dev: update biome schema and disable assist/source/organizeImports

also increase the default container width

.github/CODEOWNERS

@@ -0,0 +1,2 @@
+# Everything needs to be reviewed by Hank
+*   @henrygd

.github/DISCUSSION_TEMPLATE/ideas.yml

@@ -0,0 +1,19 @@
+body:
+  - type: dropdown
+    id: component
+    attributes:
+      label: Component
+      description: Which part of Beszel is this about?
+      options:
+        - Hub
+        - Agent
+        - Hub & Agent
+      default: 0
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Description
+      description: Please describe in detail what you want to share.
+    validations:
+      required: true

.github/DISCUSSION_TEMPLATE/support.yml

@@ -1,19 +1,54 @@
 body:
-  - type: markdown
+  - type: checkboxes
+    id: terms
     attributes:
-      value: |
-        ### Before opening a discussion:
+      label: Welcome!
+      description: |
+        Thank you for reaching out to the Beszel community for support! To help us assist you better, please make sure to review the following points before submitting your request:
 
-        - Check the [common issues guide](https://beszel.dev/guide/common-issues).
-        - Search existing [issues](https://github.com/henrygd/beszel/issues) and [discussions](https://github.com/henrygd/beszel/discussions) (including closed).
+        Please note:
+        - For translation-related issues or requests, please use the [Crowdin project](https://crowdin.com/project/beszel).
+        **- Please do not submit support reqeusts that are specific to ZFS. We plan to add integration with ZFS utilities in the near future.**
+
+      options:
+      - label: I have read the [Documentation](https://beszel.dev/guide/getting-started)
+        required: true
+      - label: I have checked the [Common Issues Guide](https://beszel.dev/guide/common-issues) and my problem was not mentioned there.
+        required: true
+      - label: I have searched open and closed issues and discussions and my problem was not mentioned before.
+        required: true
+      - label: I have verified I am using the latest version available. You can check the latest release [here](https://github.com/henrygd/beszel/releases).
+        required: true
+
+  - type: dropdown
+    id: component
+    attributes:
+      label: Component
+      description: Which part of Beszel is this about?
+      options:
+        - Hub
+        - Agent
+        - Hub & Agent
+    default: 0
+    validations:
+      required: true
 
   - type: textarea
     id: description
     attributes:
-      label: Description
-      description: A clear and concise description of the issue or question. If applicable, add screenshots to help explain your problem.
+      label: Problem Description
+      description: |
+        How to write a good bug report?
+
+        - Respect the issue template as much as possible.
+        - The title should be short and descriptive.
+        - Explain the conditions which led you to report this issue: the context.
+        - The context should lead to something, a problem that you’re facing.
+        - Remain clear and concise.
+        - Format your messages to help the reader focus on what matters and understand the structure of your message, use [Markdown syntax](https://help.github.com/articles/github-flavored-markdown)
     validations:
       required: true
+
   - type: input
     id: system
     attributes:
@@ -21,13 +56,15 @@ body:
       placeholder: linux/amd64 (agent), freebsd/arm64 (hub)
     validations:
       required: true
-  - type: input
-    id: version
-    attributes:
-      label: Beszel version
-      placeholder: 0.9.1
-    validations:
-      required: true
+  
+#  - type: input
+#    id: version
+#    attributes:
+#      label: Beszel version
+#      placeholder: 0.9.1
+#    validations:
+#      required: true
+
   - type: dropdown
     id: install-method
     attributes:
@@ -41,18 +78,21 @@ body:
         - Other (please describe above)
     validations:
       required: true
+  
   - type: textarea
     id: config
     attributes:
       label: Configuration
       description: Please provide any relevant service configuration
       render: yaml
+
   - type: textarea
     id: hub-logs
     attributes:
       label: Hub Logs
       description: Check the logs page in PocketBase (`/_/#/logs`) for relevant errors (copy JSON).
       render: json
+
   - type: textarea
     id: agent-logs
     attributes:

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -1,8 +1,30 @@
 name: 🐛 Bug report
-description: Report a new bug or issue.
+description: Use this template to report a bug or issue.
 title: '[Bug]: '
-labels: ['bug', "needs confirmation"]
+labels: ['bug']
 body:
+  - type: checkboxes
+    attributes:
+      label: Welcome!
+      description: |
+        The issue tracker is for reporting bugs and feature requests only. For end-user related support questions, please use the **[GitHub Discussions](https://github.com/henrygd/beszel/discussions/new?category=support)** instead
+
+        Please note:
+        - For translation-related issues or requests, please use the [Crowdin project](https://crowdin.com/project/beszel).
+        - To request a change or feature, use the [feature request form](https://github.com/henrygd/beszel/issues/new?template=feature_request.yml).
+        - Any issues that can be resolved by consulting the documentation or by reviewing existing open or closed issues will be closed.
+        **- Please do not submit bugs that are specific to ZFS. We plan to add integration with ZFS utilities in the near future.**
+
+      options:
+      - label: I have read the [Documentation](https://beszel.dev/guide/getting-started)
+        required: true
+      - label: I have checked the [Common Issues Guide](https://beszel.dev/guide/common-issues) and my problem was not mentioned there.
+        required: true
+      - label: I have searched open and closed issues and my problem was not mentioned before.
+        required: true
+      - label: I have verified I am using the latest version available. You can check the latest release [here](https://github.com/henrygd/beszel/releases).
+        required: true
+
   - type: dropdown
     id: component
     attributes:
@@ -12,81 +34,53 @@ body:
         - Hub
         - Agent
         - Hub & Agent
+      default: 0
     validations:
       required: true
-  - type: markdown
-    attributes:
-      value: |
-        ### Thanks for taking the time to fill out this bug report!
 
-        - For more general support, please [start a support thread](https://github.com/henrygd/beszel/discussions/new?category=support).
-        - To request a change or feature, use the [feature request form](https://github.com/henrygd/beszel/issues/new?template=feature_request.yml).
-        - Please do not submit bugs that are specific to ZFS. We plan to add integration with ZFS utilities in the near future.
-
-        ### Before submitting a bug report:
-
-        - Check the [common issues guide](https://beszel.dev/guide/common-issues).
-        - Search existing [issues](https://github.com/henrygd/beszel/issues) and [discussions](https://github.com/henrygd/beszel/discussions) (including closed).
   - type: textarea
     id: description
     attributes:
-      label: Description
-      description: Explain the issue you experienced clearly and concisely.
-      placeholder: I went to the coffee pot and it was empty.
+      label: Problem Description
+      description: |
+        How to write a good bug report?
+
+        - Respect the issue template as much as possible.
+        - The title should be short and descriptive.
+        - Explain the conditions which led you to report this issue: the context.
+        - The context should lead to something, a problem that you’re facing.
+        - Remain clear and concise.
+        - Format your messages to help the reader focus on what matters and understand the structure of your message, use [Markdown syntax](https://help.github.com/articles/github-flavored-markdown)
     validations:
       required: true
+
   - type: textarea
     id: expected-behavior
     attributes:
       label: Expected Behavior
-      description: In a perfect world, what should have happened?
+      description: |
+        In a perfect world, what should have happened?
+        **Important:** Be specific. Vague descriptions like "it should work" are not helpful.
       placeholder: When I got to the coffee pot, it should have been full.
     validations:
       required: true
+
   - type: textarea
     id: steps-to-reproduce
     attributes:
       label: Steps to Reproduce
-      description: Describe how to reproduce the issue in repeatable steps.
+      description: |
+        Provide detailed, numbered steps that someone else can follow to reproduce the issue.
+        **Important:** Vague descriptions like "it doesn't work" or "it's broken" will result in the issue being closed.
+        Include specific actions, URLs, button clicks, and any relevant data or configuration.
       placeholder: |
         1. Go to the coffee pot.
         2. Make more coffee.
         3. Pour it into a cup.
+        4. Observe that the cup is empty instead of full.
     validations:
       required: true
-  - type: dropdown
-    id: category
-    attributes:
-      label: Category
-      description: Which category does this relate to most?
-      options:
-        - Metrics
-        - Charts & Visualization
-        - Settings & Configuration
-        - Notifications & Alerts
-        - Authentication
-        - Installation
-        - Performance
-        - UI / UX
-        - Other
-    validations:
-      required: true
-  - type: dropdown
-    id: metrics
-    attributes:
-      label: Affected Metrics
-      description: If applicable, which specific metric does this relate to most?
-      options:
-        - CPU
-        - Memory
-        - Storage
-        - Network
-        - Containers
-        - GPU
-        - Sensors
-        - Other
-    validations:
-      required: true
+
   - type: input
     id: system
     attributes:
@@ -94,6 +88,7 @@ body:
       placeholder: linux/amd64 (agent), freebsd/arm64 (hub)
     validations:
       required: true
+  
   - type: input
     id: version
     attributes:
@@ -101,6 +96,7 @@ body:
       placeholder: 0.9.1
     validations:
       required: true
+  
   - type: dropdown
     id: install-method
     attributes:
@@ -114,18 +110,21 @@ body:
         - Other (please describe above)
     validations:
       required: true
+  
   - type: textarea
     id: config
     attributes:
       label: Configuration
       description: Please provide any relevant service configuration
       render: yaml
+  
   - type: textarea
     id: hub-logs
     attributes:
       label: Hub Logs
       description: Check the logs page in PocketBase (`/_/#/logs`) for relevant errors (copy JSON).
       render: json
+  
   - type: textarea
     id: agent-logs
     attributes:

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,8 @@
 blank_issues_enabled: false
 contact_links:
+  - name: 🗣️ Translations
+    url: https://crowdin.com/project/beszel
+    about: Please report translation issues and request new translations here. 
   - name: 💬 Support and questions
     url: https://github.com/henrygd/beszel/discussions
     about: Ask and answer questions here.

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -1,8 +1,25 @@
 name: 🚀 Feature request
 description: Request a new feature or change.
 title: "[Feature]: "
-labels: ["enhancement", "needs review"]
+labels: ["enhancement"]
 body:
+  - type: checkboxes
+    attributes:
+      label: Welcome!
+      description: |
+        The issue tracker is for reporting bugs and feature requests only. For end-user related support questions, please use the **[GitHub Discussions](https://github.com/henrygd/beszel/discussions)** instead
+
+        Please note:
+        - For **Bug reports**, use the [Bug Form](https://github.com/henrygd/beszel/issues/new?template=bug_report.yml).
+        - Any requests for new translations should be requested within the [crowdin project](https://crowdin.com/project/beszel).
+        - Create one issue per feature request. This helps us keep track of requests and prioritize them accordingly.
+
+      options:
+      - label: I have searched open and closed feature requests to make sure this or similar feature request does not already exist.
+        required: true
+      - label: This is a feature request, not a bug report or support question.
+        required: true
+
   - type: dropdown
     id: component
     attributes:
@@ -12,65 +29,29 @@ body:
         - Hub
         - Agent
         - Hub & Agent
+      default: 0
     validations:
       required: true
-  - type: markdown
-    attributes:
-      value: Before submitting, please search existing [issues](https://github.com/henrygd/beszel/issues) and [discussions](https://github.com/henrygd/beszel/discussions) (including closed).
+
   - type: textarea
+    id: description
     attributes:
-      label: Describe the feature you would like to see
+      label: Description
+      description: |
+        Describe the solution or feature you'd like. Explain what problem this solves or what value it adds.
+        **Important:** Be specific and detailed. Vague requests like "make it better" will be closed.
+      placeholder: |
+        Example:
+        - What is the feature?
+        - What problem does it solve?
+        - How should it work?
     validations:
       required: true
+
   - type: textarea
     id: motivation
     attributes:
       label: Motivation / Use Case
       description: Why do you want this feature? What problem does it solve?
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: Describe how you would like to see this feature implemented
-    validations:
-      required: true
-  - type: textarea
-    id: logs
-    attributes:
-      label: Screenshots
-      description: Please attach any relevant screenshots, such as images from your current solution or similar implementations.
-    validations:
-      required: false
-  - type: dropdown
-    id: category
-    attributes:
-      label: Category
-      description: Which category does this relate to most?
-      options:
-        - Metrics
-        - Charts & Visualization
-        - Settings & Configuration
-        - Notifications & Alerts
-        - Authentication
-        - Installation
-        - Performance
-        - UI / UX
-        - Other
-    validations:
-      required: true
-  - type: dropdown
-    id: metrics
-    attributes:
-      label: Affected Metrics
-      description: If applicable, which specific metric does this relate to most?
-      options:
-        - CPU
-        - Memory
-        - Storage
-        - Network
-        - Containers
-        - GPU
-        - Sensors
-        - Other
     validations:
       required: true

.github/workflows/docker-images.yml

@@ -10,6 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
+      max-parallel: 5
       matrix:
         include:
           # henrygd/beszel
@@ -24,20 +25,18 @@ jobs:
               type=semver,pattern={{major}}.{{minor}}
               type=semver,pattern={{major}}
               type=raw,value={{sha}},enable=${{ github.ref_type != 'tag' }}
-
-          # henrygd/beszel-agent
+            
+          # henrygd/beszel-agent:alpine
           - image: henrygd/beszel-agent
-            dockerfile: ./internal/dockerfile_agent
+            dockerfile: ./internal/dockerfile_agent_alpine
             registry: docker.io
             username_secret: DOCKERHUB_USERNAME
             password_secret: DOCKERHUB_TOKEN
             tags: |
-              type=raw,value=edge
-              type=raw,value=latest
-              type=semver,pattern={{version}}
-              type=semver,pattern={{major}}.{{minor}}
-              type=semver,pattern={{major}}
-              type=raw,value={{sha}},enable=${{ github.ref_type != 'tag' }}
+              type=raw,value=alpine
+              type=semver,pattern={{version}}-alpine
+              type=semver,pattern={{major}}.{{minor}}-alpine
+              type=semver,pattern={{major}}-alpine
 
           # henrygd/beszel-agent-nvidia
           - image: henrygd/beszel-agent-nvidia
@@ -67,18 +66,6 @@ jobs:
               type=semver,pattern={{major}}
               type=raw,value={{sha}},enable=${{ github.ref_type != 'tag' }}
 
-          # henrygd/beszel-agent:alpine
-          - image: henrygd/beszel-agent
-            dockerfile: ./internal/dockerfile_agent_alpine
-            registry: docker.io
-            username_secret: DOCKERHUB_USERNAME
-            password_secret: DOCKERHUB_TOKEN
-            tags: |
-              type=raw,value=alpine
-              type=semver,pattern={{version}}-alpine
-              type=semver,pattern={{major}}.{{minor}}-alpine
-              type=semver,pattern={{major}}-alpine
-
           # ghcr.io/henrygd/beszel
           - image: ghcr.io/${{ github.repository }}/beszel
             dockerfile: ./internal/dockerfile_hub
@@ -146,6 +133,19 @@ jobs:
               type=semver,pattern={{major}}.{{minor}}-alpine
               type=semver,pattern={{major}}-alpine
 
+          # henrygd/beszel-agent (keep at bottom so it gets built after :alpine and gets the latest tag)
+          - image: henrygd/beszel-agent
+            dockerfile: ./internal/dockerfile_agent
+            registry: docker.io
+            username_secret: DOCKERHUB_USERNAME
+            password_secret: DOCKERHUB_TOKEN
+            tags: |
+              type=raw,value=edge
+              type=semver,pattern={{version}}
+              type=semver,pattern={{major}}.{{minor}}
+              type=semver,pattern={{major}}
+              type=raw,value={{sha}},enable=${{ github.ref_type != 'tag' }}
+
     permissions:
       contents: read
       packages: write

.github/workflows/inactivity-actions.yml

@@ -6,16 +6,30 @@ on:
   workflow_dispatch:
 
 permissions:
+  actions: write
   issues: write
   pull-requests: write
 
 jobs:
+  lock-inactive:
+    name: Lock Inactive Issues
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: klaasnicolaas/action-inactivity-lock@v1.1.3
+        id: lock
+        with:
+          days-inactive-issues: 14
+          lock-reason-issues: ""
+          # Action can not skip PRs, set it to 100 years to cover it.
+          days-inactive-prs: 36524
+          lock-reason-prs: ""
+
   close-stale:
     name: Close Stale Issues
     runs-on: ubuntu-24.04
     steps:
       - name: Close Stale Issues
-        uses: actions/stale@v9
+        uses: actions/stale@v10
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
@@ -32,12 +46,19 @@ jobs:
           # Timing
           days-before-issue-stale: 14
           days-before-issue-close: 7
+          # Action can not skip PRs, set it to 100 years to cover it.
+          days-before-pr-stale: 36524
+
+          # Max issues to process before early exit. Next run resumes from cache. GH API limit: 5000.
+          operations-per-run: 1500
 
           # Labels
           stale-issue-label: 'stale'
           remove-stale-when-updated: true
-          only-issue-labels: 'awaiting-requester'
+          any-of-labels: 'awaiting-requester'
+          exempt-issue-labels: 'enhancement' 
 
           # Exemptions
           exempt-assignees: true
-          exempt-milestones: true
+
+          exempt-milestones: true

.github/workflows/label-from-dropdown.yml

@@ -1,82 +0,0 @@
-name: Label issues from dropdowns
-
-on:
-  issues:
-    types: [opened]
-
-jobs:
-  label_from_dropdown:
-    runs-on: ubuntu-latest
-    permissions:
-      issues: write
-    steps:
-      - name: Apply labels based on dropdown choices
-        uses: actions/github-script@v7
-        with:
-          script: |
-
-            const issueNumber = context.issue.number;
-            const owner = context.repo.owner;
-            const repo = context.repo.repo;
-
-            // Get the issue body
-            const body = context.payload.issue.body;
-
-            // Helper to find dropdown value in the body (assuming markdown format)
-            function extractSectionValue(heading) {
-              const regex = new RegExp(`### ${heading}\\s+([\\s\\S]*?)(?:\\n###|$)`, 'i');
-              const match = body.match(regex);
-              if (match) {
-                // Get the first non-empty line after the heading
-                const lines = match[1].split('\n').map(l => l.trim()).filter(Boolean);
-                return lines[0] || null;
-              }
-              return null;
-            }
-
-            // Extract dropdown selections
-            const category = extractSectionValue('Category');
-            const metrics = extractSectionValue('Affected Metrics');
-            const component = extractSectionValue('Component');
-
-            // Build labels to add
-            let labelsToAdd = [];
-            if (category) labelsToAdd.push(category);
-            if (metrics) labelsToAdd.push(metrics);
-            if (component) labelsToAdd.push(component);
-
-            // Get existing labels in the repo
-            const { data: existingLabels } = await github.rest.issues.listLabelsForRepo({
-              owner,
-              repo,
-              per_page: 100
-            });
-            const existingLabelNames = existingLabels.map(l => l.name);
-
-            // Find labels that need to be created
-            const labelsToCreate = labelsToAdd.filter(label => !existingLabelNames.includes(label));
-
-            // Create missing labels (with a default color)
-            for (const label of labelsToCreate) {
-              try {
-                await github.rest.issues.createLabel({
-                  owner,
-                  repo,
-                  name: label,
-                  color: 'ededed' // light gray, you can pick any hex color
-                });
-              } catch (e) {
-                // Ignore if label already exists (race condition), otherwise rethrow
-                if (!e || e.status !== 422) throw e;
-              }
-            }
-
-            // Now apply all labels (they all exist now)
-            if (labelsToAdd.length > 0) {
-              await github.rest.issues.addLabels({
-                owner,
-                repo,
-                issue_number: issueNumber,
-                labels: labelsToAdd
-              });
-            } 

.gitignore

@@ -10,6 +10,7 @@ dist
 *.exe
 internal/cmd/hub/hub
 internal/cmd/agent/agent
+agent.test
 node_modules
 build
 *timestamp*

.goreleaser.yml

@@ -16,10 +16,21 @@ builds:
     goos:
       - linux
       - darwin
+      - windows
+      - freebsd
     goarch:
       - amd64
       - arm64
       - arm
+    ignore:
+      - goos: windows
+        goarch: arm64
+      - goos: windows
+        goarch: arm
+      - goos: freebsd
+        goarch: arm64
+      - goos: freebsd
+        goarch: arm
 
   - id: beszel-agent
     binary: beszel-agent
@@ -65,6 +76,18 @@ builds:
       - goos: windows
         goarch: riscv64
 
+  - id: beszel-agent-linux-amd64-glibc
+    binary: beszel-agent
+    main: internal/cmd/agent/agent.go
+    env:
+      - CGO_ENABLED=0
+    flags:
+      - -tags=glibc
+    goos:
+      - linux
+    goarch:
+      - amd64
+
 archives:
   - id: beszel-agent
     formats: [tar.gz]
@@ -78,6 +101,15 @@ archives:
       - goos: windows
         formats: [zip]
 
+  - id: beszel-agent-linux-amd64-glibc
+    formats: [tar.gz]
+    ids:
+      - beszel-agent-linux-amd64-glibc
+    name_template: >-
+      {{ .Binary }}_
+      {{- .Os }}_
+      {{- .Arch }}_glibc
+
   - id: beszel
     formats: [tar.gz]
     ids:
@@ -86,6 +118,9 @@ archives:
       {{ .Binary }}_
       {{- .Os }}_
       {{- .Arch }}
+    format_overrides:
+      - goos: windows
+        formats: [zip]
 
 nfpms:
   - id: beszel-agent
@@ -123,9 +158,7 @@ nfpms:
         - debconf
       scripts:
         templates: ./supplemental/debian/templates
-        # Currently broken due to a bug in goreleaser
-        # https://github.com/goreleaser/goreleaser/issues/5487
-        #config: ./supplemental/debian/config.sh
+        config: ./supplemental/debian/config.sh
 
 scoops:
   - ids: [beszel-agent]

Makefile

@@ -3,6 +3,40 @@ OS ?= $(shell go env GOOS)
 ARCH ?= $(shell go env GOARCH)
 # Skip building the web UI if true
 SKIP_WEB ?= false
+# Controls NVML/glibc agent build tag behavior:
+# - auto (default): enable on linux/amd64 glibc hosts
+# - true: always enable
+# - false: always disable
+NVML ?= auto
+
+# Detect glibc host for local linux/amd64 builds.
+HOST_GLIBC := $(shell \
+	if [ "$(OS)" = "linux" ] && [ "$(ARCH)" = "amd64" ]; then \
+		for p in /lib64/ld-linux-x86-64.so.2 /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 /lib/ld-linux-x86-64.so.2; do \
+			[ -e "$$p" ] && { echo true; exit 0; }; \
+		done; \
+		if command -v ldd >/dev/null 2>&1; then \
+			if ldd --version 2>&1 | tr '[:upper:]' '[:lower:]' | awk '/gnu libc|glibc/{found=1} END{exit !found}'; then \
+				echo true; \
+			else \
+				echo false; \
+			fi; \
+		else \
+			echo false; \
+		fi; \
+	else \
+		echo false; \
+	fi)
+
+# Enable glibc build tag for NVML on supported Linux builds.
+AGENT_GO_TAGS :=
+ifeq ($(NVML),true)
+AGENT_GO_TAGS := -tags glibc
+else ifeq ($(NVML),auto)
+ifeq ($(HOST_GLIBC),true)
+AGENT_GO_TAGS := -tags glibc
+endif
+endif
 
 # Set executable extension based on target OS
 EXE_EXT := $(if $(filter windows,$(OS)),.exe,)
@@ -17,7 +51,6 @@ clean:
 lint:
 	golangci-lint run
 
-test: export GOEXPERIMENT=synctest
 test:
 	go test -tags=testing ./...
 
@@ -54,7 +87,7 @@ fetch-smartctl-conditional:
 
 # Update build-agent to include conditional .NET build
 build-agent: tidy build-dotnet-conditional fetch-smartctl-conditional
-	GOOS=$(OS) GOARCH=$(ARCH) go build -o ./build/beszel-agent_$(OS)_$(ARCH)$(EXE_EXT) -ldflags "-w -s" ./internal/cmd/agent
+	GOOS=$(OS) GOARCH=$(ARCH) go build $(AGENT_GO_TAGS) -o ./build/beszel-agent_$(OS)_$(ARCH)$(EXE_EXT) -ldflags "-w -s" ./internal/cmd/agent
 
 build-hub: tidy $(if $(filter false,$(SKIP_WEB)),build-web-ui)
 	GOOS=$(OS) GOARCH=$(ARCH) go build -o ./build/beszel_$(OS)_$(ARCH)$(EXE_EXT) -ldflags "-w -s" ./internal/cmd/hub
@@ -90,9 +123,9 @@ dev-hub:
 
 dev-agent:
 	@if command -v entr >/dev/null 2>&1; then \
-		find ./internal/cmd/agent/*.go ./agent/*.go | entr -r go run github.com/henrygd/beszel/internal/cmd/agent; \
+		find ./internal/cmd/agent/*.go ./agent/*.go | entr -r go run $(AGENT_GO_TAGS) github.com/henrygd/beszel/internal/cmd/agent; \
 	else \
-		go run github.com/henrygd/beszel/internal/cmd/agent; \
+		go run $(AGENT_GO_TAGS) github.com/henrygd/beszel/internal/cmd/agent; \
 	fi
 	
 build-dotnet:

agent/agent.go

@@ -5,19 +5,17 @@
 package agent
 
 import (
-	"crypto/sha256"
-	"encoding/hex"
 	"log/slog"
 	"os"
-	"path/filepath"
 	"strings"
 	"sync"
+	"time"
 
 	"github.com/gliderlabs/ssh"
 	"github.com/henrygd/beszel"
 	"github.com/henrygd/beszel/agent/deltatracker"
+	"github.com/henrygd/beszel/internal/common"
 	"github.com/henrygd/beszel/internal/entities/system"
-	"github.com/shirou/gopsutil/v4/host"
 	gossh "golang.org/x/crypto/ssh"
 )
 
@@ -29,12 +27,15 @@ type Agent struct {
 	fsNames                   []string                                              // List of filesystem device names being monitored
 	fsStats                   map[string]*system.FsStats                            // Keeps track of disk stats for each filesystem
 	diskPrev                  map[uint16]map[string]prevDisk                        // Previous disk I/O counters per cache interval
+	diskUsageCacheDuration    time.Duration                                         // How long to cache disk usage (to avoid waking sleeping disks)
+	lastDiskUsageUpdate       time.Time                                             // Last time disk usage was collected
 	netInterfaces             map[string]struct{}                                   // Stores all valid network interfaces
 	netIoStats                map[uint16]system.NetIoStats                          // Keeps track of bandwidth usage per cache interval
 	netInterfaceDeltaTrackers map[uint16]*deltatracker.DeltaTracker[string, uint64] // Per-cache-time NIC delta trackers
 	dockerManager             *dockerManager                                        // Manages Docker API requests
 	sensorConfig              *SensorConfig                                         // Sensors config
-	systemInfo                system.Info                                           // Host system info
+	systemInfo                system.Info                                           // Host system info (dynamic)
+	systemDetails             system.Details                                        // Host system details (static, once-per-connection)
 	gpuManager                *GPUManager                                           // Manages GPU data
 	cache                     *systemDataCache                                      // Cache for system stats based on cache time
 	connectionManager         *ConnectionManager                                    // Channel to signal connection events
@@ -60,7 +61,7 @@ func NewAgent(dataDir ...string) (agent *Agent, err error) {
 	agent.netIoStats = make(map[uint16]system.NetIoStats)
 	agent.netInterfaceDeltaTrackers = make(map[uint16]*deltatracker.DeltaTracker[string, uint64])
 
-	agent.dataDir, err = getDataDir(dataDir...)
+	agent.dataDir, err = GetDataDir(dataDir...)
 	if err != nil {
 		slog.Warn("Data directory not found")
 	} else {
@@ -69,6 +70,17 @@ func NewAgent(dataDir ...string) (agent *Agent, err error) {
 
 	agent.memCalc, _ = GetEnv("MEM_CALC")
 	agent.sensorConfig = agent.newSensorConfig()
+
+	// Parse disk usage cache duration (e.g., "15m", "1h") to avoid waking sleeping disks
+	if diskUsageCache, exists := GetEnv("DISK_USAGE_CACHE"); exists {
+		if duration, err := time.ParseDuration(diskUsageCache); err == nil {
+			agent.diskUsageCacheDuration = duration
+			slog.Info("DISK_USAGE_CACHE", "duration", duration)
+		} else {
+			slog.Warn("Invalid DISK_USAGE_CACHE", "err", err)
+		}
+	}
+
 	// Set up slog with a log level determined by the LOG_LEVEL env var
 	if logLevelStr, exists := GetEnv("LOG_LEVEL"); exists {
 		switch strings.ToLower(logLevelStr) {
@@ -84,8 +96,21 @@ func NewAgent(dataDir ...string) (agent *Agent, err error) {
 
 	slog.Debug(beszel.Version)
 
+	// initialize docker manager
+	agent.dockerManager = newDockerManager()
+
 	// initialize system info
-	agent.initializeSystemInfo()
+	agent.refreshSystemDetails()
+
+	// SMART_INTERVAL env var to update smart data at this interval
+	if smartIntervalEnv, exists := GetEnv("SMART_INTERVAL"); exists {
+		if duration, err := time.ParseDuration(smartIntervalEnv); err == nil && duration > 0 {
+			agent.systemDetails.SmartInterval = duration
+			slog.Info("SMART_INTERVAL", "duration", duration)
+		} else {
+			slog.Warn("Invalid SMART_INTERVAL", "err", err)
+		}
+	}
 
 	// initialize connection manager
 	agent.connectionManager = newConnectionManager(agent)
@@ -99,9 +124,6 @@ func NewAgent(dataDir ...string) (agent *Agent, err error) {
 	// initialize net io stats
 	agent.initializeNetIoStats()
 
-	// initialize docker manager
-	agent.dockerManager = newDockerManager(agent)
-
 	agent.systemdManager, err = newSystemdManager()
 	if err != nil {
 		slog.Debug("Systemd", "err", err)
@@ -120,7 +142,7 @@ func NewAgent(dataDir ...string) (agent *Agent, err error) {
 
 	// if debugging, print stats
 	if agent.debug {
-		slog.Debug("Stats", "data", agent.gatherStats(0))
+		slog.Debug("Stats", "data", agent.gatherStats(common.DataRequestOptions{CacheTimeMs: 60_000, IncludeDetails: true}))
 	}
 
 	return agent, nil
@@ -135,10 +157,11 @@ func GetEnv(key string) (value string, exists bool) {
 	return os.LookupEnv(key)
 }
 
-func (a *Agent) gatherStats(cacheTimeMs uint16) *system.CombinedData {
+func (a *Agent) gatherStats(options common.DataRequestOptions) *system.CombinedData {
 	a.Lock()
 	defer a.Unlock()
 
+	cacheTimeMs := options.CacheTimeMs
 	data, isCached := a.cache.Get(cacheTimeMs)
 	if isCached {
 		slog.Debug("Cached data", "cacheTimeMs", cacheTimeMs)
@@ -149,6 +172,12 @@ func (a *Agent) gatherStats(cacheTimeMs uint16) *system.CombinedData {
 		Stats: a.getSystemStats(cacheTimeMs),
 		Info:  a.systemInfo,
 	}
+
+	// Include static system details only when requested
+	if options.IncludeDetails {
+		data.Details = &a.systemDetails
+	}
+
 	// slog.Info("System data", "data", data, "cacheTimeMs", cacheTimeMs)
 
 	if a.dockerManager != nil {
@@ -161,8 +190,15 @@ func (a *Agent) gatherStats(cacheTimeMs uint16) *system.CombinedData {
 	}
 
 	// skip updating systemd services if cache time is not the default 60sec interval
-	if a.systemdManager != nil && cacheTimeMs == 60_000 && a.systemdManager.hasFreshStats {
-		data.SystemdServices = a.systemdManager.getServiceStats(nil, false)
+	if a.systemdManager != nil && cacheTimeMs == 60_000 {
+		totalCount := uint16(a.systemdManager.getServiceStatsCount())
+		if totalCount > 0 {
+			numFailed := a.systemdManager.getFailedServiceCount()
+			data.Info.Services = []uint16{totalCount, numFailed}
+		}
+		if a.systemdManager.hasFreshStats {
+			data.SystemdServices = a.systemdManager.getServiceStats(nil, false)
+		}
 	}
 
 	data.Stats.ExtraFs = make(map[string]*system.FsStats)
@@ -188,37 +224,12 @@ func (a *Agent) gatherStats(cacheTimeMs uint16) *system.CombinedData {
 	return data
 }
 
-// StartAgent initializes and starts the agent with optional WebSocket connection
+// Start initializes and starts the agent with optional WebSocket connection
 func (a *Agent) Start(serverOptions ServerOptions) error {
 	a.keys = serverOptions.Keys
 	return a.connectionManager.Start(serverOptions)
 }
 
 func (a *Agent) getFingerprint() string {
-	// first look for a fingerprint in the data directory
-	if a.dataDir != "" {
-		if fp, err := os.ReadFile(filepath.Join(a.dataDir, "fingerprint")); err == nil {
-			return string(fp)
-		}
-	}
-
-	// if no fingerprint is found, generate one
-	fingerprint, err := host.HostID()
-	if err != nil || fingerprint == "" {
-		fingerprint = a.systemInfo.Hostname + a.systemInfo.CpuModel
-	}
-
-	// hash fingerprint
-	sum := sha256.Sum256([]byte(fingerprint))
-	fingerprint = hex.EncodeToString(sum[:24])
-
-	// save fingerprint to data directory
-	if a.dataDir != "" {
-		err = os.WriteFile(filepath.Join(a.dataDir, "fingerprint"), []byte(fingerprint), 0644)
-		if err != nil {
-			slog.Warn("Failed to save fingerprint", "err", err)
-		}
-	}
-
-	return fingerprint
+	return GetFingerprint(a.dataDir, a.systemDetails.Hostname, a.systemDetails.CpuModel)
 }

agent/agent_cache_test.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package agent
 
@@ -22,7 +21,7 @@ func createTestCacheData() *system.CombinedData {
 			DiskTotal: 100000,
 		},
 		Info: system.Info{
-			Hostname: "test-host",
+			AgentVersion: "0.12.0",
 		},
 		Containers: []*container.Stats{
 			{
@@ -128,7 +127,7 @@ func TestCacheMultipleIntervals(t *testing.T) {
 				Mem: 16384,
 			},
 			Info: system.Info{
-				Hostname: "test-host-2",
+				AgentVersion: "0.12.0",
 			},
 			Containers: []*container.Stats{},
 		}
@@ -171,7 +170,7 @@ func TestCacheOverwrite(t *testing.T) {
 			Mem: 32768,
 		},
 		Info: system.Info{
-			Hostname: "updated-host",
+			AgentVersion: "0.12.0",
 		},
 		Containers: []*container.Stats{},
 	}

agent/agent_test_helpers.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package agent
 

agent/battery/battery.go

@@ -65,7 +65,7 @@ func GetBatteryStats() (batteryPercent uint8, batteryState uint8, err error) {
 			continue
 		}
 		totalCapacity += bat.Full
-		totalCharge += bat.Current
+		totalCharge += min(bat.Current, bat.Full)
 		if bat.State.Raw >= 0 {
 			batteryState = uint8(bat.State.Raw)
 		}

agent/client.go

@@ -15,9 +15,6 @@ import (
 
 	"github.com/henrygd/beszel"
 	"github.com/henrygd/beszel/internal/common"
-	"github.com/henrygd/beszel/internal/entities/smart"
-	"github.com/henrygd/beszel/internal/entities/system"
-	"github.com/henrygd/beszel/internal/entities/systemd"
 
 	"github.com/fxamacker/cbor/v2"
 	"github.com/lxzan/gws"
@@ -201,7 +198,7 @@ func (client *WebSocketClient) handleAuthChallenge(msg *common.HubRequest[cbor.R
 
 	if authRequest.NeedSysInfo {
 		response.Name, _ = GetEnv("SYSTEM_NAME")
-		response.Hostname = client.agent.systemInfo.Hostname
+		response.Hostname = client.agent.systemDetails.Hostname
 		serverAddr := client.agent.connectionManager.serverOptions.Addr
 		_, response.Port, _ = net.SplitHostPort(serverAddr)
 	}
@@ -259,40 +256,16 @@ func (client *WebSocketClient) sendMessage(data any) error {
 	return err
 }
 
-// sendResponse sends a response with optional request ID for the new protocol
+// sendResponse sends a response with optional request ID.
+// For ID-based requests, we must populate legacy typed fields for backward
+// compatibility with older hubs (<= 0.17) that don't read the generic Data field.
 func (client *WebSocketClient) sendResponse(data any, requestID *uint32) error {
 	if requestID != nil {
-		// New format with ID - use typed fields
-		response := common.AgentResponse{
-			Id: requestID,
-		}
-
-		// Set the appropriate typed field based on data type
-		switch v := data.(type) {
-		case *system.CombinedData:
-			response.SystemData = v
-		case *common.FingerprintResponse:
-			response.Fingerprint = v
-		case string:
-			response.String = &v
-		case map[string]smart.SmartData:
-			response.SmartData = v
-		case systemd.ServiceDetails:
-			response.ServiceInfo = v
-		// case []byte:
-		// 	response.RawBytes = v
-		// case string:
-		// 	response.RawBytes = []byte(v)
-		default:
-			// For any other type, convert to error
-			response.Error = fmt.Sprintf("unsupported response type: %T", data)
-		}
-
+		response := newAgentResponse(data, requestID)
 		return client.sendMessage(response)
-	} else {
-		// Legacy format - send data directly
-		return client.sendMessage(data)
 	}
+	// Legacy format - send data directly
+	return client.sendMessage(data)
 }
 
 // getUserAgent returns one of two User-Agent strings based on current time.

agent/client_test.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package agent
 

agent/connection_manager.go

@@ -1,9 +1,9 @@
 package agent
 
 import (
+	"context"
 	"errors"
 	"log/slog"
-	"os"
 	"os/signal"
 	"syscall"
 	"time"
@@ -91,8 +91,8 @@ func (c *ConnectionManager) Start(serverOptions ServerOptions) error {
 	c.eventChan = make(chan ConnectionEvent, 1)
 
 	// signal handling for shutdown
-	sigChan := make(chan os.Signal, 1)
-	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
+	sigCtx, stopSignals := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
+	defer stopSignals()
 
 	c.startWsTicker()
 	c.connect()
@@ -109,8 +109,8 @@ func (c *ConnectionManager) Start(serverOptions ServerOptions) error {
 			_ = c.startWebSocketConnection()
 		case <-healthTicker:
 			_ = health.Update()
-		case <-sigChan:
-			slog.Info("Shutting down")
+		case <-sigCtx.Done():
+			slog.Info("Shutting down", "cause", context.Cause(sigCtx))
 			_ = c.agent.StopServer()
 			c.closeWebSocket()
 			return health.CleanUp()

agent/connection_manager_test.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package agent
 

agent/cpu.go

@@ -89,10 +89,7 @@ func getPerCoreCpuUsage(cacheTimeMs uint16) (system.Uint8Slice, error) {
 	lastTimes := lastPerCoreCpuTimes[cacheTimeMs]
 
 	// Limit to the number of cores available in both samples
-	length := len(perCoreTimes)
-	if len(lastTimes) < length {
-		length = len(lastTimes)
-	}
+	length := min(len(lastTimes), len(perCoreTimes))
 
 	usage := make([]uint8, length)
 	for i := 0; i < length; i++ {

agent/data_dir.go

@@ -8,10 +8,10 @@ import (
 	"runtime"
 )
 
-// getDataDir returns the path to the data directory for the agent and an error
+// GetDataDir returns the path to the data directory for the agent and an error
 // if the directory is not valid. Attempts to find the optimal data directory if
 // no data directories are provided.
-func getDataDir(dataDirs ...string) (string, error) {
+func GetDataDir(dataDirs ...string) (string, error) {
 	if len(dataDirs) > 0 {
 		return testDataDirs(dataDirs)
 	}

agent/data_dir_test.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package agent
 
@@ -17,7 +16,7 @@ func TestGetDataDir(t *testing.T) {
 	// Test with explicit dataDir parameter
 	t.Run("explicit data dir", func(t *testing.T) {
 		tempDir := t.TempDir()
-		result, err := getDataDir(tempDir)
+		result, err := GetDataDir(tempDir)
 		require.NoError(t, err)
 		assert.Equal(t, tempDir, result)
 	})
@@ -26,7 +25,7 @@ func TestGetDataDir(t *testing.T) {
 	t.Run("explicit data dir - create new", func(t *testing.T) {
 		tempDir := t.TempDir()
 		newDir := filepath.Join(tempDir, "new-data-dir")
-		result, err := getDataDir(newDir)
+		result, err := GetDataDir(newDir)
 		require.NoError(t, err)
 		assert.Equal(t, newDir, result)
 
@@ -52,7 +51,7 @@ func TestGetDataDir(t *testing.T) {
 
 		os.Setenv("BESZEL_AGENT_DATA_DIR", tempDir)
 
-		result, err := getDataDir()
+		result, err := GetDataDir()
 		require.NoError(t, err)
 		assert.Equal(t, tempDir, result)
 	})
@@ -60,7 +59,7 @@ func TestGetDataDir(t *testing.T) {
 	// Test with invalid explicit dataDir
 	t.Run("invalid explicit data dir", func(t *testing.T) {
 		invalidPath := "/invalid/path/that/cannot/be/created"
-		_, err := getDataDir(invalidPath)
+		_, err := GetDataDir(invalidPath)
 		assert.Error(t, err)
 	})
 
@@ -79,7 +78,7 @@ func TestGetDataDir(t *testing.T) {
 
 		// This will try platform-specific defaults, which may or may not work
 		// We're mainly testing that it doesn't panic and returns some result
-		result, err := getDataDir()
+		result, err := GetDataDir()
 		// We don't assert success/failure here since it depends on system permissions
 		// Just verify we get a string result if no error
 		if err == nil {

agent/disk.go

@@ -26,6 +26,15 @@ func parseFilesystemEntry(entry string) (device, customName string) {
 	return device, customName
 }
 
+func isDockerSpecialMountpoint(mountpoint string) bool {
+	switch mountpoint {
+	case "/etc/hosts", "/etc/resolv.conf", "/etc/hostname":
+		return true
+	default:
+		return false
+	}
+}
+
 // Sets up the filesystems to monitor for disk usage and I/O.
 func (a *Agent) initializeDiskInfo() {
 	filesystem, _ := GetEnv("FILESYSTEM")
@@ -69,11 +78,15 @@ func (a *Agent) initializeDiskInfo() {
 		if _, exists := a.fsStats[key]; !exists {
 			if root {
 				slog.Info("Detected root device", "name", key)
-				// Check if root device is in /proc/diskstats, use fallback if not
+				// Check if root device is in /proc/diskstats. Do not guess a
+				// fallback device for root: that can misattribute root I/O to a
+				// different disk while usage remains tied to root mountpoint.
 				if _, ioMatch = diskIoCounters[key]; !ioMatch {
-					key, ioMatch = findIoDevice(filesystem, diskIoCounters, a.fsStats)
-					if !ioMatch {
-						slog.Info("Using I/O fallback", "device", device, "mountpoint", mountpoint, "fallback", key)
+					if matchedKey, match := findIoDevice(filesystem, diskIoCounters); match {
+						key = matchedKey
+						ioMatch = true
+					} else {
+						slog.Warn("Root I/O unmapped; set FILESYSTEM", "device", device, "mountpoint", mountpoint)
 					}
 				}
 			} else {
@@ -95,6 +108,9 @@ func (a *Agent) initializeDiskInfo() {
 		}
 	}
 
+	// Get the appropriate root mount point for this system
+	rootMountPoint := a.getRootMountPoint()
+
 	// Use FILESYSTEM env var to find root filesystem
 	if filesystem != "" {
 		for _, p := range partitions {
@@ -111,7 +127,7 @@ func (a *Agent) initializeDiskInfo() {
 
 	// Add EXTRA_FILESYSTEMS env var values to fsStats
 	if extraFilesystems, exists := GetEnv("EXTRA_FILESYSTEMS"); exists {
-		for _, fsEntry := range strings.Split(extraFilesystems, ",") {
+		for fsEntry := range strings.SplitSeq(extraFilesystems, ",") {
 			// Parse custom name from format: device__customname
 			fs, customName := parseFilesystemEntry(fsEntry)
 
@@ -138,8 +154,8 @@ func (a *Agent) initializeDiskInfo() {
 	for _, p := range partitions {
 		// fmt.Println(p.Device, p.Mountpoint)
 		// Binary root fallback or docker root fallback
-		if !hasRoot && (p.Mountpoint == "/" || (p.Mountpoint == "/etc/hosts" && strings.HasPrefix(p.Device, "/dev"))) {
-			fs, match := findIoDevice(filepath.Base(p.Device), diskIoCounters, a.fsStats)
+		if !hasRoot && (p.Mountpoint == rootMountPoint || (isDockerSpecialMountpoint(p.Mountpoint) && strings.HasPrefix(p.Device, "/dev"))) {
+			fs, match := findIoDevice(filepath.Base(p.Device), diskIoCounters)
 			if match {
 				addFsStat(fs, p.Mountpoint, true)
 				hasRoot = true
@@ -173,33 +189,26 @@ func (a *Agent) initializeDiskInfo() {
 
 	// If no root filesystem set, use fallback
 	if !hasRoot {
-		rootDevice, _ := findIoDevice(filepath.Base(filesystem), diskIoCounters, a.fsStats)
-		slog.Info("Root disk", "mountpoint", "/", "io", rootDevice)
-		a.fsStats[rootDevice] = &system.FsStats{Root: true, Mountpoint: "/"}
+		rootKey := filepath.Base(rootMountPoint)
+		if _, exists := a.fsStats[rootKey]; exists {
+			rootKey = "root"
+		}
+		slog.Warn("Root device not detected; root I/O disabled", "mountpoint", rootMountPoint)
+		a.fsStats[rootKey] = &system.FsStats{Root: true, Mountpoint: rootMountPoint}
 	}
 
 	a.initializeDiskIoStats(diskIoCounters)
 }
 
-// Returns matching device from /proc/diskstats,
-// or the device with the most reads if no match is found.
+// Returns matching device from /proc/diskstats.
 // bool is true if a match was found.
-func findIoDevice(filesystem string, diskIoCounters map[string]disk.IOCountersStat, fsStats map[string]*system.FsStats) (string, bool) {
-	var maxReadBytes uint64
-	maxReadDevice := "/"
+func findIoDevice(filesystem string, diskIoCounters map[string]disk.IOCountersStat) (string, bool) {
 	for _, d := range diskIoCounters {
 		if d.Name == filesystem || (d.Label != "" && d.Label == filesystem) {
 			return d.Name, true
 		}
-		if d.ReadBytes > maxReadBytes {
-			// don't use if device already exists in fsStats
-			if _, exists := fsStats[d.Name]; !exists {
-				maxReadBytes = d.ReadBytes
-				maxReadDevice = d.Name
-			}
-		}
 	}
-	return maxReadDevice, false
+	return "", false
 }
 
 // Sets start values for disk I/O stats.
@@ -222,8 +231,19 @@ func (a *Agent) initializeDiskIoStats(diskIoCounters map[string]disk.IOCountersS
 
 // Updates disk usage statistics for all monitored filesystems
 func (a *Agent) updateDiskUsage(systemStats *system.Stats) {
+	// Check if we should skip extra filesystem collection to avoid waking sleeping disks.
+	// Root filesystem is always updated since it can't be sleeping while the agent runs.
+	// Always collect on first call (lastDiskUsageUpdate is zero) or if caching is disabled.
+	cacheExtraFs := a.diskUsageCacheDuration > 0 &&
+		!a.lastDiskUsageUpdate.IsZero() &&
+		time.Since(a.lastDiskUsageUpdate) < a.diskUsageCacheDuration
+
 	// disk usage
 	for _, stats := range a.fsStats {
+		// Skip non-root filesystems if caching is active
+		if cacheExtraFs && !stats.Root {
+			continue
+		}
 		if d, err := disk.Usage(stats.Mountpoint); err == nil {
 			stats.DiskTotal = bytesToGigabytes(d.Total)
 			stats.DiskUsed = bytesToGigabytes(d.Used)
@@ -241,6 +261,11 @@ func (a *Agent) updateDiskUsage(systemStats *system.Stats) {
 			stats.TotalWrite = 0
 		}
 	}
+
+	// Update the last disk usage update time when we've collected extra filesystems
+	if !cacheExtraFs {
+		a.lastDiskUsageUpdate = time.Now()
+	}
 }
 
 // Updates disk I/O statistics for all monitored filesystems
@@ -312,3 +337,32 @@ func (a *Agent) updateDiskIo(cacheTimeMs uint16, systemStats *system.Stats) {
 		}
 	}
 }
+
+// getRootMountPoint returns the appropriate root mount point for the system
+// For immutable systems like Fedora Silverblue, it returns /sysroot instead of /
+func (a *Agent) getRootMountPoint() string {
+	// 1. Check if /etc/os-release contains indicators of an immutable system
+	if osReleaseContent, err := os.ReadFile("/etc/os-release"); err == nil {
+		content := string(osReleaseContent)
+		if strings.Contains(content, "fedora") && strings.Contains(content, "silverblue") ||
+			strings.Contains(content, "coreos") ||
+			strings.Contains(content, "flatcar") ||
+			strings.Contains(content, "rhel-atomic") ||
+			strings.Contains(content, "centos-atomic") {
+			// Verify that /sysroot exists before returning it
+			if _, err := os.Stat("/sysroot"); err == nil {
+				return "/sysroot"
+			}
+		}
+	}
+
+	// 2. Check if /run/ostree is present (ostree-based systems like Silverblue)
+	if _, err := os.Stat("/run/ostree"); err == nil {
+		// Verify that /sysroot exists before returning it
+		if _, err := os.Stat("/sysroot"); err == nil {
+			return "/sysroot"
+		}
+	}
+
+	return "/"
+}

agent/disk_test.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package agent
 
@@ -7,6 +6,7 @@ import (
 	"os"
 	"strings"
 	"testing"
+	"time"
 
 	"github.com/henrygd/beszel/internal/entities/system"
 	"github.com/shirou/gopsutil/v4/disk"
@@ -93,6 +93,62 @@ func TestParseFilesystemEntry(t *testing.T) {
 	}
 }
 
+func TestFindIoDevice(t *testing.T) {
+	t.Run("matches by device name", func(t *testing.T) {
+		ioCounters := map[string]disk.IOCountersStat{
+			"sda": {Name: "sda"},
+			"sdb": {Name: "sdb"},
+		}
+
+		device, ok := findIoDevice("sdb", ioCounters)
+		assert.True(t, ok)
+		assert.Equal(t, "sdb", device)
+	})
+
+	t.Run("matches by device label", func(t *testing.T) {
+		ioCounters := map[string]disk.IOCountersStat{
+			"sda": {Name: "sda", Label: "rootfs"},
+			"sdb": {Name: "sdb"},
+		}
+
+		device, ok := findIoDevice("rootfs", ioCounters)
+		assert.True(t, ok)
+		assert.Equal(t, "sda", device)
+	})
+
+	t.Run("returns no fallback when not found", func(t *testing.T) {
+		ioCounters := map[string]disk.IOCountersStat{
+			"sda": {Name: "sda"},
+			"sdb": {Name: "sdb"},
+		}
+
+		device, ok := findIoDevice("nvme0n1p1", ioCounters)
+		assert.False(t, ok)
+		assert.Equal(t, "", device)
+	})
+}
+
+func TestIsDockerSpecialMountpoint(t *testing.T) {
+	testCases := []struct {
+		name       string
+		mountpoint string
+		expected   bool
+	}{
+		{name: "hosts", mountpoint: "/etc/hosts", expected: true},
+		{name: "resolv", mountpoint: "/etc/resolv.conf", expected: true},
+		{name: "hostname", mountpoint: "/etc/hostname", expected: true},
+		{name: "root", mountpoint: "/", expected: false},
+		{name: "passwd", mountpoint: "/etc/passwd", expected: false},
+		{name: "extra-filesystem", mountpoint: "/extra-filesystems/sda1", expected: false},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			assert.Equal(t, tc.expected, isDockerSpecialMountpoint(tc.mountpoint))
+		})
+	}
+}
+
 func TestInitializeDiskInfoWithCustomNames(t *testing.T) {
 	// Set up environment variables
 	oldEnv := os.Getenv("EXTRA_FILESYSTEMS")
@@ -233,3 +289,86 @@ func TestExtraFsKeyGeneration(t *testing.T) {
 		})
 	}
 }
+
+func TestDiskUsageCaching(t *testing.T) {
+	t.Run("caching disabled updates all filesystems", func(t *testing.T) {
+		agent := &Agent{
+			fsStats: map[string]*system.FsStats{
+				"sda": {Root: true, Mountpoint: "/"},
+				"sdb": {Root: false, Mountpoint: "/mnt/storage"},
+			},
+			diskUsageCacheDuration: 0, // caching disabled
+		}
+
+		var stats system.Stats
+		agent.updateDiskUsage(&stats)
+
+		// Both should be updated (non-zero values from disk.Usage)
+		// Root stats should be populated in systemStats
+		assert.True(t, agent.lastDiskUsageUpdate.IsZero() || !agent.lastDiskUsageUpdate.IsZero(),
+			"lastDiskUsageUpdate should be set when caching is disabled")
+	})
+
+	t.Run("caching enabled always updates root filesystem", func(t *testing.T) {
+		agent := &Agent{
+			fsStats: map[string]*system.FsStats{
+				"sda": {Root: true, Mountpoint: "/", DiskTotal: 100, DiskUsed: 50},
+				"sdb": {Root: false, Mountpoint: "/mnt/storage", DiskTotal: 200, DiskUsed: 100},
+			},
+			diskUsageCacheDuration: 1 * time.Hour,
+			lastDiskUsageUpdate:    time.Now(), // cache is fresh
+		}
+
+		// Store original extra fs values
+		originalExtraTotal := agent.fsStats["sdb"].DiskTotal
+		originalExtraUsed := agent.fsStats["sdb"].DiskUsed
+
+		var stats system.Stats
+		agent.updateDiskUsage(&stats)
+
+		// Root should be updated (systemStats populated from disk.Usage call)
+		// We can't easily check if disk.Usage was called, but we verify the flow works
+
+		// Extra filesystem should retain cached values (not reset)
+		assert.Equal(t, originalExtraTotal, agent.fsStats["sdb"].DiskTotal,
+			"extra filesystem DiskTotal should be unchanged when cached")
+		assert.Equal(t, originalExtraUsed, agent.fsStats["sdb"].DiskUsed,
+			"extra filesystem DiskUsed should be unchanged when cached")
+	})
+
+	t.Run("first call always updates all filesystems", func(t *testing.T) {
+		agent := &Agent{
+			fsStats: map[string]*system.FsStats{
+				"sda": {Root: true, Mountpoint: "/"},
+				"sdb": {Root: false, Mountpoint: "/mnt/storage"},
+			},
+			diskUsageCacheDuration: 1 * time.Hour,
+			// lastDiskUsageUpdate is zero (first call)
+		}
+
+		var stats system.Stats
+		agent.updateDiskUsage(&stats)
+
+		// After first call, lastDiskUsageUpdate should be set
+		assert.False(t, agent.lastDiskUsageUpdate.IsZero(),
+			"lastDiskUsageUpdate should be set after first call")
+	})
+
+	t.Run("expired cache updates extra filesystems", func(t *testing.T) {
+		agent := &Agent{
+			fsStats: map[string]*system.FsStats{
+				"sda": {Root: true, Mountpoint: "/"},
+				"sdb": {Root: false, Mountpoint: "/mnt/storage"},
+			},
+			diskUsageCacheDuration: 1 * time.Millisecond,
+			lastDiskUsageUpdate:    time.Now().Add(-1 * time.Second), // cache expired
+		}
+
+		var stats system.Stats
+		agent.updateDiskUsage(&stats)
+
+		// lastDiskUsageUpdate should be refreshed since cache expired
+		assert.True(t, time.Since(agent.lastDiskUsageUpdate) < time.Second,
+			"lastDiskUsageUpdate should be refreshed when cache expires")
+	})
+}

agent/docker.go

@@ -1,6 +1,7 @@
 package agent
 
 import (
+	"bufio"
 	"bytes"
 	"context"
 	"encoding/binary"
@@ -14,6 +15,7 @@ import (
 	"net/url"
 	"os"
 	"path"
+	"regexp"
 	"strings"
 	"sync"
 	"time"
@@ -24,6 +26,11 @@ import (
 	"github.com/blang/semver"
 )
 
+// ansiEscapePattern matches ANSI escape sequences (colors, cursor movement, etc.)
+// This includes CSI sequences like \x1b[...m and simple escapes like \x1b[K
+var ansiEscapePattern = regexp.MustCompile(`\x1b\[[0-9;]*[a-zA-Z]|\x1b\][^\x07]*\x07|\x1b[@-Z\\-_]`)
+var dockerContainerIDPattern = regexp.MustCompile(`^[a-fA-F0-9]{12,64}$`)
+
 const (
 	// Docker API timeout in milliseconds
 	dockerTimeoutMs = 2100
@@ -55,6 +62,7 @@ type dockerManager struct {
 	decoder             *json.Decoder               // Reusable JSON decoder that reads from buf
 	apiStats            *container.ApiStats         // Reusable API stats object
 	excludeContainers   []string                    // Patterns to exclude containers by name
+	usingPodman         bool                        // Whether the Docker Engine API is running on Podman
 
 	// Cache-time-aware tracking for CPU stats (similar to cpu.go)
 	// Maps cache time intervals to container-specific CPU usage tracking
@@ -66,6 +74,7 @@ type dockerManager struct {
 	// cacheTimeMs -> DeltaTracker for network bytes sent/received
 	networkSentTrackers map[uint16]*deltatracker.DeltaTracker[string, uint64]
 	networkRecvTrackers map[uint16]*deltatracker.DeltaTracker[string, uint64]
+	retrySleep          func(time.Duration)
 }
 
 // userAgentRoundTripper is a custom http.RoundTripper that adds a User-Agent header to all requests
@@ -329,6 +338,8 @@ func validateCpuPercentage(cpuPct float64, containerName string) error {
 func updateContainerStatsValues(stats *container.Stats, cpuPct float64, usedMemory uint64, sent_delta, recv_delta uint64, readTime time.Time) {
 	stats.Cpu = twoDecimals(cpuPct)
 	stats.Mem = bytesToMegabytes(float64(usedMemory))
+	stats.Bandwidth = [2]uint64{sent_delta, recv_delta}
+	// TODO(0.19+): stop populating NetworkSent/NetworkRecv (deprecated in 0.18.3)
 	stats.NetworkSent = bytesToMegabytes(float64(sent_delta))
 	stats.NetworkRecv = bytesToMegabytes(float64(recv_delta))
 	stats.PrevReadTime = readTime
@@ -397,6 +408,8 @@ func (dm *dockerManager) updateContainerStats(ctr *container.ApiInfo, cacheTimeM
 	// reset current stats
 	stats.Cpu = 0
 	stats.Mem = 0
+	stats.Bandwidth = [2]uint64{0, 0}
+	// TODO(0.19+): stop populating NetworkSent/NetworkRecv (deprecated in 0.18.3)
 	stats.NetworkSent = 0
 	stats.NetworkRecv = 0
 
@@ -473,7 +486,7 @@ func (dm *dockerManager) deleteContainerStatsSync(id string) {
 }
 
 // Creates a new http client for Docker or Podman API
-func newDockerManager(a *Agent) *dockerManager {
+func newDockerManager() *dockerManager {
 	dockerHost, exists := GetEnv("DOCKER_HOST")
 	if exists {
 		// return nil if set to empty string
@@ -555,16 +568,17 @@ func newDockerManager(a *Agent) *dockerManager {
 		lastCpuReadTime:     make(map[uint16]map[string]time.Time),
 		networkSentTrackers: make(map[uint16]*deltatracker.DeltaTracker[string, uint64]),
 		networkRecvTrackers: make(map[uint16]*deltatracker.DeltaTracker[string, uint64]),
+		retrySleep:          time.Sleep,
 	}
 
 	// If using podman, return client
 	if strings.Contains(dockerHost, "podman") {
-		a.systemInfo.Podman = true
+		manager.usingPodman = true
 		manager.goodDockerVersion = true
 		return manager
 	}
 
-	// this can take up to 5 seconds with retry, so run in goroutine
+	// run version check in goroutine to avoid blocking (server may not be ready and requires retries)
 	go manager.checkDockerVersion()
 
 	// give version check a chance to complete before returning
@@ -584,18 +598,18 @@ func (dm *dockerManager) checkDockerVersion() {
 	const versionMaxTries = 2
 	for i := 1; i <= versionMaxTries; i++ {
 		resp, err = dm.client.Get("http://localhost/version")
-		if err == nil {
+		if err == nil && resp.StatusCode == http.StatusOK {
 			break
 		}
 		if resp != nil {
 			resp.Body.Close()
 		}
 		if i < versionMaxTries {
-			slog.Debug("Failed to get Docker version; retrying", "attempt", i, "error", err)
-			time.Sleep(5 * time.Second)
+			slog.Debug("Failed to get Docker version; retrying", "attempt", i, "err", err, "response", resp)
+			dm.retrySleep(5 * time.Second)
 		}
 	}
-	if err != nil {
+	if err != nil || resp.StatusCode != http.StatusOK {
 		return
 	}
 	if err := dm.decode(resp, &versionInfo); err != nil {
@@ -637,9 +651,34 @@ func getDockerHost() string {
 	return scheme + socks[0]
 }
 
+func validateContainerID(containerID string) error {
+	if !dockerContainerIDPattern.MatchString(containerID) {
+		return fmt.Errorf("invalid container id")
+	}
+	return nil
+}
+
+func buildDockerContainerEndpoint(containerID, action string, query url.Values) (string, error) {
+	if err := validateContainerID(containerID); err != nil {
+		return "", err
+	}
+	u := &url.URL{
+		Scheme: "http",
+		Host:   "localhost",
+		Path:   fmt.Sprintf("/containers/%s/%s", url.PathEscape(containerID), action),
+	}
+	if len(query) > 0 {
+		u.RawQuery = query.Encode()
+	}
+	return u.String(), nil
+}
+
 // getContainerInfo fetches the inspection data for a container
 func (dm *dockerManager) getContainerInfo(ctx context.Context, containerID string) ([]byte, error) {
-	endpoint := fmt.Sprintf("http://localhost/containers/%s/json", containerID)
+	endpoint, err := buildDockerContainerEndpoint(containerID, "json", nil)
+	if err != nil {
+		return nil, err
+	}
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint, nil)
 	if err != nil {
 		return nil, err
@@ -670,7 +709,15 @@ func (dm *dockerManager) getContainerInfo(ctx context.Context, containerID strin
 
 // getLogs fetches the logs for a container
 func (dm *dockerManager) getLogs(ctx context.Context, containerID string) (string, error) {
-	endpoint := fmt.Sprintf("http://localhost/containers/%s/logs?stdout=1&stderr=1&tail=%d", containerID, dockerLogsTail)
+	query := url.Values{
+		"stdout": []string{"1"},
+		"stderr": []string{"1"},
+		"tail":   []string{fmt.Sprintf("%d", dockerLogsTail)},
+	}
+	endpoint, err := buildDockerContainerEndpoint(containerID, "logs", query)
+	if err != nil {
+		return "", err
+	}
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint, nil)
 	if err != nil {
 		return "", err
@@ -688,17 +735,52 @@ func (dm *dockerManager) getLogs(ctx context.Context, containerID string) (strin
 	}
 
 	var builder strings.Builder
-	if err := decodeDockerLogStream(resp.Body, &builder); err != nil {
+	contentType := resp.Header.Get("Content-Type")
+	multiplexed := strings.HasSuffix(contentType, "multiplexed-stream")
+	logReader := io.Reader(resp.Body)
+	if !multiplexed {
+		// Podman may return multiplexed logs without Content-Type. Sniff the first frame header
+		// with a small buffered reader only when the header check fails.
+		bufferedReader := bufio.NewReaderSize(resp.Body, 8)
+		multiplexed = detectDockerMultiplexedStream(bufferedReader)
+		logReader = bufferedReader
+	}
+	if err := decodeDockerLogStream(logReader, &builder, multiplexed); err != nil {
 		return "", err
 	}
 
-	return builder.String(), nil
+	// Strip ANSI escape sequences from logs for clean display in web UI
+	logs := builder.String()
+	if strings.Contains(logs, "\x1b") {
+		logs = ansiEscapePattern.ReplaceAllString(logs, "")
+	}
+	return logs, nil
 }
 
-func decodeDockerLogStream(reader io.Reader, builder *strings.Builder) error {
+func detectDockerMultiplexedStream(reader *bufio.Reader) bool {
+	const headerSize = 8
+	header, err := reader.Peek(headerSize)
+	if err != nil {
+		return false
+	}
+	if header[0] != 0x01 && header[0] != 0x02 {
+		return false
+	}
+	// Docker's stream framing header reserves bytes 1-3 as zero.
+	if header[1] != 0 || header[2] != 0 || header[3] != 0 {
+		return false
+	}
+	frameLen := binary.BigEndian.Uint32(header[4:])
+	return frameLen <= maxLogFrameSize
+}
+
+func decodeDockerLogStream(reader io.Reader, builder *strings.Builder, multiplexed bool) error {
+	if !multiplexed {
+		_, err := io.Copy(builder, io.LimitReader(reader, maxTotalLogSize))
+		return err
+	}
 	const headerSize = 8
 	var header [headerSize]byte
-	buf := make([]byte, 0, dockerLogsTail*200)
 	totalBytesRead := 0
 
 	for {
@@ -722,36 +804,37 @@ func decodeDockerLogStream(reader io.Reader, builder *strings.Builder) error {
 		// Check if reading this frame would exceed total log size limit
 		if totalBytesRead+int(frameLen) > maxTotalLogSize {
 			// Read and discard remaining data to avoid blocking
-			_, _ = io.Copy(io.Discard, io.LimitReader(reader, int64(frameLen)))
+			_, _ = io.CopyN(io.Discard, reader, int64(frameLen))
 			slog.Debug("Truncating logs: limit reached", "read", totalBytesRead, "limit", maxTotalLogSize)
 			return nil
 		}
 
-		buf = allocateBuffer(buf, int(frameLen))
-		if _, err := io.ReadFull(reader, buf[:frameLen]); err != nil {
+		n, err := io.CopyN(builder, reader, int64(frameLen))
+		if err != nil {
 			if errors.Is(err, io.EOF) || errors.Is(err, io.ErrUnexpectedEOF) {
-				if len(buf) > 0 {
-					builder.Write(buf[:min(int(frameLen), len(buf))])
-				}
 				return nil
 			}
 			return err
 		}
-		builder.Write(buf[:frameLen])
-		totalBytesRead += int(frameLen)
+		totalBytesRead += int(n)
 	}
 }
 
-func allocateBuffer(current []byte, needed int) []byte {
-	if cap(current) >= needed {
-		return current[:needed]
+// GetHostInfo fetches the system info from Docker
+func (dm *dockerManager) GetHostInfo() (info container.HostInfo, err error) {
+	resp, err := dm.client.Get("http://localhost/info")
+	if err != nil {
+		return info, err
 	}
-	return make([]byte, needed)
+	defer resp.Body.Close()
+
+	if err := json.NewDecoder(resp.Body).Decode(&info); err != nil {
+		return info, err
+	}
+
+	return info, nil
 }
 
-func min(a, b int) int {
-	if a < b {
-		return a
-	}
-	return b
+func (dm *dockerManager) IsPodman() bool {
+	return dm.usingPodman
 }

agent/docker_test.go

@@ -1,11 +1,17 @@
 //go:build testing
-// +build testing
 
 package agent
 
 import (
 	"bytes"
+	"context"
 	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"net/http/httptest"
 	"os"
 	"strings"
 	"testing"
@@ -19,6 +25,37 @@ import (
 
 var defaultCacheTimeMs = uint16(60_000)
 
+type recordingRoundTripper struct {
+	statusCode  int
+	body        string
+	contentType string
+	called      bool
+	lastPath    string
+	lastQuery   map[string]string
+}
+
+func (rt *recordingRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
+	rt.called = true
+	rt.lastPath = req.URL.EscapedPath()
+	rt.lastQuery = map[string]string{}
+	for key, values := range req.URL.Query() {
+		if len(values) > 0 {
+			rt.lastQuery[key] = values[0]
+		}
+	}
+	resp := &http.Response{
+		StatusCode: rt.statusCode,
+		Status:     "200 OK",
+		Header:     make(http.Header),
+		Body:       io.NopCloser(strings.NewReader(rt.body)),
+		Request:    req,
+	}
+	if rt.contentType != "" {
+		resp.Header.Set("Content-Type", rt.contentType)
+	}
+	return resp, nil
+}
+
 // cycleCpuDeltas cycles the CPU tracking data for a specific cache time interval
 func (dm *dockerManager) cycleCpuDeltas(cacheTimeMs uint16) {
 	// Clear the CPU tracking maps for this cache time interval
@@ -110,6 +147,72 @@ func TestCalculateMemoryUsage(t *testing.T) {
 	}
 }
 
+func TestBuildDockerContainerEndpoint(t *testing.T) {
+	t.Run("valid container ID builds escaped endpoint", func(t *testing.T) {
+		endpoint, err := buildDockerContainerEndpoint("0123456789ab", "json", nil)
+		require.NoError(t, err)
+		assert.Equal(t, "http://localhost/containers/0123456789ab/json", endpoint)
+	})
+
+	t.Run("invalid container ID is rejected", func(t *testing.T) {
+		_, err := buildDockerContainerEndpoint("../../version", "json", nil)
+		require.Error(t, err)
+		assert.Contains(t, err.Error(), "invalid container id")
+	})
+}
+
+func TestContainerDetailsRequestsValidateContainerID(t *testing.T) {
+	rt := &recordingRoundTripper{
+		statusCode: 200,
+		body:       `{"Config":{"Env":["SECRET=1"]}}`,
+	}
+	dm := &dockerManager{
+		client: &http.Client{Transport: rt},
+	}
+
+	_, err := dm.getContainerInfo(context.Background(), "../version")
+	require.Error(t, err)
+	assert.Contains(t, err.Error(), "invalid container id")
+	assert.False(t, rt.called, "request should be rejected before dispatching to Docker API")
+}
+
+func TestContainerDetailsRequestsUseExpectedDockerPaths(t *testing.T) {
+	t.Run("container info uses container json endpoint", func(t *testing.T) {
+		rt := &recordingRoundTripper{
+			statusCode: 200,
+			body:       `{"Config":{"Env":["SECRET=1"]},"Name":"demo"}`,
+		}
+		dm := &dockerManager{
+			client: &http.Client{Transport: rt},
+		}
+
+		body, err := dm.getContainerInfo(context.Background(), "0123456789ab")
+		require.NoError(t, err)
+		assert.True(t, rt.called)
+		assert.Equal(t, "/containers/0123456789ab/json", rt.lastPath)
+		assert.NotContains(t, string(body), "SECRET=1", "sensitive env vars should be removed")
+	})
+
+	t.Run("container logs uses expected endpoint and query params", func(t *testing.T) {
+		rt := &recordingRoundTripper{
+			statusCode: 200,
+			body:       "line1\nline2\n",
+		}
+		dm := &dockerManager{
+			client: &http.Client{Transport: rt},
+		}
+
+		logs, err := dm.getLogs(context.Background(), "abcdef123456")
+		require.NoError(t, err)
+		assert.True(t, rt.called)
+		assert.Equal(t, "/containers/abcdef123456/logs", rt.lastPath)
+		assert.Equal(t, "1", rt.lastQuery["stdout"])
+		assert.Equal(t, "1", rt.lastQuery["stderr"])
+		assert.Equal(t, "200", rt.lastQuery["tail"])
+		assert.Equal(t, "line1\nline2\n", logs)
+	})
+}
+
 func TestValidateCpuPercentage(t *testing.T) {
 	tests := []struct {
 		name          string
@@ -184,11 +287,12 @@ func TestUpdateContainerStatsValues(t *testing.T) {
 	// Check memory (should be converted to MB: 1048576 bytes = 1 MB)
 	assert.Equal(t, 1.0, stats.Mem)
 
-	// Check network sent (should be converted to MB: 524288 bytes = 0.5 MB)
-	assert.Equal(t, 0.5, stats.NetworkSent)
+	// Check bandwidth (raw bytes)
+	assert.Equal(t, [2]uint64{524288, 262144}, stats.Bandwidth)
 
-	// Check network recv (should be converted to MB: 262144 bytes = 0.25 MB)
-	assert.Equal(t, 0.25, stats.NetworkRecv)
+	// Deprecated fields still populated for backward compatibility with older hubs
+	assert.Equal(t, 0.5, stats.NetworkSent)  // 524288 bytes = 0.5 MB
+	assert.Equal(t, 0.25, stats.NetworkRecv) // 262144 bytes = 0.25 MB
 
 	// Check read time
 	assert.Equal(t, testTime, stats.PrevReadTime)
@@ -378,6 +482,117 @@ func TestDockerManagerCreation(t *testing.T) {
 	assert.NotNil(t, dm.networkRecvTrackers)
 }
 
+func TestCheckDockerVersion(t *testing.T) {
+	tests := []struct {
+		name      string
+		responses []struct {
+			statusCode int
+			body       string
+		}
+		expectedGood     bool
+		expectedRequests int
+	}{
+		{
+			name: "200 with good version on first try",
+			responses: []struct {
+				statusCode int
+				body       string
+			}{
+				{http.StatusOK, `{"Version":"25.0.1"}`},
+			},
+			expectedGood:     true,
+			expectedRequests: 1,
+		},
+		{
+			name: "200 with old version on first try",
+			responses: []struct {
+				statusCode int
+				body       string
+			}{
+				{http.StatusOK, `{"Version":"24.0.7"}`},
+			},
+			expectedGood:     false,
+			expectedRequests: 1,
+		},
+		{
+			name: "non-200 then 200 with good version",
+			responses: []struct {
+				statusCode int
+				body       string
+			}{
+				{http.StatusServiceUnavailable, `"not ready"`},
+				{http.StatusOK, `{"Version":"25.1.0"}`},
+			},
+			expectedGood:     true,
+			expectedRequests: 2,
+		},
+		{
+			name: "non-200 on all retries",
+			responses: []struct {
+				statusCode int
+				body       string
+			}{
+				{http.StatusInternalServerError, `"error"`},
+				{http.StatusUnauthorized, `"error"`},
+			},
+			expectedGood:     false,
+			expectedRequests: 2,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			requestCount := 0
+			server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+				idx := requestCount
+				requestCount++
+				if idx >= len(tt.responses) {
+					idx = len(tt.responses) - 1
+				}
+				w.WriteHeader(tt.responses[idx].statusCode)
+				fmt.Fprint(w, tt.responses[idx].body)
+			}))
+			defer server.Close()
+
+			dm := &dockerManager{
+				client: &http.Client{
+					Transport: &http.Transport{
+						DialContext: func(_ context.Context, network, _ string) (net.Conn, error) {
+							return net.Dial(network, server.Listener.Addr().String())
+						},
+					},
+				},
+				retrySleep: func(time.Duration) {},
+			}
+
+			dm.checkDockerVersion()
+
+			assert.Equal(t, tt.expectedGood, dm.goodDockerVersion)
+			assert.Equal(t, tt.expectedRequests, requestCount)
+		})
+	}
+
+	t.Run("request error on all retries", func(t *testing.T) {
+		requestCount := 0
+		dm := &dockerManager{
+			client: &http.Client{
+				Transport: &http.Transport{
+					DialContext: func(_ context.Context, _, _ string) (net.Conn, error) {
+						requestCount++
+						return nil, errors.New("connection refused")
+					},
+				},
+			},
+			retrySleep: func(time.Duration) {},
+		}
+
+		dm.checkDockerVersion()
+
+		assert.False(t, dm.goodDockerVersion)
+		assert.Equal(t, 2, requestCount)
+	})
+}
+
 func TestCycleCpuDeltas(t *testing.T) {
 	dm := &dockerManager{
 		lastCpuContainer: map[uint16]map[string]uint64{
@@ -527,8 +742,10 @@ func TestContainerStatsInitialization(t *testing.T) {
 
 	assert.Equal(t, 45.67, stats.Cpu)
 	assert.Equal(t, 2.0, stats.Mem)
-	assert.Equal(t, 1.0, stats.NetworkSent)
-	assert.Equal(t, 0.5, stats.NetworkRecv)
+	assert.Equal(t, [2]uint64{1048576, 524288}, stats.Bandwidth)
+	// Deprecated fields still populated for backward compatibility with older hubs
+	assert.Equal(t, 1.0, stats.NetworkSent) // 1048576 bytes = 1 MB
+	assert.Equal(t, 0.5, stats.NetworkRecv) // 524288 bytes = 0.5 MB
 	assert.Equal(t, testTime, stats.PrevReadTime)
 }
 
@@ -689,11 +906,49 @@ func TestContainerStatsEndToEndWithRealData(t *testing.T) {
 
 	assert.Equal(t, cpuPct, testStats.Cpu)
 	assert.Equal(t, bytesToMegabytes(float64(usedMemory)), testStats.Mem)
+	assert.Equal(t, [2]uint64{1000000, 500000}, testStats.Bandwidth)
+	// Deprecated fields still populated for backward compatibility with older hubs
 	assert.Equal(t, bytesToMegabytes(1000000), testStats.NetworkSent)
 	assert.Equal(t, bytesToMegabytes(500000), testStats.NetworkRecv)
 	assert.Equal(t, testTime, testStats.PrevReadTime)
 }
 
+func TestGetLogsDetectsMultiplexedWithoutContentType(t *testing.T) {
+	// Docker multiplexed frame: [stream][0,0,0][len(4 bytes BE)][payload]
+	frame := []byte{
+		0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05,
+		'H', 'e', 'l', 'l', 'o',
+	}
+	rt := &recordingRoundTripper{
+		statusCode: 200,
+		body:       string(frame),
+		// Intentionally omit content type to simulate Podman behavior.
+	}
+	dm := &dockerManager{
+		client: &http.Client{Transport: rt},
+	}
+
+	logs, err := dm.getLogs(context.Background(), "abcdef123456")
+	require.NoError(t, err)
+	assert.Equal(t, "Hello", logs)
+}
+
+func TestGetLogsDoesNotMisclassifyRawStreamAsMultiplexed(t *testing.T) {
+	// Starts with 0x01, but doesn't match Docker frame signature (reserved bytes aren't all zero).
+	raw := []byte{0x01, 0x02, 0x03, 0x04, 'r', 'a', 'w'}
+	rt := &recordingRoundTripper{
+		statusCode: 200,
+		body:       string(raw),
+	}
+	dm := &dockerManager{
+		client: &http.Client{Transport: rt},
+	}
+
+	logs, err := dm.getLogs(context.Background(), "abcdef123456")
+	require.NoError(t, err)
+	assert.Equal(t, raw, []byte(logs))
+}
+
 func TestEdgeCasesWithRealData(t *testing.T) {
 	// Test with minimal container stats
 	minimalStats := &container.ApiStats{
@@ -802,6 +1057,24 @@ func TestNetworkRateCalculationFormula(t *testing.T) {
 	}
 }
 
+func TestGetHostInfo(t *testing.T) {
+	data, err := os.ReadFile("test-data/system_info.json")
+	require.NoError(t, err)
+
+	var info container.HostInfo
+	err = json.Unmarshal(data, &info)
+	require.NoError(t, err)
+
+	assert.Equal(t, "6.8.0-31-generic", info.KernelVersion)
+	assert.Equal(t, "Ubuntu 24.04 LTS", info.OperatingSystem)
+	// assert.Equal(t, "24.04", info.OSVersion)
+	// assert.Equal(t, "linux", info.OSType)
+	// assert.Equal(t, "x86_64", info.Architecture)
+	assert.EqualValues(t, 4, info.NCPU)
+	assert.EqualValues(t, 2095882240, info.MemTotal)
+	// assert.Equal(t, "27.0.1", info.ServerVersion)
+}
+
 func TestDeltaTrackerCacheTimeIsolation(t *testing.T) {
 	// Test that different cache times have separate DeltaTracker instances
 	dm := &dockerManager{
@@ -932,6 +1205,7 @@ func TestDecodeDockerLogStream(t *testing.T) {
 		input       []byte
 		expected    string
 		expectError bool
+		multiplexed bool
 	}{
 		{
 			name: "simple log entry",
@@ -942,6 +1216,7 @@ func TestDecodeDockerLogStream(t *testing.T) {
 			},
 			expected:    "Hello World",
 			expectError: false,
+			multiplexed: true,
 		},
 		{
 			name: "multiple frames",
@@ -955,6 +1230,7 @@ func TestDecodeDockerLogStream(t *testing.T) {
 			},
 			expected:    "HelloWorld",
 			expectError: false,
+			multiplexed: true,
 		},
 		{
 			name: "zero length frame",
@@ -967,12 +1243,20 @@ func TestDecodeDockerLogStream(t *testing.T) {
 			},
 			expected:    "Hello",
 			expectError: false,
+			multiplexed: true,
 		},
 		{
 			name:        "empty input",
 			input:       []byte{},
 			expected:    "",
 			expectError: false,
+			multiplexed: true,
+		},
+		{
+			name:        "raw stream (not multiplexed)",
+			input:       []byte("raw log content"),
+			expected:    "raw log content",
+			multiplexed: false,
 		},
 	}
 
@@ -980,7 +1264,7 @@ func TestDecodeDockerLogStream(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			reader := bytes.NewReader(tt.input)
 			var builder strings.Builder
-			err := decodeDockerLogStream(reader, &builder)
+			err := decodeDockerLogStream(reader, &builder, tt.multiplexed)
 
 			if tt.expectError {
 				assert.Error(t, err)
@@ -1004,7 +1288,7 @@ func TestDecodeDockerLogStreamMemoryProtection(t *testing.T) {
 
 		reader := bytes.NewReader(input)
 		var builder strings.Builder
-		err := decodeDockerLogStream(reader, &builder)
+		err := decodeDockerLogStream(reader, &builder, true)
 
 		assert.Error(t, err)
 		assert.Contains(t, err.Error(), "log frame size")
@@ -1038,7 +1322,7 @@ func TestDecodeDockerLogStreamMemoryProtection(t *testing.T) {
 
 		reader := bytes.NewReader(input)
 		var builder strings.Builder
-		err := decodeDockerLogStream(reader, &builder)
+		err := decodeDockerLogStream(reader, &builder, true)
 
 		// Should complete without error (graceful truncation)
 		assert.NoError(t, err)
@@ -1053,53 +1337,6 @@ func TestDecodeDockerLogStreamMemoryProtection(t *testing.T) {
 	})
 }
 
-func TestAllocateBuffer(t *testing.T) {
-	tests := []struct {
-		name          string
-		currentCap    int
-		needed        int
-		expectedCap   int
-		shouldRealloc bool
-	}{
-		{
-			name:          "buffer has enough capacity",
-			currentCap:    1024,
-			needed:        512,
-			expectedCap:   1024,
-			shouldRealloc: false,
-		},
-		{
-			name:          "buffer needs reallocation",
-			currentCap:    512,
-			needed:        1024,
-			expectedCap:   1024,
-			shouldRealloc: true,
-		},
-		{
-			name:          "buffer needs exact size",
-			currentCap:    1024,
-			needed:        1024,
-			expectedCap:   1024,
-			shouldRealloc: false,
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			current := make([]byte, 0, tt.currentCap)
-			result := allocateBuffer(current, tt.needed)
-
-			assert.Equal(t, tt.needed, len(result))
-			assert.GreaterOrEqual(t, cap(result), tt.expectedCap)
-
-			if tt.shouldRealloc {
-				// If reallocation was needed, capacity should be at least the needed size
-				assert.GreaterOrEqual(t, cap(result), tt.needed)
-			}
-		})
-	}
-}
-
 func TestShouldExcludeContainer(t *testing.T) {
 	tests := []struct {
 		name          string
@@ -1203,3 +1440,59 @@ func TestShouldExcludeContainer(t *testing.T) {
 		})
 	}
 }
+
+func TestAnsiEscapePattern(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected string
+	}{
+		{
+			name:     "no ANSI codes",
+			input:    "Hello, World!",
+			expected: "Hello, World!",
+		},
+		{
+			name:     "simple color code",
+			input:    "\x1b[34mINFO\x1b[0m client mode",
+			expected: "INFO client mode",
+		},
+		{
+			name:     "multiple color codes",
+			input:    "\x1b[31mERROR\x1b[0m: \x1b[33mWarning\x1b[0m message",
+			expected: "ERROR: Warning message",
+		},
+		{
+			name:     "bold and color",
+			input:    "\x1b[1;32mSUCCESS\x1b[0m",
+			expected: "SUCCESS",
+		},
+		{
+			name:     "cursor movement codes",
+			input:    "Line 1\x1b[KLine 2",
+			expected: "Line 1Line 2",
+		},
+		{
+			name:     "256 color code",
+			input:    "\x1b[38;5;196mRed text\x1b[0m",
+			expected: "Red text",
+		},
+		{
+			name:     "RGB/truecolor code",
+			input:    "\x1b[38;2;255;0;0mRed text\x1b[0m",
+			expected: "Red text",
+		},
+		{
+			name:     "mixed content with newlines",
+			input:    "\x1b[34m2024-01-01 12:00:00\x1b[0m INFO Starting\n\x1b[31m2024-01-01 12:00:01\x1b[0m ERROR Failed",
+			expected: "2024-01-01 12:00:00 INFO Starting\n2024-01-01 12:00:01 ERROR Failed",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := ansiEscapePattern.ReplaceAllString(tt.input, "")
+			assert.Equal(t, tt.expected, result)
+		})
+	}
+}

agent/emmc_common.go

@@ -0,0 +1,95 @@
+package agent
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+func isEmmcBlockName(name string) bool {
+	if !strings.HasPrefix(name, "mmcblk") {
+		return false
+	}
+	suffix := strings.TrimPrefix(name, "mmcblk")
+	if suffix == "" {
+		return false
+	}
+	for _, c := range suffix {
+		if c < '0' || c > '9' {
+			return false
+		}
+	}
+	return true
+}
+
+func parseHexOrDecByte(s string) (uint8, bool) {
+	s = strings.TrimSpace(s)
+	if s == "" {
+		return 0, false
+	}
+	base := 10
+	if strings.HasPrefix(s, "0x") || strings.HasPrefix(s, "0X") {
+		base = 16
+		s = s[2:]
+	}
+	parsed, err := strconv.ParseUint(s, base, 8)
+	if err != nil {
+		return 0, false
+	}
+	return uint8(parsed), true
+}
+
+func parseHexBytePair(s string) (uint8, uint8, bool) {
+	fields := strings.Fields(s)
+	if len(fields) < 2 {
+		return 0, 0, false
+	}
+	a, okA := parseHexOrDecByte(fields[0])
+	b, okB := parseHexOrDecByte(fields[1])
+	if !okA && !okB {
+		return 0, 0, false
+	}
+	return a, b, true
+}
+
+func emmcSmartStatus(preEOL uint8) string {
+	switch preEOL {
+	case 0x01:
+		return "PASSED"
+	case 0x02:
+		return "WARNING"
+	case 0x03:
+		return "FAILED"
+	default:
+		return "UNKNOWN"
+	}
+}
+
+func emmcPreEOLString(preEOL uint8) string {
+	switch preEOL {
+	case 0x01:
+		return "0x01 (normal)"
+	case 0x02:
+		return "0x02 (warning)"
+	case 0x03:
+		return "0x03 (urgent)"
+	default:
+		return fmt.Sprintf("0x%02x", preEOL)
+	}
+}
+
+func emmcLifeTimeString(v uint8) string {
+	// JEDEC eMMC: 0x01..0x0A => 0-100% used in 10% steps, 0x0B => exceeded.
+	switch {
+	case v == 0:
+		return "0x00 (not reported)"
+	case v >= 0x01 && v <= 0x0A:
+		low := int(v-1) * 10
+		high := int(v) * 10
+		return fmt.Sprintf("0x%02x (%d-%d%% used)", v, low, high)
+	case v == 0x0B:
+		return "0x0b (>100% used)"
+	default:
+		return fmt.Sprintf("0x%02x", v)
+	}
+}

agent/emmc_common_test.go

@@ -0,0 +1,78 @@
+package agent
+
+import "testing"
+
+func TestParseHexOrDecByte(t *testing.T) {
+	tests := []struct {
+		in   string
+		want uint8
+		ok   bool
+	}{
+		{"0x01", 1, true},
+		{"0X0b", 11, true},
+		{"01", 1, true},
+		{" 3 ", 3, true},
+		{"", 0, false},
+		{"0x", 0, false},
+		{"nope", 0, false},
+	}
+
+	for _, tt := range tests {
+		got, ok := parseHexOrDecByte(tt.in)
+		if ok != tt.ok || got != tt.want {
+			t.Fatalf("parseHexOrDecByte(%q) = (%d,%v), want (%d,%v)", tt.in, got, ok, tt.want, tt.ok)
+		}
+	}
+}
+
+func TestParseHexBytePair(t *testing.T) {
+	a, b, ok := parseHexBytePair("0x01 0x02\n")
+	if !ok || a != 1 || b != 2 {
+		t.Fatalf("parseHexBytePair hex = (%d,%d,%v), want (1,2,true)", a, b, ok)
+	}
+
+	a, b, ok = parseHexBytePair("01 02")
+	if !ok || a != 1 || b != 2 {
+		t.Fatalf("parseHexBytePair dec = (%d,%d,%v), want (1,2,true)", a, b, ok)
+	}
+
+	_, _, ok = parseHexBytePair("0x01")
+	if ok {
+		t.Fatalf("parseHexBytePair short input ok=true, want false")
+	}
+}
+
+func TestEmmcSmartStatus(t *testing.T) {
+	if got := emmcSmartStatus(0x01); got != "PASSED" {
+		t.Fatalf("emmcSmartStatus(0x01) = %q, want PASSED", got)
+	}
+	if got := emmcSmartStatus(0x02); got != "WARNING" {
+		t.Fatalf("emmcSmartStatus(0x02) = %q, want WARNING", got)
+	}
+	if got := emmcSmartStatus(0x03); got != "FAILED" {
+		t.Fatalf("emmcSmartStatus(0x03) = %q, want FAILED", got)
+	}
+	if got := emmcSmartStatus(0x00); got != "UNKNOWN" {
+		t.Fatalf("emmcSmartStatus(0x00) = %q, want UNKNOWN", got)
+	}
+}
+
+func TestIsEmmcBlockName(t *testing.T) {
+	cases := []struct {
+		name string
+		ok   bool
+	}{
+		{"mmcblk0", true},
+		{"mmcblk1", true},
+		{"mmcblk10", true},
+		{"mmcblk0p1", false},
+		{"sda", false},
+		{"mmcblk", false},
+		{"mmcblkA", false},
+	}
+	for _, c := range cases {
+		if got := isEmmcBlockName(c.name); got != c.ok {
+			t.Fatalf("isEmmcBlockName(%q) = %v, want %v", c.name, got, c.ok)
+		}
+	}
+}

agent/emmc_linux.go

@@ -0,0 +1,227 @@
+//go:build linux
+
+package agent
+
+import (
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+
+	"github.com/henrygd/beszel/internal/entities/smart"
+)
+
+// emmcSysfsRoot is a test hook; production value is "/sys".
+var emmcSysfsRoot = "/sys"
+
+type emmcHealth struct {
+	model    string
+	serial   string
+	revision string
+	capacity uint64
+	preEOL   uint8
+	lifeA    uint8
+	lifeB    uint8
+}
+
+func scanEmmcDevices() []*DeviceInfo {
+	blockDir := filepath.Join(emmcSysfsRoot, "class", "block")
+	entries, err := os.ReadDir(blockDir)
+	if err != nil {
+		return nil
+	}
+
+	devices := make([]*DeviceInfo, 0, 2)
+	for _, ent := range entries {
+		name := ent.Name()
+		if !isEmmcBlockName(name) {
+			continue
+		}
+
+		deviceDir := filepath.Join(blockDir, name, "device")
+		if !hasEmmcHealthFiles(deviceDir) {
+			continue
+		}
+
+		devPath := filepath.Join("/dev", name)
+		devices = append(devices, &DeviceInfo{
+			Name:     devPath,
+			Type:     "emmc",
+			InfoName: devPath + " [eMMC]",
+			Protocol: "MMC",
+		})
+	}
+
+	return devices
+}
+
+func (sm *SmartManager) collectEmmcHealth(deviceInfo *DeviceInfo) (bool, error) {
+	if deviceInfo == nil || deviceInfo.Name == "" {
+		return false, nil
+	}
+
+	base := filepath.Base(deviceInfo.Name)
+	if !isEmmcBlockName(base) && !strings.EqualFold(deviceInfo.Type, "emmc") && !strings.EqualFold(deviceInfo.Type, "mmc") {
+		return false, nil
+	}
+
+	health, ok := readEmmcHealth(base)
+	if !ok {
+		return false, nil
+	}
+
+	// Normalize the device type to keep pruning logic stable across refreshes.
+	deviceInfo.Type = "emmc"
+
+	key := health.serial
+	if key == "" {
+		key = filepath.Join("/dev", base)
+	}
+
+	status := emmcSmartStatus(health.preEOL)
+
+	attrs := []*smart.SmartAttribute{
+		{
+			Name:      "PreEOLInfo",
+			RawValue:  uint64(health.preEOL),
+			RawString: emmcPreEOLString(health.preEOL),
+		},
+		{
+			Name:      "DeviceLifeTimeEstA",
+			RawValue:  uint64(health.lifeA),
+			RawString: emmcLifeTimeString(health.lifeA),
+		},
+		{
+			Name:      "DeviceLifeTimeEstB",
+			RawValue:  uint64(health.lifeB),
+			RawString: emmcLifeTimeString(health.lifeB),
+		},
+	}
+
+	sm.Lock()
+	defer sm.Unlock()
+
+	if _, exists := sm.SmartDataMap[key]; !exists {
+		sm.SmartDataMap[key] = &smart.SmartData{}
+	}
+
+	data := sm.SmartDataMap[key]
+	data.ModelName = health.model
+	data.SerialNumber = health.serial
+	data.FirmwareVersion = health.revision
+	data.Capacity = health.capacity
+	data.Temperature = 0
+	data.SmartStatus = status
+	data.DiskName = filepath.Join("/dev", base)
+	data.DiskType = "emmc"
+	data.Attributes = attrs
+
+	return true, nil
+}
+
+func readEmmcHealth(blockName string) (emmcHealth, bool) {
+	var out emmcHealth
+
+	if !isEmmcBlockName(blockName) {
+		return out, false
+	}
+
+	deviceDir := filepath.Join(emmcSysfsRoot, "class", "block", blockName, "device")
+	preEOL, okPre := readHexByteFile(filepath.Join(deviceDir, "pre_eol_info"))
+
+	// Some kernels expose EXT_CSD lifetime via "life_time" (two bytes), others as
+	// separate files. Support both.
+	lifeA, lifeB, okLife := readLifeTime(deviceDir)
+
+	if !okPre && !okLife {
+		return out, false
+	}
+
+	out.preEOL = preEOL
+	out.lifeA = lifeA
+	out.lifeB = lifeB
+
+	out.model = readStringFile(filepath.Join(deviceDir, "name"))
+	out.serial = readStringFile(filepath.Join(deviceDir, "serial"))
+	out.revision = readStringFile(filepath.Join(deviceDir, "prv"))
+
+	if capBytes, ok := readBlockCapacityBytes(blockName); ok {
+		out.capacity = capBytes
+	}
+
+	return out, true
+}
+
+func readLifeTime(deviceDir string) (uint8, uint8, bool) {
+	if content, ok := readStringFileOK(filepath.Join(deviceDir, "life_time")); ok {
+		a, b, ok := parseHexBytePair(content)
+		return a, b, ok
+	}
+
+	a, okA := readHexByteFile(filepath.Join(deviceDir, "device_life_time_est_typ_a"))
+	b, okB := readHexByteFile(filepath.Join(deviceDir, "device_life_time_est_typ_b"))
+	if okA || okB {
+		return a, b, true
+	}
+	return 0, 0, false
+}
+
+func readBlockCapacityBytes(blockName string) (uint64, bool) {
+	sizePath := filepath.Join(emmcSysfsRoot, "class", "block", blockName, "size")
+	lbsPath := filepath.Join(emmcSysfsRoot, "class", "block", blockName, "queue", "logical_block_size")
+
+	sizeStr, ok := readStringFileOK(sizePath)
+	if !ok {
+		return 0, false
+	}
+	sectors, err := strconv.ParseUint(sizeStr, 10, 64)
+	if err != nil || sectors == 0 {
+		return 0, false
+	}
+
+	lbsStr, ok := readStringFileOK(lbsPath)
+	logicalBlockSize := uint64(512)
+	if ok {
+		if parsed, err := strconv.ParseUint(lbsStr, 10, 64); err == nil && parsed > 0 {
+			logicalBlockSize = parsed
+		}
+	}
+
+	return sectors * logicalBlockSize, true
+}
+
+func readHexByteFile(path string) (uint8, bool) {
+	content, ok := readStringFileOK(path)
+	if !ok {
+		return 0, false
+	}
+	b, ok := parseHexOrDecByte(content)
+	return b, ok
+}
+
+func readStringFile(path string) string {
+	content, _ := readStringFileOK(path)
+	return content
+}
+
+func readStringFileOK(path string) (string, bool) {
+	b, err := os.ReadFile(path)
+	if err != nil {
+		return "", false
+	}
+	return strings.TrimSpace(string(b)), true
+}
+
+func hasEmmcHealthFiles(deviceDir string) bool {
+	entries, err := os.ReadDir(deviceDir)
+	if err != nil {
+		return false
+	}
+	for _, ent := range entries {
+		switch ent.Name() {
+		case "pre_eol_info", "life_time", "device_life_time_est_typ_a", "device_life_time_est_typ_b":
+			return true
+		}
+	}
+	return false
+}

agent/emmc_linux_test.go

@@ -0,0 +1,80 @@
+//go:build linux
+
+package agent
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/henrygd/beszel/internal/entities/smart"
+)
+
+func TestEmmcMockSysfsScanAndCollect(t *testing.T) {
+	tmp := t.TempDir()
+	prev := emmcSysfsRoot
+	emmcSysfsRoot = tmp
+	t.Cleanup(func() { emmcSysfsRoot = prev })
+
+	// Fake: /sys/class/block/mmcblk0
+	mmcDeviceDir := filepath.Join(tmp, "class", "block", "mmcblk0", "device")
+	mmcQueueDir := filepath.Join(tmp, "class", "block", "mmcblk0", "queue")
+	if err := os.MkdirAll(mmcDeviceDir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.MkdirAll(mmcQueueDir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+
+	write := func(path, content string) {
+		t.Helper()
+		if err := os.WriteFile(path, []byte(content), 0o644); err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	write(filepath.Join(mmcDeviceDir, "pre_eol_info"), "0x02\n")
+	write(filepath.Join(mmcDeviceDir, "life_time"), "0x04 0x05\n")
+	write(filepath.Join(mmcDeviceDir, "name"), "H26M52103FMR\n")
+	write(filepath.Join(mmcDeviceDir, "serial"), "01234567\n")
+	write(filepath.Join(mmcDeviceDir, "prv"), "0x08\n")
+	write(filepath.Join(mmcQueueDir, "logical_block_size"), "512\n")
+	write(filepath.Join(tmp, "class", "block", "mmcblk0", "size"), "1024\n") // sectors
+
+	devs := scanEmmcDevices()
+	if len(devs) != 1 {
+		t.Fatalf("scanEmmcDevices() = %d devices, want 1", len(devs))
+	}
+	if devs[0].Name != "/dev/mmcblk0" || devs[0].Type != "emmc" {
+		t.Fatalf("scanEmmcDevices()[0] = %+v, want Name=/dev/mmcblk0 Type=emmc", devs[0])
+	}
+
+	sm := &SmartManager{SmartDataMap: map[string]*smart.SmartData{}}
+	ok, err := sm.collectEmmcHealth(devs[0])
+	if err != nil || !ok {
+		t.Fatalf("collectEmmcHealth() = (ok=%v, err=%v), want (true,nil)", ok, err)
+	}
+	if len(sm.SmartDataMap) != 1 {
+		t.Fatalf("SmartDataMap len=%d, want 1", len(sm.SmartDataMap))
+	}
+	var got *smart.SmartData
+	for _, v := range sm.SmartDataMap {
+		got = v
+		break
+	}
+	if got == nil {
+		t.Fatalf("SmartDataMap value nil")
+	}
+	if got.DiskType != "emmc" || got.DiskName != "/dev/mmcblk0" {
+		t.Fatalf("disk fields = (type=%q name=%q), want (emmc,/dev/mmcblk0)", got.DiskType, got.DiskName)
+	}
+	if got.SmartStatus != "WARNING" {
+		t.Fatalf("SmartStatus=%q, want WARNING", got.SmartStatus)
+	}
+	if got.SerialNumber != "01234567" || got.ModelName == "" || got.Capacity == 0 {
+		t.Fatalf("identity fields = (model=%q serial=%q cap=%d), want non-empty model, serial 01234567, cap>0", got.ModelName, got.SerialNumber, got.Capacity)
+	}
+	if len(got.Attributes) < 3 {
+		t.Fatalf("attributes len=%d, want >= 3", len(got.Attributes))
+	}
+}

agent/emmc_stub.go

@@ -0,0 +1,14 @@
+//go:build !linux
+
+package agent
+
+// Non-Linux builds: eMMC health via sysfs is not available.
+
+func scanEmmcDevices() []*DeviceInfo {
+	return nil
+}
+
+func (sm *SmartManager) collectEmmcHealth(deviceInfo *DeviceInfo) (bool, error) {
+	return false, nil
+}
+

agent/fingerprint.go

@@ -0,0 +1,87 @@
+package agent
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"errors"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/shirou/gopsutil/v4/cpu"
+	"github.com/shirou/gopsutil/v4/host"
+)
+
+const fingerprintFileName = "fingerprint"
+
+// knownBadUUID is a commonly known "product_uuid" that is not unique across systems.
+const knownBadUUID = "03000200-0400-0500-0006-000700080009"
+
+// GetFingerprint returns the agent fingerprint. It first tries to read a saved
+// fingerprint from the data directory. If not found (or dataDir is empty), it
+// generates one from system properties. The hostname and cpuModel parameters are
+// used as fallback material if host.HostID() fails. If either is empty, they
+// are fetched from the system automatically.
+//
+// If a new fingerprint is generated and a dataDir is provided, it is saved.
+func GetFingerprint(dataDir, hostname, cpuModel string) string {
+	if dataDir != "" {
+		if fp, err := readFingerprint(dataDir); err == nil {
+			return fp
+		}
+	}
+	fp := generateFingerprint(hostname, cpuModel)
+	if dataDir != "" {
+		_ = SaveFingerprint(dataDir, fp)
+	}
+	return fp
+}
+
+// generateFingerprint creates a fingerprint from system properties.
+// It tries host.HostID() first, falling back to hostname + cpuModel.
+// If hostname or cpuModel are empty, they are fetched from the system.
+func generateFingerprint(hostname, cpuModel string) string {
+	fingerprint, err := host.HostID()
+	if err != nil || fingerprint == "" || fingerprint == knownBadUUID {
+		if hostname == "" {
+			hostname, _ = os.Hostname()
+		}
+		if cpuModel == "" {
+			if info, err := cpu.Info(); err == nil && len(info) > 0 {
+				cpuModel = info[0].ModelName
+			}
+		}
+		fingerprint = hostname + cpuModel
+	}
+
+	sum := sha256.Sum256([]byte(fingerprint))
+	return hex.EncodeToString(sum[:24])
+}
+
+// readFingerprint reads the saved fingerprint from the data directory.
+func readFingerprint(dataDir string) (string, error) {
+	fp, err := os.ReadFile(filepath.Join(dataDir, fingerprintFileName))
+	if err != nil {
+		return "", err
+	}
+	s := strings.TrimSpace(string(fp))
+	if s == "" {
+		return "", errors.New("fingerprint file is empty")
+	}
+	return s, nil
+}
+
+// SaveFingerprint writes the fingerprint to the data directory.
+func SaveFingerprint(dataDir, fingerprint string) error {
+	return os.WriteFile(filepath.Join(dataDir, fingerprintFileName), []byte(fingerprint), 0o644)
+}
+
+// DeleteFingerprint removes the saved fingerprint file from the data directory.
+// Returns nil if the file does not exist (idempotent).
+func DeleteFingerprint(dataDir string) error {
+	err := os.Remove(filepath.Join(dataDir, fingerprintFileName))
+	if errors.Is(err, os.ErrNotExist) {
+		return nil
+	}
+	return err
+}

agent/fingerprint_test.go

@@ -0,0 +1,102 @@
+//go:build testing
+
+package agent
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGetFingerprint(t *testing.T) {
+	t.Run("reads existing fingerprint from file", func(t *testing.T) {
+		dir := t.TempDir()
+		expected := "abc123def456"
+		err := os.WriteFile(filepath.Join(dir, fingerprintFileName), []byte(expected), 0644)
+		require.NoError(t, err)
+
+		fp := GetFingerprint(dir, "", "")
+		assert.Equal(t, expected, fp)
+	})
+
+	t.Run("trims whitespace from file", func(t *testing.T) {
+		dir := t.TempDir()
+		err := os.WriteFile(filepath.Join(dir, fingerprintFileName), []byte("  abc123  \n"), 0644)
+		require.NoError(t, err)
+
+		fp := GetFingerprint(dir, "", "")
+		assert.Equal(t, "abc123", fp)
+	})
+
+	t.Run("generates fingerprint when file does not exist", func(t *testing.T) {
+		dir := t.TempDir()
+		fp := GetFingerprint(dir, "", "")
+		assert.NotEmpty(t, fp)
+	})
+
+	t.Run("generates fingerprint when dataDir is empty", func(t *testing.T) {
+		fp := GetFingerprint("", "", "")
+		assert.NotEmpty(t, fp)
+	})
+
+	t.Run("generates consistent fingerprint for same inputs", func(t *testing.T) {
+		fp1 := GetFingerprint("", "myhost", "mycpu")
+		fp2 := GetFingerprint("", "myhost", "mycpu")
+		assert.Equal(t, fp1, fp2)
+	})
+
+	t.Run("prefers saved fingerprint over generated", func(t *testing.T) {
+		dir := t.TempDir()
+		require.NoError(t, SaveFingerprint(dir, "saved-fp"))
+
+		fp := GetFingerprint(dir, "anyhost", "anycpu")
+		assert.Equal(t, "saved-fp", fp)
+	})
+}
+
+func TestSaveFingerprint(t *testing.T) {
+	t.Run("saves fingerprint to file", func(t *testing.T) {
+		dir := t.TempDir()
+		err := SaveFingerprint(dir, "abc123")
+		require.NoError(t, err)
+
+		content, err := os.ReadFile(filepath.Join(dir, fingerprintFileName))
+		require.NoError(t, err)
+		assert.Equal(t, "abc123", string(content))
+	})
+
+	t.Run("overwrites existing fingerprint", func(t *testing.T) {
+		dir := t.TempDir()
+		require.NoError(t, SaveFingerprint(dir, "old"))
+		require.NoError(t, SaveFingerprint(dir, "new"))
+
+		content, err := os.ReadFile(filepath.Join(dir, fingerprintFileName))
+		require.NoError(t, err)
+		assert.Equal(t, "new", string(content))
+	})
+}
+
+func TestDeleteFingerprint(t *testing.T) {
+	t.Run("deletes existing fingerprint", func(t *testing.T) {
+		dir := t.TempDir()
+		fp := filepath.Join(dir, fingerprintFileName)
+		err := os.WriteFile(fp, []byte("abc123"), 0644)
+		require.NoError(t, err)
+
+		err = DeleteFingerprint(dir)
+		require.NoError(t, err)
+
+		// Verify file is gone
+		_, err = os.Stat(fp)
+		assert.True(t, os.IsNotExist(err))
+	})
+
+	t.Run("no error when file does not exist", func(t *testing.T) {
+		dir := t.TempDir()
+		err := DeleteFingerprint(dir)
+		assert.NoError(t, err)
+	})
+}

agent/gpu.go

@@ -5,29 +5,29 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
+	"log/slog"
 	"maps"
 	"os/exec"
 	"regexp"
+	"runtime"
 	"strconv"
 	"strings"
 	"sync"
 	"time"
 
 	"github.com/henrygd/beszel/internal/entities/system"
-
-	"golang.org/x/exp/slog"
 )
 
 const (
 	// Commands
-	nvidiaSmiCmd  string = "nvidia-smi"
-	rocmSmiCmd    string = "rocm-smi"
-	tegraStatsCmd string = "tegrastats"
+	nvidiaSmiCmd    string = "nvidia-smi"
+	rocmSmiCmd      string = "rocm-smi"
+	tegraStatsCmd   string = "tegrastats"
+	nvtopCmd        string = "nvtop"
+	powermetricsCmd string = "powermetrics"
+	macmonCmd       string = "macmon"
+	noGPUFoundMsg   string = "no GPU found - see https://beszel.dev/guide/gpu"
 
-	// Polling intervals
-	nvidiaSmiInterval  string        = "4"    // in seconds
-	tegraStatsInterval string        = "3700" // in milliseconds
-	rocmSmiInterval    time.Duration = 4300 * time.Millisecond
 	// Command retry and timeout constants
 	retryWaitTime     time.Duration = 5 * time.Second
 	maxFailureRetries int           = 5
@@ -40,11 +40,7 @@ const (
 // GPUManager manages data collection for GPUs (either Nvidia or AMD)
 type GPUManager struct {
 	sync.Mutex
-	nvidiaSmi     bool
-	rocmSmi       bool
-	tegrastats    bool
-	intelGpuStats bool
-	GpuDataMap    map[string]*system.GPUData
+	GpuDataMap map[string]*system.GPUData
 	// lastAvgData stores the last calculated averages for each GPU
 	// Used when a collection happens before new data arrives (Count == 0)
 	lastAvgData map[string]system.GPUData
@@ -85,6 +81,58 @@ type gpuCollector struct {
 
 var errNoValidData = fmt.Errorf("no valid GPU data found") // Error for missing data
 
+// collectorSource identifies a selectable GPU collector in GPU_COLLECTOR.
+type collectorSource string
+
+const (
+	collectorSourceNVTop        collectorSource = collectorSource(nvtopCmd)
+	collectorSourceNVML         collectorSource = "nvml"
+	collectorSourceNvidiaSMI    collectorSource = collectorSource(nvidiaSmiCmd)
+	collectorSourceIntelGpuTop  collectorSource = collectorSource(intelGpuStatsCmd)
+	collectorSourceAmdSysfs     collectorSource = "amd_sysfs"
+	collectorSourceRocmSMI      collectorSource = collectorSource(rocmSmiCmd)
+	collectorSourceMacmon       collectorSource = collectorSource(macmonCmd)
+	collectorSourcePowermetrics collectorSource = collectorSource(powermetricsCmd)
+	collectorGroupNvidia        string          = "nvidia"
+	collectorGroupIntel         string          = "intel"
+	collectorGroupAmd           string          = "amd"
+	collectorGroupApple         string          = "apple"
+)
+
+func isValidCollectorSource(source collectorSource) bool {
+	switch source {
+	case collectorSourceNVTop,
+		collectorSourceNVML,
+		collectorSourceNvidiaSMI,
+		collectorSourceIntelGpuTop,
+		collectorSourceAmdSysfs,
+		collectorSourceRocmSMI,
+		collectorSourceMacmon,
+		collectorSourcePowermetrics:
+		return true
+	}
+	return false
+}
+
+// gpuCapabilities describes detected GPU tooling and sysfs support on the host.
+type gpuCapabilities struct {
+	hasNvidiaSmi    bool
+	hasRocmSmi      bool
+	hasAmdSysfs     bool
+	hasTegrastats   bool
+	hasIntelGpuTop  bool
+	hasNvtop        bool
+	hasMacmon       bool
+	hasPowermetrics bool
+}
+
+type collectorDefinition struct {
+	group              string
+	available          bool
+	start              func(onFailure func()) bool
+	deprecationWarning string
+}
+
 // starts and manages the ongoing collection of GPU data for the specified GPU management utility
 func (c *gpuCollector) start() {
 	for {
@@ -136,10 +184,10 @@ func (gm *GPUManager) getJetsonParser() func(output []byte) bool {
 	// use closure to avoid recompiling the regex
 	ramPattern := regexp.MustCompile(`RAM (\d+)/(\d+)MB`)
 	gr3dPattern := regexp.MustCompile(`GR3D_FREQ (\d+)%`)
-	tempPattern := regexp.MustCompile(`tj@(\d+\.?\d*)C`)
+	tempPattern := regexp.MustCompile(`(?:tj|GPU)@(\d+\.?\d*)C`)
 	// Orin Nano / NX do not have GPU specific power monitor
 	// TODO: Maybe use VDD_IN for Nano / NX and add a total system power chart
-	powerPattern := regexp.MustCompile(`(GPU_SOC|CPU_GPU_CV) (\d+)mW`)
+	powerPattern := regexp.MustCompile(`(GPU_SOC|CPU_GPU_CV)\s+(\d+)mW|VDD_SYS_GPU\s+(\d+)/\d+`)
 
 	// jetson devices have only one gpu so we'll just initialize here
 	gpuData := &system.GPUData{Name: "GPU"}
@@ -168,7 +216,13 @@ func (gm *GPUManager) getJetsonParser() func(output []byte) bool {
 		// Parse power usage
 		powerMatches := powerPattern.FindSubmatch(output)
 		if powerMatches != nil {
-			power, _ := strconv.ParseFloat(string(powerMatches[2]), 64)
+			// powerMatches[2] is the "(GPU_SOC|CPU_GPU_CV) <N>mW" capture
+			// powerMatches[3] is the "VDD_SYS_GPU <N>/<N>" capture
+			powerStr := string(powerMatches[2])
+			if powerStr == "" {
+				powerStr = string(powerMatches[3])
+			}
+			power, _ := strconv.ParseFloat(powerStr, 64)
 			gpuData.Power += power / milliwattsInAWatt
 		}
 		gpuData.Count++
@@ -231,10 +285,11 @@ func (gm *GPUManager) parseAmdData(output []byte) bool {
 		totalMemory, _ := strconv.ParseFloat(v.MemoryTotal, 64)
 		usage, _ := strconv.ParseFloat(v.Usage, 64)
 
-		if _, ok := gm.GpuDataMap[v.ID]; !ok {
-			gm.GpuDataMap[v.ID] = &system.GPUData{Name: v.Name}
+		id := v.ID
+		if _, ok := gm.GpuDataMap[id]; !ok {
+			gm.GpuDataMap[id] = &system.GPUData{Name: v.Name}
 		}
-		gpu := gm.GpuDataMap[v.ID]
+		gpu := gm.GpuDataMap[id]
 		gpu.Temperature, _ = strconv.ParseFloat(v.Temperature, 64)
 		gpu.MemoryUsed = bytesToMegabytes(memoryUsage)
 		gpu.MemoryTotal = bytesToMegabytes(totalMemory)
@@ -297,8 +352,13 @@ func (gm *GPUManager) calculateGPUAverage(id string, gpu *system.GPUData, cacheK
 	currentCount := uint32(gpu.Count)
 	deltaCount := gm.calculateDeltaCount(currentCount, lastSnapshot)
 
-	// If no new data arrived, use last known average
+	// If no new data arrived
 	if deltaCount == 0 {
+		// If GPU appears suspended (instantaneous values are 0), return zero values
+		// Otherwise return last known average for temporary collection gaps
+		if gpu.Temperature == 0 && gpu.MemoryUsed == 0 {
+			return system.GPUData{Name: gpu.Name}
+		}
 		return gm.lastAvgData[id] // zero value if not found
 	}
 
@@ -378,81 +438,292 @@ func (gm *GPUManager) storeSnapshot(id string, gpu *system.GPUData, cacheKey uin
 	gm.lastSnapshots[cacheKey][id] = snapshot
 }
 
-// detectGPUs checks for the presence of GPU management tools (nvidia-smi, rocm-smi, tegrastats)
-// in the system path. It sets the corresponding flags in the GPUManager struct if any of these
-// tools are found. If none of the tools are found, it returns an error indicating that no GPU
-// management tools are available.
-func (gm *GPUManager) detectGPUs() error {
+// discoverGpuCapabilities checks for available GPU tooling and sysfs support.
+// It only reports capability presence and does not apply policy decisions.
+func (gm *GPUManager) discoverGpuCapabilities() gpuCapabilities {
+	caps := gpuCapabilities{
+		hasAmdSysfs: gm.hasAmdSysfs(),
+	}
 	if _, err := exec.LookPath(nvidiaSmiCmd); err == nil {
-		gm.nvidiaSmi = true
+		caps.hasNvidiaSmi = true
 	}
 	if _, err := exec.LookPath(rocmSmiCmd); err == nil {
-		gm.rocmSmi = true
+		caps.hasRocmSmi = true
 	}
 	if _, err := exec.LookPath(tegraStatsCmd); err == nil {
-		gm.tegrastats = true
-		gm.nvidiaSmi = false
+		caps.hasTegrastats = true
 	}
 	if _, err := exec.LookPath(intelGpuStatsCmd); err == nil {
-		gm.intelGpuStats = true
+		caps.hasIntelGpuTop = true
 	}
-	if gm.nvidiaSmi || gm.rocmSmi || gm.tegrastats || gm.intelGpuStats {
-		return nil
+	if _, err := exec.LookPath(nvtopCmd); err == nil {
+		caps.hasNvtop = true
 	}
-	return fmt.Errorf("no GPU found - install nvidia-smi, rocm-smi, tegrastats, or intel_gpu_top")
+	if runtime.GOOS == "darwin" {
+		if _, err := exec.LookPath(macmonCmd); err == nil {
+			caps.hasMacmon = true
+		}
+		if _, err := exec.LookPath(powermetricsCmd); err == nil {
+			caps.hasPowermetrics = true
+		}
+	}
+	return caps
 }
 
-// startCollector starts the appropriate GPU data collector based on the command
-func (gm *GPUManager) startCollector(command string) {
-	collector := gpuCollector{
-		name:    command,
-		bufSize: 10 * 1024,
-	}
-	switch command {
-	case intelGpuStatsCmd:
-		go func() {
-			failures := 0
-			for {
-				if err := gm.collectIntelStats(); err != nil {
-					failures++
-					if failures > maxFailureRetries {
-						break
-					}
-					slog.Warn("Error collecting Intel GPU data; see https://beszel.dev/guide/gpu", "err", err)
-					time.Sleep(retryWaitTime)
-					continue
+func hasAnyGpuCollector(caps gpuCapabilities) bool {
+	return caps.hasNvidiaSmi || caps.hasRocmSmi || caps.hasAmdSysfs || caps.hasTegrastats || caps.hasIntelGpuTop || caps.hasNvtop || caps.hasMacmon || caps.hasPowermetrics
+}
+
+func (gm *GPUManager) startIntelCollector() {
+	go func() {
+		failures := 0
+		for {
+			if err := gm.collectIntelStats(); err != nil {
+				failures++
+				if failures > maxFailureRetries {
+					break
 				}
+				slog.Warn("Error collecting Intel GPU data; see https://beszel.dev/guide/gpu", "err", err)
+				time.Sleep(retryWaitTime)
+				continue
 			}
-		}()
-	case nvidiaSmiCmd:
-		collector.cmdArgs = []string{
-			"-l", nvidiaSmiInterval,
+		}
+	}()
+}
+
+func (gm *GPUManager) startNvidiaSmiCollector(intervalSeconds string) {
+	collector := gpuCollector{
+		name:    nvidiaSmiCmd,
+		bufSize: 10 * 1024,
+		cmdArgs: []string{
+			"-l", intervalSeconds,
 			"--query-gpu=index,name,temperature.gpu,memory.used,memory.total,utilization.gpu,power.draw",
 			"--format=csv,noheader,nounits",
-		}
-		collector.parse = gm.parseNvidiaData
-		go collector.start()
-	case tegraStatsCmd:
-		collector.cmdArgs = []string{"--interval", tegraStatsInterval}
-		collector.parse = gm.getJetsonParser()
-		go collector.start()
-	case rocmSmiCmd:
-		collector.cmdArgs = []string{"--showid", "--showtemp", "--showuse", "--showpower", "--showproductname", "--showmeminfo", "vram", "--json"}
-		collector.parse = gm.parseAmdData
-		go func() {
-			failures := 0
-			for {
-				if err := collector.collect(); err != nil {
-					failures++
-					if failures > maxFailureRetries {
-						break
-					}
-					slog.Warn("Error collecting AMD GPU data", "err", err)
-				}
-				time.Sleep(rocmSmiInterval)
-			}
-		}()
+		},
+		parse: gm.parseNvidiaData,
 	}
+	go collector.start()
+}
+
+func (gm *GPUManager) startTegraStatsCollector(intervalMilliseconds string) {
+	collector := gpuCollector{
+		name:    tegraStatsCmd,
+		bufSize: 10 * 1024,
+		cmdArgs: []string{"--interval", intervalMilliseconds},
+		parse:   gm.getJetsonParser(),
+	}
+	go collector.start()
+}
+
+func (gm *GPUManager) startRocmSmiCollector(pollInterval time.Duration) {
+	collector := gpuCollector{
+		name:    rocmSmiCmd,
+		bufSize: 10 * 1024,
+		cmdArgs: []string{"--showid", "--showtemp", "--showuse", "--showpower", "--showproductname", "--showmeminfo", "vram", "--json"},
+		parse:   gm.parseAmdData,
+	}
+	go func() {
+		failures := 0
+		for {
+			if err := collector.collect(); err != nil {
+				failures++
+				if failures > maxFailureRetries {
+					break
+				}
+				slog.Warn("Error collecting AMD GPU data via rocm-smi", "err", err)
+			}
+			time.Sleep(pollInterval)
+		}
+	}()
+}
+
+func (gm *GPUManager) collectorDefinitions(caps gpuCapabilities) map[collectorSource]collectorDefinition {
+	return map[collectorSource]collectorDefinition{
+		collectorSourceNVML: {
+			group:     collectorGroupNvidia,
+			available: caps.hasNvidiaSmi,
+			start: func(_ func()) bool {
+				return gm.startNvmlCollector()
+			},
+		},
+		collectorSourceNvidiaSMI: {
+			group:     collectorGroupNvidia,
+			available: caps.hasNvidiaSmi,
+			start: func(_ func()) bool {
+				gm.startNvidiaSmiCollector("4") // seconds
+				return true
+			},
+		},
+		collectorSourceIntelGpuTop: {
+			group:     collectorGroupIntel,
+			available: caps.hasIntelGpuTop,
+			start: func(_ func()) bool {
+				gm.startIntelCollector()
+				return true
+			},
+		},
+		collectorSourceAmdSysfs: {
+			group:     collectorGroupAmd,
+			available: caps.hasAmdSysfs,
+			start: func(_ func()) bool {
+				return gm.startAmdSysfsCollector()
+			},
+		},
+		collectorSourceRocmSMI: {
+			group:              collectorGroupAmd,
+			available:          caps.hasRocmSmi,
+			deprecationWarning: "rocm-smi is deprecated and may be removed in a future release",
+			start: func(_ func()) bool {
+				gm.startRocmSmiCollector(4300 * time.Millisecond)
+				return true
+			},
+		},
+		collectorSourceNVTop: {
+			available: caps.hasNvtop,
+			start: func(onFailure func()) bool {
+				gm.startNvtopCollector("30", onFailure) // tens of milliseconds
+				return true
+			},
+		},
+		collectorSourceMacmon: {
+			group:     collectorGroupApple,
+			available: caps.hasMacmon,
+			start: func(_ func()) bool {
+				gm.startMacmonCollector()
+				return true
+			},
+		},
+		collectorSourcePowermetrics: {
+			group:     collectorGroupApple,
+			available: caps.hasPowermetrics,
+			start: func(_ func()) bool {
+				gm.startPowermetricsCollector()
+				return true
+			},
+		},
+	}
+}
+
+// parseCollectorPriority parses GPU_COLLECTOR and returns valid ordered entries.
+func parseCollectorPriority(value string) []collectorSource {
+	parts := strings.Split(value, ",")
+	priorities := make([]collectorSource, 0, len(parts))
+	for _, raw := range parts {
+		name := collectorSource(strings.TrimSpace(strings.ToLower(raw)))
+		if !isValidCollectorSource(name) {
+			if name != "" {
+				slog.Warn("Ignoring unknown GPU collector", "collector", name)
+			}
+			continue
+		}
+		priorities = append(priorities, name)
+	}
+	return priorities
+}
+
+// startNvmlCollector initializes NVML and starts its polling loop.
+func (gm *GPUManager) startNvmlCollector() bool {
+	collector := &nvmlCollector{gm: gm}
+	if err := collector.init(); err != nil {
+		slog.Warn("Failed to initialize NVML", "err", err)
+		return false
+	}
+	go collector.start()
+	return true
+}
+
+// startAmdSysfsCollector starts AMD GPU collection via sysfs.
+func (gm *GPUManager) startAmdSysfsCollector() bool {
+	go func() {
+		if err := gm.collectAmdStats(); err != nil {
+			slog.Warn("Error collecting AMD GPU data via sysfs", "err", err)
+		}
+	}()
+	return true
+}
+
+// startCollectorsByPriority starts collectors in order with one source per vendor group.
+func (gm *GPUManager) startCollectorsByPriority(priorities []collectorSource, caps gpuCapabilities) int {
+	definitions := gm.collectorDefinitions(caps)
+	selectedGroups := make(map[string]bool, 3)
+	started := 0
+	for i, source := range priorities {
+		definition, ok := definitions[source]
+		if !ok || !definition.available {
+			continue
+		}
+		// nvtop is not a vendor-specific collector, so should only be used if no other collectors are selected or it is first in GPU_COLLECTOR.
+		if source == collectorSourceNVTop {
+			if len(selectedGroups) > 0 {
+				slog.Warn("Skipping nvtop because other collectors are selected")
+				continue
+			}
+			// if nvtop fails, fall back to remaining collectors.
+			remaining := append([]collectorSource(nil), priorities[i+1:]...)
+			if definition.start(func() {
+				gm.startCollectorsByPriority(remaining, caps)
+			}) {
+				started++
+				return started
+			}
+		}
+		group := definition.group
+		if group == "" || selectedGroups[group] {
+			continue
+		}
+		if definition.deprecationWarning != "" {
+			slog.Warn(definition.deprecationWarning)
+		}
+		if definition.start(nil) {
+			selectedGroups[group] = true
+			started++
+		}
+	}
+	return started
+}
+
+// resolveLegacyCollectorPriority builds the default collector order when GPU_COLLECTOR is unset.
+func (gm *GPUManager) resolveLegacyCollectorPriority(caps gpuCapabilities) []collectorSource {
+	priorities := make([]collectorSource, 0, 4)
+
+	if caps.hasNvidiaSmi && !caps.hasTegrastats {
+		if nvml, _ := GetEnv("NVML"); nvml == "true" {
+			priorities = append(priorities, collectorSourceNVML, collectorSourceNvidiaSMI)
+		} else {
+			priorities = append(priorities, collectorSourceNvidiaSMI)
+		}
+	}
+
+	if caps.hasRocmSmi {
+		if val, _ := GetEnv("AMD_SYSFS"); val == "true" {
+			priorities = append(priorities, collectorSourceAmdSysfs)
+		} else {
+			priorities = append(priorities, collectorSourceRocmSMI)
+		}
+	} else if caps.hasAmdSysfs {
+		priorities = append(priorities, collectorSourceAmdSysfs)
+	}
+
+	if caps.hasIntelGpuTop {
+		priorities = append(priorities, collectorSourceIntelGpuTop)
+	}
+
+	// Apple collectors are currently opt-in only for testing.
+	// Enable them with GPU_COLLECTOR=macmon or GPU_COLLECTOR=powermetrics.
+	// TODO: uncomment below when Apple collectors are confirmed to be working.
+	//
+	// Prefer macmon on macOS (no sudo). Fall back to powermetrics if present.
+	// if caps.hasMacmon {
+	// 	priorities = append(priorities, collectorSourceMacmon)
+	// } else if caps.hasPowermetrics {
+	// 	priorities = append(priorities, collectorSourcePowermetrics)
+	// }
+
+	// Keep nvtop as a last resort only when no vendor collector exists.
+	if len(priorities) == 0 && caps.hasNvtop {
+		priorities = append(priorities, collectorSourceNVTop)
+	}
+	return priorities
 }
 
 // NewGPUManager creates and initializes a new GPUManager
@@ -461,22 +732,30 @@ func NewGPUManager() (*GPUManager, error) {
 		return nil, nil
 	}
 	var gm GPUManager
-	if err := gm.detectGPUs(); err != nil {
-		return nil, err
+	caps := gm.discoverGpuCapabilities()
+	if !hasAnyGpuCollector(caps) {
+		return nil, fmt.Errorf(noGPUFoundMsg)
 	}
 	gm.GpuDataMap = make(map[string]*system.GPUData)
 
-	if gm.nvidiaSmi {
-		gm.startCollector(nvidiaSmiCmd)
+	// Jetson devices should always use tegrastats (ignore GPU_COLLECTOR).
+	if caps.hasTegrastats {
+		gm.startTegraStatsCollector("3700")
+		return &gm, nil
 	}
-	if gm.rocmSmi {
-		gm.startCollector(rocmSmiCmd)
+
+	// if GPU_COLLECTOR is set, start user-defined collectors.
+	if collectorConfig, ok := GetEnv("GPU_COLLECTOR"); ok && strings.TrimSpace(collectorConfig) != "" {
+		priorities := parseCollectorPriority(collectorConfig)
+		if gm.startCollectorsByPriority(priorities, caps) == 0 {
+			return nil, fmt.Errorf("no configured GPU collectors are available")
+		}
+		return &gm, nil
 	}
-	if gm.tegrastats {
-		gm.startCollector(tegraStatsCmd)
-	}
-	if gm.intelGpuStats {
-		gm.startCollector(intelGpuStatsCmd)
+
+	// auto-detect and start collectors when GPU_COLLECTOR is unset.
+	if gm.startCollectorsByPriority(gm.resolveLegacyCollectorPriority(caps), caps) == 0 {
+		return nil, fmt.Errorf(noGPUFoundMsg)
 	}
 
 	return &gm, nil

agent/gpu_amd_linux.go

@@ -0,0 +1,302 @@
+//go:build linux
+
+package agent
+
+import (
+	"bufio"
+	"fmt"
+	"log/slog"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/henrygd/beszel/internal/entities/system"
+)
+
+var amdgpuNameCache = struct {
+	sync.RWMutex
+	hits   map[string]string
+	misses map[string]struct{}
+}{
+	hits:   make(map[string]string),
+	misses: make(map[string]struct{}),
+}
+
+// hasAmdSysfs returns true if any AMD GPU sysfs nodes are found
+func (gm *GPUManager) hasAmdSysfs() bool {
+	cards, err := filepath.Glob("/sys/class/drm/card*/device/vendor")
+	if err != nil {
+		return false
+	}
+	for _, vendorPath := range cards {
+		vendor, err := os.ReadFile(vendorPath)
+		if err == nil && strings.TrimSpace(string(vendor)) == "0x1002" {
+			return true
+		}
+	}
+	return false
+}
+
+// collectAmdStats collects AMD GPU metrics directly from sysfs to avoid the overhead of rocm-smi
+func (gm *GPUManager) collectAmdStats() error {
+	sysfsPollInterval := 3000 * time.Millisecond
+	cards, err := filepath.Glob("/sys/class/drm/card*")
+	if err != nil {
+		return err
+	}
+
+	var amdGpuPaths []string
+	for _, card := range cards {
+		// Ignore symbolic links and non-main card directories
+		if strings.Contains(filepath.Base(card), "-") || !isAmdGpu(card) {
+			continue
+		}
+		amdGpuPaths = append(amdGpuPaths, card)
+	}
+
+	if len(amdGpuPaths) == 0 {
+		return errNoValidData
+	}
+
+	slog.Debug("Using sysfs for AMD GPU data collection")
+
+	failures := 0
+	for {
+		hasData := false
+		for _, cardPath := range amdGpuPaths {
+			if gm.updateAmdGpuData(cardPath) {
+				hasData = true
+			}
+		}
+		if !hasData {
+			failures++
+			if failures > maxFailureRetries {
+				return errNoValidData
+			}
+			slog.Warn("No AMD GPU data from sysfs", "failures", failures)
+			time.Sleep(retryWaitTime)
+			continue
+		}
+		failures = 0
+		time.Sleep(sysfsPollInterval)
+	}
+}
+
+// isAmdGpu checks whether a DRM card path belongs to AMD vendor ID 0x1002.
+func isAmdGpu(cardPath string) bool {
+	vendorPath := filepath.Join(cardPath, "device/vendor")
+	vendor, err := os.ReadFile(vendorPath)
+	if err != nil {
+		return false
+	}
+	return strings.TrimSpace(string(vendor)) == "0x1002"
+}
+
+// updateAmdGpuData reads GPU metrics from sysfs and updates the GPU data map.
+// Returns true if at least some data was successfully read.
+func (gm *GPUManager) updateAmdGpuData(cardPath string) bool {
+	devicePath := filepath.Join(cardPath, "device")
+	id := filepath.Base(cardPath)
+
+	// Read all sysfs values first (no lock needed - these can be slow)
+	usage, usageErr := readSysfsFloat(filepath.Join(devicePath, "gpu_busy_percent"))
+	memUsed, memUsedErr := readSysfsFloat(filepath.Join(devicePath, "mem_info_vram_used"))
+	memTotal, _ := readSysfsFloat(filepath.Join(devicePath, "mem_info_vram_total"))
+	// if gtt is present, add it to the memory used and total (https://github.com/henrygd/beszel/issues/1569#issuecomment-3837640484)
+	if gttUsed, err := readSysfsFloat(filepath.Join(devicePath, "mem_info_gtt_used")); err == nil && gttUsed > 0 {
+		if gttTotal, err := readSysfsFloat(filepath.Join(devicePath, "mem_info_gtt_total")); err == nil {
+			memUsed += gttUsed
+			memTotal += gttTotal
+		}
+	}
+
+	var temp, power float64
+	hwmons, _ := filepath.Glob(filepath.Join(devicePath, "hwmon/hwmon*"))
+	for _, hwmonDir := range hwmons {
+		if t, err := readSysfsFloat(filepath.Join(hwmonDir, "temp1_input")); err == nil {
+			temp = t / 1000.0
+		}
+		if p, err := readSysfsFloat(filepath.Join(hwmonDir, "power1_average")); err == nil {
+			power += p / 1000000.0
+		} else if p, err := readSysfsFloat(filepath.Join(hwmonDir, "power1_input")); err == nil {
+			power += p / 1000000.0
+		}
+	}
+
+	// Check if we got any meaningful data
+	if usageErr != nil && memUsedErr != nil && temp == 0 {
+		return false
+	}
+
+	// Single lock to update all values atomically
+	gm.Lock()
+	defer gm.Unlock()
+
+	gpu, ok := gm.GpuDataMap[id]
+	if !ok {
+		gpu = &system.GPUData{Name: getAmdGpuName(devicePath)}
+		gm.GpuDataMap[id] = gpu
+	}
+
+	if usageErr == nil {
+		gpu.Usage += usage
+	}
+	gpu.MemoryUsed = bytesToMegabytes(memUsed)
+	gpu.MemoryTotal = bytesToMegabytes(memTotal)
+	gpu.Temperature = temp
+	gpu.Power += power
+	gpu.Count++
+	return true
+}
+
+// readSysfsFloat reads and parses a numeric value from a sysfs file.
+func readSysfsFloat(path string) (float64, error) {
+	val, err := os.ReadFile(path)
+	if err != nil {
+		return 0, err
+	}
+	return strconv.ParseFloat(strings.TrimSpace(string(val)), 64)
+}
+
+// normalizeHexID normalizes hex IDs by trimming spaces, lowercasing, and dropping 0x.
+func normalizeHexID(id string) string {
+	return strings.TrimPrefix(strings.ToLower(strings.TrimSpace(id)), "0x")
+}
+
+// cacheKeyForAmdgpu builds the cache key for a device and optional revision.
+func cacheKeyForAmdgpu(deviceID, revisionID string) string {
+	if revisionID != "" {
+		return deviceID + ":" + revisionID
+	}
+	return deviceID
+}
+
+// lookupAmdgpuNameInFile resolves an AMDGPU name from amdgpu.ids by device/revision.
+func lookupAmdgpuNameInFile(deviceID, revisionID, filePath string) (name string, exact bool, found bool) {
+	file, err := os.Open(filePath)
+	if err != nil {
+		return "", false, false
+	}
+	defer file.Close()
+
+	var byDevice string
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		line := strings.TrimSpace(scanner.Text())
+		if line == "" || strings.HasPrefix(line, "#") {
+			continue
+		}
+		parts := strings.SplitN(line, ",", 3)
+		if len(parts) != 3 {
+			continue
+		}
+
+		dev := normalizeHexID(parts[0])
+		rev := normalizeHexID(parts[1])
+		productName := strings.TrimSpace(parts[2])
+		if dev == "" || productName == "" || dev != deviceID {
+			continue
+		}
+		if byDevice == "" {
+			byDevice = productName
+		}
+		if revisionID != "" && rev == revisionID {
+			return productName, true, true
+		}
+	}
+	if byDevice != "" {
+		return byDevice, false, true
+	}
+	return "", false, false
+}
+
+// getCachedAmdgpuName returns cached hit/miss status for the given device/revision.
+func getCachedAmdgpuName(deviceID, revisionID string) (name string, found bool, done bool) {
+	// Build the list of cache keys to check. We always look up the exact device+revision key.
+	// When revisionID is set, we also look up deviceID alone, since the cache may store a
+	// device-only fallback when we couldn't resolve the exact revision.
+	keys := []string{cacheKeyForAmdgpu(deviceID, revisionID)}
+	if revisionID != "" {
+		keys = append(keys, deviceID)
+	}
+
+	knownMisses := 0
+	amdgpuNameCache.RLock()
+	defer amdgpuNameCache.RUnlock()
+	for _, key := range keys {
+		if name, ok := amdgpuNameCache.hits[key]; ok {
+			return name, true, true
+		}
+		if _, ok := amdgpuNameCache.misses[key]; ok {
+			knownMisses++
+		}
+	}
+	// done=true means "don't bother doing slow lookup": we either found a name (above) or
+	// every key we checked was already a known miss, so we've tried before and failed.
+	return "", false, knownMisses == len(keys)
+}
+
+// normalizeAmdgpuName trims standard suffixes from AMDGPU product names.
+func normalizeAmdgpuName(name string) string {
+	for _, suffix := range []string{" Graphics", " Series"} {
+		name = strings.TrimSuffix(name, suffix)
+	}
+	return name
+}
+
+// cacheAmdgpuName stores a resolved AMDGPU name in the lookup cache.
+func cacheAmdgpuName(deviceID, revisionID, name string, exact bool) {
+	name = normalizeAmdgpuName(name)
+	amdgpuNameCache.Lock()
+	defer amdgpuNameCache.Unlock()
+	if exact && revisionID != "" {
+		amdgpuNameCache.hits[cacheKeyForAmdgpu(deviceID, revisionID)] = name
+	}
+	amdgpuNameCache.hits[deviceID] = name
+}
+
+// cacheMissingAmdgpuName records unresolved device/revision lookups.
+func cacheMissingAmdgpuName(deviceID, revisionID string) {
+	amdgpuNameCache.Lock()
+	defer amdgpuNameCache.Unlock()
+	amdgpuNameCache.misses[deviceID] = struct{}{}
+	if revisionID != "" {
+		amdgpuNameCache.misses[cacheKeyForAmdgpu(deviceID, revisionID)] = struct{}{}
+	}
+}
+
+// getAmdGpuName attempts to get a descriptive GPU name.
+// First tries product_name (rarely available), then looks up the PCI device ID.
+// Falls back to showing the raw device ID if not found in the lookup table.
+func getAmdGpuName(devicePath string) string {
+	// Try product_name first (works for some enterprise GPUs)
+	if prod, err := os.ReadFile(filepath.Join(devicePath, "product_name")); err == nil {
+		return strings.TrimSpace(string(prod))
+	}
+
+	// Read PCI device ID and look it up
+	if deviceID, err := os.ReadFile(filepath.Join(devicePath, "device")); err == nil {
+		id := normalizeHexID(string(deviceID))
+		revision := ""
+		if revBytes, revErr := os.ReadFile(filepath.Join(devicePath, "revision")); revErr == nil {
+			revision = normalizeHexID(string(revBytes))
+		}
+
+		if name, found, done := getCachedAmdgpuName(id, revision); found {
+			return name
+		} else if !done {
+			if name, exact, ok := lookupAmdgpuNameInFile(id, revision, "/usr/share/libdrm/amdgpu.ids"); ok {
+				cacheAmdgpuName(id, revision, name, exact)
+				return normalizeAmdgpuName(name)
+			}
+			cacheMissingAmdgpuName(id, revision)
+		}
+
+		return fmt.Sprintf("AMD GPU (%s)", id)
+	}
+
+	return "AMD GPU"
+}

agent/gpu_amd_linux_test.go

@@ -0,0 +1,264 @@
+//go:build linux
+
+package agent
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/henrygd/beszel/internal/entities/system"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestNormalizeHexID(t *testing.T) {
+	tests := []struct {
+		in   string
+		want string
+	}{
+		{"0x1002", "1002"},
+		{"C2", "c2"},
+		{"  15BF  ", "15bf"},
+		{"0x15bf", "15bf"},
+		{"", ""},
+	}
+	for _, tt := range tests {
+		subName := tt.in
+		if subName == "" {
+			subName = "empty_string"
+		}
+		t.Run(subName, func(t *testing.T) {
+			got := normalizeHexID(tt.in)
+			assert.Equal(t, tt.want, got)
+		})
+	}
+}
+
+func TestCacheKeyForAmdgpu(t *testing.T) {
+	tests := []struct {
+		deviceID   string
+		revisionID string
+		want       string
+	}{
+		{"1114", "c2", "1114:c2"},
+		{"15bf", "", "15bf"},
+		{"1506", "c1", "1506:c1"},
+	}
+	for _, tt := range tests {
+		got := cacheKeyForAmdgpu(tt.deviceID, tt.revisionID)
+		assert.Equal(t, tt.want, got)
+	}
+}
+
+func TestReadSysfsFloat(t *testing.T) {
+	dir := t.TempDir()
+
+	validPath := filepath.Join(dir, "val")
+	require.NoError(t, os.WriteFile(validPath, []byte("  42.5  \n"), 0o644))
+	got, err := readSysfsFloat(validPath)
+	require.NoError(t, err)
+	assert.Equal(t, 42.5, got)
+
+	// Integer and scientific
+	sciPath := filepath.Join(dir, "sci")
+	require.NoError(t, os.WriteFile(sciPath, []byte("1e2"), 0o644))
+	got, err = readSysfsFloat(sciPath)
+	require.NoError(t, err)
+	assert.Equal(t, 100.0, got)
+
+	// Missing file
+	_, err = readSysfsFloat(filepath.Join(dir, "missing"))
+	require.Error(t, err)
+
+	// Invalid content
+	badPath := filepath.Join(dir, "bad")
+	require.NoError(t, os.WriteFile(badPath, []byte("not a number"), 0o644))
+	_, err = readSysfsFloat(badPath)
+	require.Error(t, err)
+}
+
+func TestIsAmdGpu(t *testing.T) {
+	dir := t.TempDir()
+	deviceDir := filepath.Join(dir, "device")
+	require.NoError(t, os.MkdirAll(deviceDir, 0o755))
+
+	// AMD vendor 0x1002 -> true
+	require.NoError(t, os.WriteFile(filepath.Join(deviceDir, "vendor"), []byte("0x1002\n"), 0o644))
+	assert.True(t, isAmdGpu(dir), "vendor 0x1002 should be AMD")
+
+	// Non-AMD vendor -> false
+	require.NoError(t, os.WriteFile(filepath.Join(deviceDir, "vendor"), []byte("0x10de\n"), 0o644))
+	assert.False(t, isAmdGpu(dir), "vendor 0x10de should not be AMD")
+
+	// Missing vendor file -> false
+	require.NoError(t, os.Remove(filepath.Join(deviceDir, "vendor")))
+	assert.False(t, isAmdGpu(dir), "missing vendor file should be false")
+}
+
+func TestAmdgpuNameCacheRoundTrip(t *testing.T) {
+	// Cache a name and retrieve it (unique key to avoid affecting other tests)
+	deviceID, revisionID := "cachedev99", "00"
+	cacheAmdgpuName(deviceID, revisionID, "AMD Test GPU 99 Graphics", true)
+
+	name, found, done := getCachedAmdgpuName(deviceID, revisionID)
+	assert.True(t, found)
+	assert.True(t, done)
+	assert.Equal(t, "AMD Test GPU 99", name)
+
+	// Device-only key also stored
+	name2, found2, _ := getCachedAmdgpuName(deviceID, "")
+	assert.True(t, found2)
+	assert.Equal(t, "AMD Test GPU 99", name2)
+
+	// Cache a miss
+	cacheMissingAmdgpuName("missedev99", "ab")
+	_, found3, done3 := getCachedAmdgpuName("missedev99", "ab")
+	assert.False(t, found3)
+	assert.True(t, done3, "done should be true so caller skips file lookup")
+}
+
+func TestUpdateAmdGpuDataWithFakeSysfs(t *testing.T) {
+	tests := []struct {
+		name            string
+		writeGTT        bool
+		wantMemoryUsed  float64
+		wantMemoryTotal float64
+	}{
+		{
+			name:            "sums vram and gtt when gtt is present",
+			writeGTT:        true,
+			wantMemoryUsed:  bytesToMegabytes(1073741824 + 536870912),
+			wantMemoryTotal: bytesToMegabytes(2147483648 + 4294967296),
+		},
+		{
+			name:            "falls back to vram when gtt is missing",
+			writeGTT:        false,
+			wantMemoryUsed:  bytesToMegabytes(1073741824),
+			wantMemoryTotal: bytesToMegabytes(2147483648),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			dir := t.TempDir()
+			cardPath := filepath.Join(dir, "card0")
+			devicePath := filepath.Join(cardPath, "device")
+			hwmonPath := filepath.Join(devicePath, "hwmon", "hwmon0")
+			require.NoError(t, os.MkdirAll(hwmonPath, 0o755))
+
+			write := func(name, content string) {
+				require.NoError(t, os.WriteFile(filepath.Join(devicePath, name), []byte(content), 0o644))
+			}
+			write("vendor", "0x1002")
+			write("device", "0x1506")
+			write("revision", "0xc1")
+			write("gpu_busy_percent", "25")
+			write("mem_info_vram_used", "1073741824")
+			write("mem_info_vram_total", "2147483648")
+			if tt.writeGTT {
+				write("mem_info_gtt_used", "536870912")
+				write("mem_info_gtt_total", "4294967296")
+			}
+			require.NoError(t, os.WriteFile(filepath.Join(hwmonPath, "temp1_input"), []byte("45000"), 0o644))
+			require.NoError(t, os.WriteFile(filepath.Join(hwmonPath, "power1_input"), []byte("20000000"), 0o644))
+
+			// Pre-cache name so getAmdGpuName returns a known value (it uses system amdgpu.ids path)
+			cacheAmdgpuName("1506", "c1", "AMD Radeon 610M Graphics", true)
+
+			gm := &GPUManager{GpuDataMap: make(map[string]*system.GPUData)}
+			ok := gm.updateAmdGpuData(cardPath)
+			require.True(t, ok)
+
+			gpu, ok := gm.GpuDataMap["card0"]
+			require.True(t, ok)
+			assert.Equal(t, "AMD Radeon 610M", gpu.Name)
+			assert.Equal(t, 25.0, gpu.Usage)
+			assert.Equal(t, tt.wantMemoryUsed, gpu.MemoryUsed)
+			assert.Equal(t, tt.wantMemoryTotal, gpu.MemoryTotal)
+			assert.Equal(t, 45.0, gpu.Temperature)
+			assert.Equal(t, 20.0, gpu.Power)
+			assert.Equal(t, 1.0, gpu.Count)
+		})
+	}
+}
+
+func TestLookupAmdgpuNameInFile(t *testing.T) {
+	idsPath := filepath.Join("test-data", "amdgpu.ids")
+
+	tests := []struct {
+		name       string
+		deviceID   string
+		revisionID string
+		wantName   string
+		wantExact  bool
+		wantFound  bool
+	}{
+		{
+			name:       "exact device and revision match",
+			deviceID:   "1114",
+			revisionID: "c2",
+			wantName:   "AMD Radeon 860M Graphics",
+			wantExact:  true,
+			wantFound:  true,
+		},
+		{
+			name:       "exact match 15BF revision 01 returns 760M",
+			deviceID:   "15bf",
+			revisionID: "01",
+			wantName:   "AMD Radeon 760M Graphics",
+			wantExact:  true,
+			wantFound:  true,
+		},
+		{
+			name:       "exact match 15BF revision 00 returns 780M",
+			deviceID:   "15bf",
+			revisionID: "00",
+			wantName:   "AMD Radeon 780M Graphics",
+			wantExact:  true,
+			wantFound:  true,
+		},
+		{
+			name:       "device-only match returns first entry for device",
+			deviceID:   "1506",
+			revisionID: "",
+			wantName:   "AMD Radeon 610M",
+			wantExact:  false,
+			wantFound:  true,
+		},
+		{
+			name:       "unknown device not found",
+			deviceID:   "dead",
+			revisionID: "00",
+			wantName:   "",
+			wantExact:  false,
+			wantFound:  false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			gotName, gotExact, gotFound := lookupAmdgpuNameInFile(tt.deviceID, tt.revisionID, idsPath)
+			assert.Equal(t, tt.wantName, gotName, "name")
+			assert.Equal(t, tt.wantExact, gotExact, "exact")
+			assert.Equal(t, tt.wantFound, gotFound, "found")
+		})
+	}
+}
+
+func TestGetAmdGpuNameFromIdsFile(t *testing.T) {
+	// Test that getAmdGpuName resolves a name when we can't inject the ids path.
+	// We only verify behavior when product_name is missing and device/revision
+	// would be read from sysfs; the actual lookup uses /usr/share/libdrm/amdgpu.ids.
+	// So this test focuses on normalizeAmdgpuName and that lookupAmdgpuNameInFile
+	// returns the expected name for our test-data file.
+	idsPath := filepath.Join("test-data", "amdgpu.ids")
+	name, exact, found := lookupAmdgpuNameInFile("1435", "ae", idsPath)
+	require.True(t, found)
+	require.True(t, exact)
+	assert.Equal(t, "AMD Custom GPU 0932", name)
+	assert.Equal(t, "AMD Custom GPU 0932", normalizeAmdgpuName(name))
+
+	// " Graphics" suffix is trimmed by normalizeAmdgpuName
+	name2 := "AMD Radeon 860M Graphics"
+	assert.Equal(t, "AMD Radeon 860M", normalizeAmdgpuName(name2))
+}

agent/gpu_amd_unsupported.go

@@ -0,0 +1,15 @@
+//go:build !linux
+
+package agent
+
+import (
+	"errors"
+)
+
+func (gm *GPUManager) hasAmdSysfs() bool {
+	return false
+}
+
+func (gm *GPUManager) collectAmdStats() error {
+	return errors.ErrUnsupported
+}

agent/gpu_darwin.go

@@ -0,0 +1,252 @@
+//go:build darwin
+
+package agent
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/json"
+	"io"
+	"log/slog"
+	"os/exec"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/henrygd/beszel/internal/entities/system"
+)
+
+const (
+	// powermetricsSampleIntervalMs is the sampling interval passed to powermetrics (-i).
+	powermetricsSampleIntervalMs = 500
+	// powermetricsPollInterval is how often we run powermetrics to collect a new sample.
+	powermetricsPollInterval = 2 * time.Second
+	// macmonIntervalMs is the sampling interval passed to macmon pipe (-i), in milliseconds.
+	macmonIntervalMs = 2500
+)
+
+const appleGPUID = "0"
+
+// startPowermetricsCollector runs powermetrics --samplers gpu_power in a loop and updates
+// GPU usage and power. Requires root (sudo) on macOS. A single logical GPU is reported as id "0".
+func (gm *GPUManager) startPowermetricsCollector() {
+	// Ensure single GPU entry for Apple GPU
+	if _, ok := gm.GpuDataMap[appleGPUID]; !ok {
+		gm.GpuDataMap[appleGPUID] = &system.GPUData{Name: "Apple GPU"}
+	}
+
+	go func() {
+		failures := 0
+		for {
+			if err := gm.collectPowermetrics(); err != nil {
+				failures++
+				if failures > maxFailureRetries {
+					slog.Warn("powermetrics GPU collector failed repeatedly, stopping", "err", err)
+					break
+				}
+				slog.Warn("Error collecting macOS GPU data via powermetrics (may require sudo)", "err", err)
+				time.Sleep(retryWaitTime)
+				continue
+			}
+			failures = 0
+			time.Sleep(powermetricsPollInterval)
+		}
+	}()
+}
+
+// collectPowermetrics runs powermetrics once and parses GPU usage and power from its output.
+func (gm *GPUManager) collectPowermetrics() error {
+	interval := strconv.Itoa(powermetricsSampleIntervalMs)
+	cmd := exec.Command(powermetricsCmd, "--samplers", "gpu_power", "-i", interval, "-n", "1")
+	cmd.Stderr = nil
+	out, err := cmd.Output()
+	if err != nil {
+		return err
+	}
+	if !gm.parsePowermetricsData(out) {
+		return errNoValidData
+	}
+	return nil
+}
+
+// parsePowermetricsData parses powermetrics gpu_power output and updates GpuDataMap["0"].
+// Example output:
+//
+//	**** GPU usage ****
+//	GPU HW active frequency: 444 MHz
+//	GPU HW active residency:   0.97% (444 MHz: .97% ...
+//	GPU idle residency:  99.03%
+//	GPU Power: 4 mW
+func (gm *GPUManager) parsePowermetricsData(output []byte) bool {
+	var idleResidency, powerMW float64
+	var gotIdle, gotPower bool
+
+	scanner := bufio.NewScanner(bytes.NewReader(output))
+	for scanner.Scan() {
+		line := strings.TrimSpace(scanner.Text())
+		if strings.HasPrefix(line, "GPU idle residency:") {
+			// "GPU idle residency:  99.03%"
+			fields := strings.Fields(strings.TrimPrefix(line, "GPU idle residency:"))
+			if len(fields) >= 1 {
+				pct := strings.TrimSuffix(fields[0], "%")
+				if v, err := strconv.ParseFloat(pct, 64); err == nil {
+					idleResidency = v
+					gotIdle = true
+				}
+			}
+		} else if strings.HasPrefix(line, "GPU Power:") {
+			// "GPU Power: 4 mW"
+			fields := strings.Fields(strings.TrimPrefix(line, "GPU Power:"))
+			if len(fields) >= 1 {
+				if v, err := strconv.ParseFloat(fields[0], 64); err == nil {
+					powerMW = v
+					gotPower = true
+				}
+			}
+		}
+	}
+	if err := scanner.Err(); err != nil {
+		return false
+	}
+	if !gotIdle && !gotPower {
+		return false
+	}
+
+	gm.Lock()
+	defer gm.Unlock()
+
+	if _, ok := gm.GpuDataMap[appleGPUID]; !ok {
+		gm.GpuDataMap[appleGPUID] = &system.GPUData{Name: "Apple GPU"}
+	}
+	gpu := gm.GpuDataMap[appleGPUID]
+
+	if gotIdle {
+		// Usage = 100 - idle residency (e.g. 100 - 99.03 = 0.97%)
+		gpu.Usage += 100 - idleResidency
+	}
+	if gotPower {
+		// mW -> W
+		gpu.Power += powerMW / milliwattsInAWatt
+	}
+	gpu.Count++
+	return true
+}
+
+// startMacmonCollector runs `macmon pipe` in a loop and parses one JSON object per line.
+// This collector does not require sudo. A single logical GPU is reported as id "0".
+func (gm *GPUManager) startMacmonCollector() {
+	if _, ok := gm.GpuDataMap[appleGPUID]; !ok {
+		gm.GpuDataMap[appleGPUID] = &system.GPUData{Name: "Apple GPU"}
+	}
+
+	go func() {
+		failures := 0
+		for {
+			if err := gm.collectMacmonPipe(); err != nil {
+				failures++
+				if failures > maxFailureRetries {
+					slog.Warn("macmon GPU collector failed repeatedly, stopping", "err", err)
+					break
+				}
+				slog.Warn("Error collecting macOS GPU data via macmon", "err", err)
+				time.Sleep(retryWaitTime)
+				continue
+			}
+			failures = 0
+			// `macmon pipe` is long-running; if it returns, wait a bit before restarting.
+			time.Sleep(retryWaitTime)
+		}
+	}()
+}
+
+type macmonTemp struct {
+	GPUTempAvg float64 `json:"gpu_temp_avg"`
+}
+
+type macmonSample struct {
+	GPUPower    float64    `json:"gpu_power"`     // watts (macmon reports fractional values)
+	GPURAMPower float64    `json:"gpu_ram_power"` // watts
+	GPUUsage    []float64  `json:"gpu_usage"`     // [freq_mhz, usage] where usage is typically 0..1
+	Temp        macmonTemp `json:"temp"`
+}
+
+func (gm *GPUManager) collectMacmonPipe() (err error) {
+	cmd := exec.Command(macmonCmd, "pipe", "-i", strconv.Itoa(macmonIntervalMs))
+	// Avoid blocking if macmon writes to stderr.
+	cmd.Stderr = io.Discard
+	stdout, err := cmd.StdoutPipe()
+	if err != nil {
+		return err
+	}
+	if err := cmd.Start(); err != nil {
+		return err
+	}
+
+	// Ensure we always reap the child to avoid zombies on any return path and
+	// propagate a non-zero exit code if no other error was set.
+	defer func() {
+		_ = stdout.Close()
+		if cmd.ProcessState == nil || !cmd.ProcessState.Exited() {
+			_ = cmd.Process.Kill()
+		}
+		if waitErr := cmd.Wait(); err == nil && waitErr != nil {
+			err = waitErr
+		}
+	}()
+
+	scanner := bufio.NewScanner(stdout)
+	var hadSample bool
+	for scanner.Scan() {
+		line := bytes.TrimSpace(scanner.Bytes())
+		if len(line) == 0 {
+			continue
+		}
+		if gm.parseMacmonLine(line) {
+			hadSample = true
+		}
+	}
+	if scanErr := scanner.Err(); scanErr != nil {
+		return scanErr
+	}
+	if !hadSample {
+		return errNoValidData
+	}
+	return nil
+}
+
+// parseMacmonLine parses a single macmon JSON line and updates Apple GPU metrics.
+func (gm *GPUManager) parseMacmonLine(line []byte) bool {
+	var sample macmonSample
+	if err := json.Unmarshal(line, &sample); err != nil {
+		return false
+	}
+
+	usage := 0.0
+	if len(sample.GPUUsage) >= 2 {
+		usage = sample.GPUUsage[1]
+		// Heuristic: macmon typically reports 0..1; convert to percentage.
+		if usage <= 1.0 {
+			usage *= 100
+		}
+	}
+
+	// Consider the line valid if it contains at least one GPU metric.
+	if usage == 0 && sample.GPUPower == 0 && sample.Temp.GPUTempAvg == 0 {
+		return false
+	}
+
+	gm.Lock()
+	defer gm.Unlock()
+
+	gpu, ok := gm.GpuDataMap[appleGPUID]
+	if !ok {
+		gpu = &system.GPUData{Name: "Apple GPU"}
+		gm.GpuDataMap[appleGPUID] = gpu
+	}
+	gpu.Temperature = sample.Temp.GPUTempAvg
+	gpu.Usage += usage
+	// macmon reports power in watts; include VRAM power if present.
+	gpu.Power += sample.GPUPower + sample.GPURAMPower
+	gpu.Count++
+	return true
+}

agent/gpu_darwin_test.go

@@ -0,0 +1,81 @@
+//go:build darwin
+
+package agent
+
+import (
+	"testing"
+
+	"github.com/henrygd/beszel/internal/entities/system"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestParsePowermetricsData(t *testing.T) {
+	input := `
+Machine model: Mac14,10
+OS version: 25D125
+
+*** Sampled system activity (Sat Feb 14 00:42:06 2026 -0500) (503.05ms elapsed) ***
+
+**** GPU usage ****
+
+GPU HW active frequency: 444 MHz
+GPU HW active residency:   0.97% (444 MHz: .97% 612 MHz:   0% 808 MHz:   0% 968 MHz:   0% 1110 MHz:   0% 1236 MHz:   0% 1338 MHz:   0% 1398 MHz:   0%)
+GPU SW requested state: (P1 : 100% P2 :   0% P3 :   0% P4 :   0% P5 :   0% P6 :   0% P7 :   0% P8 :   0%)
+GPU idle residency:  99.03%
+GPU Power: 4 mW
+`
+	gm := &GPUManager{
+		GpuDataMap: make(map[string]*system.GPUData),
+	}
+	valid := gm.parsePowermetricsData([]byte(input))
+	require.True(t, valid)
+
+	g0, ok := gm.GpuDataMap["0"]
+	require.True(t, ok)
+	assert.Equal(t, "Apple GPU", g0.Name)
+	// Usage = 100 - 99.03 = 0.97
+	assert.InDelta(t, 0.97, g0.Usage, 0.01)
+	// 4 mW -> 0.004 W
+	assert.InDelta(t, 0.004, g0.Power, 0.0001)
+	assert.Equal(t, 1.0, g0.Count)
+}
+
+func TestParsePowermetricsDataPartial(t *testing.T) {
+	// Only power line (e.g. older macOS or different sampler output)
+	input := `
+**** GPU usage ****
+GPU Power: 120 mW
+`
+	gm := &GPUManager{
+		GpuDataMap: make(map[string]*system.GPUData),
+	}
+	valid := gm.parsePowermetricsData([]byte(input))
+	require.True(t, valid)
+
+	g0, ok := gm.GpuDataMap["0"]
+	require.True(t, ok)
+	assert.Equal(t, "Apple GPU", g0.Name)
+	assert.InDelta(t, 0.12, g0.Power, 0.001)
+	assert.Equal(t, 1.0, g0.Count)
+}
+
+func TestParseMacmonLine(t *testing.T) {
+	input := `{"all_power":0.6468324661254883,"ane_power":0.0,"cpu_power":0.6359732151031494,"ecpu_usage":[2061,0.1726151406764984],"gpu_power":0.010859241709113121,"gpu_ram_power":0.000965250947047025,"gpu_usage":[503,0.013633215799927711],"memory":{"ram_total":17179869184,"ram_usage":12322914304,"swap_total":0,"swap_usage":0},"pcpu_usage":[1248,0.11792058497667313],"ram_power":0.14885640144348145,"sys_power":10.4955415725708,"temp":{"cpu_temp_avg":23.041261672973633,"gpu_temp_avg":29.44516944885254},"timestamp":"2026-02-17T19:34:27.942556+00:00"}`
+
+	gm := &GPUManager{
+		GpuDataMap: make(map[string]*system.GPUData),
+	}
+	valid := gm.parseMacmonLine([]byte(input))
+	require.True(t, valid)
+
+	g0, ok := gm.GpuDataMap["0"]
+	require.True(t, ok)
+	assert.Equal(t, "Apple GPU", g0.Name)
+	// macmon reports usage fraction 0..1; expect percent conversion.
+	assert.InDelta(t, 1.3633, g0.Usage, 0.05)
+	// power includes gpu_power + gpu_ram_power
+	assert.InDelta(t, 0.011824, g0.Power, 0.0005)
+	assert.InDelta(t, 29.445, g0.Temperature, 0.01)
+	assert.Equal(t, 1.0, g0.Count)
+}

agent/gpu_darwin_unsupported.go

@@ -0,0 +1,9 @@
+//go:build !darwin
+
+package agent
+
+// startPowermetricsCollector is a no-op on non-darwin platforms; the real implementation is in gpu_darwin.go.
+func (gm *GPUManager) startPowermetricsCollector() {}
+
+// startMacmonCollector is a no-op on non-darwin platforms; the real implementation is in gpu_darwin.go.
+func (gm *GPUManager) startMacmonCollector() {}

agent/gpu_intel.go

@@ -27,10 +27,11 @@ func (gm *GPUManager) updateIntelFromStats(sample *intelGpuStats) bool {
 	defer gm.Unlock()
 
 	// only one gpu for now - cmd doesn't provide all by default
-	gpuData, ok := gm.GpuDataMap["0"]
+	id := "i0" // prefix with i to avoid conflicts with nvidia card ids
+	gpuData, ok := gm.GpuDataMap[id]
 	if !ok {
 		gpuData = &system.GPUData{Name: "GPU", Engines: make(map[string]float64)}
-		gm.GpuDataMap["0"] = gpuData
+		gm.GpuDataMap[id] = gpuData
 	}
 
 	gpuData.Power += sample.PowerGPU

agent/gpu_nvml.go

@@ -0,0 +1,224 @@
+//go:build amd64 && (windows || (linux && glibc))
+
+package agent
+
+import (
+	"fmt"
+	"log/slog"
+	"strings"
+	"time"
+	"unsafe"
+
+	"github.com/ebitengine/purego"
+	"github.com/henrygd/beszel/internal/entities/system"
+)
+
+// NVML constants and types
+const (
+	nvmlSuccess int = 0
+)
+
+type nvmlDevice uintptr
+
+type nvmlReturn int
+
+type nvmlMemoryV1 struct {
+	Total uint64
+	Free  uint64
+	Used  uint64
+}
+
+type nvmlMemoryV2 struct {
+	Version  uint32
+	Total    uint64
+	Reserved uint64
+	Free     uint64
+	Used     uint64
+}
+
+type nvmlUtilization struct {
+	Gpu    uint32
+	Memory uint32
+}
+
+type nvmlPciInfo struct {
+	BusId          [16]byte
+	Domain         uint32
+	Bus            uint32
+	Device         uint32
+	PciDeviceId    uint32
+	PciSubSystemId uint32
+}
+
+// NVML function signatures
+var (
+	nvmlInit                      func() nvmlReturn
+	nvmlShutdown                  func() nvmlReturn
+	nvmlDeviceGetCount            func(count *uint32) nvmlReturn
+	nvmlDeviceGetHandleByIndex    func(index uint32, device *nvmlDevice) nvmlReturn
+	nvmlDeviceGetName             func(device nvmlDevice, name *byte, length uint32) nvmlReturn
+	nvmlDeviceGetMemoryInfo       func(device nvmlDevice, memory uintptr) nvmlReturn
+	nvmlDeviceGetUtilizationRates func(device nvmlDevice, utilization *nvmlUtilization) nvmlReturn
+	nvmlDeviceGetTemperature      func(device nvmlDevice, sensorType int, temp *uint32) nvmlReturn
+	nvmlDeviceGetPowerUsage       func(device nvmlDevice, power *uint32) nvmlReturn
+	nvmlDeviceGetPciInfo          func(device nvmlDevice, pci *nvmlPciInfo) nvmlReturn
+	nvmlErrorString               func(result nvmlReturn) string
+)
+
+type nvmlCollector struct {
+	gm      *GPUManager
+	lib     uintptr
+	devices []nvmlDevice
+	bdfs    []string
+	isV2    bool
+}
+
+func (c *nvmlCollector) init() error {
+	slog.Debug("NVML: Initializing")
+	libPath := getNVMLPath()
+
+	lib, err := openLibrary(libPath)
+	if err != nil {
+		return fmt.Errorf("failed to load %s: %w", libPath, err)
+	}
+	c.lib = lib
+
+	purego.RegisterLibFunc(&nvmlInit, lib, "nvmlInit")
+	purego.RegisterLibFunc(&nvmlShutdown, lib, "nvmlShutdown")
+	purego.RegisterLibFunc(&nvmlDeviceGetCount, lib, "nvmlDeviceGetCount")
+	purego.RegisterLibFunc(&nvmlDeviceGetHandleByIndex, lib, "nvmlDeviceGetHandleByIndex")
+	purego.RegisterLibFunc(&nvmlDeviceGetName, lib, "nvmlDeviceGetName")
+	// Try to get v2 memory info, fallback to v1 if not available
+	if hasSymbol(lib, "nvmlDeviceGetMemoryInfo_v2") {
+		c.isV2 = true
+		purego.RegisterLibFunc(&nvmlDeviceGetMemoryInfo, lib, "nvmlDeviceGetMemoryInfo_v2")
+	} else {
+		purego.RegisterLibFunc(&nvmlDeviceGetMemoryInfo, lib, "nvmlDeviceGetMemoryInfo")
+	}
+	purego.RegisterLibFunc(&nvmlDeviceGetUtilizationRates, lib, "nvmlDeviceGetUtilizationRates")
+	purego.RegisterLibFunc(&nvmlDeviceGetTemperature, lib, "nvmlDeviceGetTemperature")
+	purego.RegisterLibFunc(&nvmlDeviceGetPowerUsage, lib, "nvmlDeviceGetPowerUsage")
+	purego.RegisterLibFunc(&nvmlDeviceGetPciInfo, lib, "nvmlDeviceGetPciInfo")
+	purego.RegisterLibFunc(&nvmlErrorString, lib, "nvmlErrorString")
+
+	if ret := nvmlInit(); ret != nvmlReturn(nvmlSuccess) {
+		return fmt.Errorf("nvmlInit failed: %v", ret)
+	}
+
+	var count uint32
+	if ret := nvmlDeviceGetCount(&count); ret != nvmlReturn(nvmlSuccess) {
+		return fmt.Errorf("nvmlDeviceGetCount failed: %v", ret)
+	}
+
+	for i := uint32(0); i < count; i++ {
+		var device nvmlDevice
+		if ret := nvmlDeviceGetHandleByIndex(i, &device); ret == nvmlReturn(nvmlSuccess) {
+			c.devices = append(c.devices, device)
+			// Get BDF for power state check
+			var pci nvmlPciInfo
+			if ret := nvmlDeviceGetPciInfo(device, &pci); ret == nvmlReturn(nvmlSuccess) {
+				busID := string(pci.BusId[:])
+				if idx := strings.Index(busID, "\x00"); idx != -1 {
+					busID = busID[:idx]
+				}
+				c.bdfs = append(c.bdfs, strings.ToLower(busID))
+			} else {
+				c.bdfs = append(c.bdfs, "")
+			}
+		}
+	}
+
+	return nil
+}
+
+func (c *nvmlCollector) start() {
+	defer nvmlShutdown()
+	ticker := time.Tick(3 * time.Second)
+
+	for range ticker {
+		c.collect()
+	}
+}
+
+func (c *nvmlCollector) collect() {
+	c.gm.Lock()
+	defer c.gm.Unlock()
+
+	for i, device := range c.devices {
+		id := fmt.Sprintf("%d", i)
+		bdf := c.bdfs[i]
+
+		// Update GPUDataMap
+		if _, ok := c.gm.GpuDataMap[id]; !ok {
+			var nameBuf [64]byte
+			if ret := nvmlDeviceGetName(device, &nameBuf[0], 64); ret != nvmlReturn(nvmlSuccess) {
+				continue
+			}
+			name := string(nameBuf[:strings.Index(string(nameBuf[:]), "\x00")])
+			name = strings.TrimPrefix(name, "NVIDIA ")
+			c.gm.GpuDataMap[id] = &system.GPUData{Name: strings.TrimSuffix(name, " Laptop GPU")}
+		}
+		gpu := c.gm.GpuDataMap[id]
+
+		if bdf != "" && !c.isGPUActive(bdf) {
+			slog.Debug("NVML: GPU is suspended, skipping", "bdf", bdf)
+			gpu.Temperature = 0
+			gpu.MemoryUsed = 0
+			continue
+		}
+
+		// Utilization
+		var utilization nvmlUtilization
+		if ret := nvmlDeviceGetUtilizationRates(device, &utilization); ret != nvmlReturn(nvmlSuccess) {
+			slog.Debug("NVML: Utilization failed (GPU likely suspended)", "bdf", bdf, "ret", ret)
+			gpu.Temperature = 0
+			gpu.MemoryUsed = 0
+			continue
+		}
+
+		slog.Debug("NVML: Collecting data for GPU", "bdf", bdf)
+
+		// Temperature
+		var temp uint32
+		nvmlDeviceGetTemperature(device, 0, &temp) // 0 is NVML_TEMPERATURE_GPU
+
+		// Memory: only poll if GPU is active to avoid leaving D3cold state (#1522)
+		if utilization.Gpu > 0 {
+			var usedMem, totalMem uint64
+			if c.isV2 {
+				var memory nvmlMemoryV2
+				memory.Version = 0x02000028 // (2 << 24) | 40 bytes
+				if ret := nvmlDeviceGetMemoryInfo(device, uintptr(unsafe.Pointer(&memory))); ret != nvmlReturn(nvmlSuccess) {
+					slog.Debug("NVML: MemoryInfo_v2 failed", "bdf", bdf, "ret", ret)
+				} else {
+					usedMem = memory.Used
+					totalMem = memory.Total
+				}
+			} else {
+				var memory nvmlMemoryV1
+				if ret := nvmlDeviceGetMemoryInfo(device, uintptr(unsafe.Pointer(&memory))); ret != nvmlReturn(nvmlSuccess) {
+					slog.Debug("NVML: MemoryInfo failed", "bdf", bdf, "ret", ret)
+				} else {
+					usedMem = memory.Used
+					totalMem = memory.Total
+				}
+			}
+			if totalMem > 0 {
+				gpu.MemoryUsed = float64(usedMem) / 1024 / 1024 / mebibytesInAMegabyte
+				gpu.MemoryTotal = float64(totalMem) / 1024 / 1024 / mebibytesInAMegabyte
+			}
+		} else {
+			slog.Debug("NVML: Skipping memory info (utilization=0)", "bdf", bdf)
+		}
+
+		// Power
+		var power uint32
+		nvmlDeviceGetPowerUsage(device, &power)
+
+		gpu.Temperature = float64(temp)
+		gpu.Usage += float64(utilization.Gpu)
+		gpu.Power += float64(power) / 1000.0
+		gpu.Count++
+		slog.Debug("NVML: Collected data", "gpu", gpu)
+	}
+}

agent/gpu_nvml_linux.go

@@ -0,0 +1,57 @@
+//go:build glibc && linux && amd64
+
+package agent
+
+import (
+	"log/slog"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/ebitengine/purego"
+)
+
+func openLibrary(name string) (uintptr, error) {
+	return purego.Dlopen(name, purego.RTLD_NOW|purego.RTLD_GLOBAL)
+}
+
+func getNVMLPath() string {
+	return "libnvidia-ml.so.1"
+}
+
+func hasSymbol(lib uintptr, symbol string) bool {
+	_, err := purego.Dlsym(lib, symbol)
+	return err == nil
+}
+
+func (c *nvmlCollector) isGPUActive(bdf string) bool {
+	// runtime_status
+	statusPath := filepath.Join("/sys/bus/pci/devices", bdf, "power/runtime_status")
+	status, err := os.ReadFile(statusPath)
+	if err != nil {
+		slog.Debug("NVML: Can't read runtime_status", "bdf", bdf, "err", err)
+		return true // Assume active if we can't read status
+	}
+	statusStr := strings.TrimSpace(string(status))
+	if statusStr != "active" && statusStr != "resuming" {
+		slog.Debug("NVML: GPU not active", "bdf", bdf, "status", statusStr)
+		return false
+	}
+
+	// power_state (D0 check)
+	// Find any drm card device power_state
+	pstatePathPattern := filepath.Join("/sys/bus/pci/devices", bdf, "drm/card*/device/power_state")
+	matches, _ := filepath.Glob(pstatePathPattern)
+	if len(matches) > 0 {
+		pstate, err := os.ReadFile(matches[0])
+		if err == nil {
+			pstateStr := strings.TrimSpace(string(pstate))
+			if pstateStr != "D0" {
+				slog.Debug("NVML: GPU not in D0 state", "bdf", bdf, "pstate", pstateStr)
+				return false
+			}
+		}
+	}
+
+	return true
+}

agent/gpu_nvml_unsupported.go

@@ -0,0 +1,15 @@
+//go:build (!linux && !windows) || !amd64 || (linux && !glibc)
+
+package agent
+
+import "fmt"
+
+type nvmlCollector struct {
+	gm *GPUManager
+}
+
+func (c *nvmlCollector) init() error {
+	return fmt.Errorf("nvml not supported on this platform")
+}
+
+func (c *nvmlCollector) start() {}

agent/gpu_nvml_windows.go

@@ -0,0 +1,25 @@
+//go:build windows && amd64
+
+package agent
+
+import (
+	"golang.org/x/sys/windows"
+)
+
+func openLibrary(name string) (uintptr, error) {
+	handle, err := windows.LoadLibrary(name)
+	return uintptr(handle), err
+}
+
+func getNVMLPath() string {
+	return "nvml.dll"
+}
+
+func hasSymbol(lib uintptr, symbol string) bool {
+	_, err := windows.GetProcAddress(windows.Handle(lib), symbol)
+	return err == nil
+}
+
+func (c *nvmlCollector) isGPUActive(bdf string) bool {
+	return true
+}

agent/gpu_nvtop.go

@@ -0,0 +1,159 @@
+package agent
+
+import (
+	"encoding/json"
+	"io"
+	"log/slog"
+	"os/exec"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/henrygd/beszel/internal/entities/system"
+)
+
+type nvtopSnapshot struct {
+	DeviceName string  `json:"device_name"`
+	Temp       *string `json:"temp"`
+	PowerDraw  *string `json:"power_draw"`
+	GpuUtil    *string `json:"gpu_util"`
+	MemTotal   *string `json:"mem_total"`
+	MemUsed    *string `json:"mem_used"`
+}
+
+// parseNvtopNumber parses nvtop numeric strings with units (C/W/%).
+func parseNvtopNumber(raw string) float64 {
+	cleaned := strings.TrimSpace(raw)
+	cleaned = strings.TrimSuffix(cleaned, "C")
+	cleaned = strings.TrimSuffix(cleaned, "W")
+	cleaned = strings.TrimSuffix(cleaned, "%")
+	val, _ := strconv.ParseFloat(cleaned, 64)
+	return val
+}
+
+// parseNvtopData parses a single nvtop JSON snapshot payload.
+func (gm *GPUManager) parseNvtopData(output []byte) bool {
+	var snapshots []nvtopSnapshot
+	if err := json.Unmarshal(output, &snapshots); err != nil || len(snapshots) == 0 {
+		return false
+	}
+	return gm.updateNvtopSnapshots(snapshots)
+}
+
+// updateNvtopSnapshots applies one decoded nvtop snapshot batch to GPU accumulators.
+func (gm *GPUManager) updateNvtopSnapshots(snapshots []nvtopSnapshot) bool {
+	gm.Lock()
+	defer gm.Unlock()
+
+	valid := false
+	usedIDs := make(map[string]struct{}, len(snapshots))
+	for i, sample := range snapshots {
+		if sample.DeviceName == "" {
+			continue
+		}
+		indexID := "n" + strconv.Itoa(i)
+		id := indexID
+
+		// nvtop ordering can change, so prefer reusing an existing slot with matching device name.
+		if existingByIndex, ok := gm.GpuDataMap[indexID]; ok && existingByIndex.Name != "" && existingByIndex.Name != sample.DeviceName {
+			for existingID, gpu := range gm.GpuDataMap {
+				if !strings.HasPrefix(existingID, "n") {
+					continue
+				}
+				if _, taken := usedIDs[existingID]; taken {
+					continue
+				}
+				if gpu.Name == sample.DeviceName {
+					id = existingID
+					break
+				}
+			}
+		}
+
+		if _, ok := gm.GpuDataMap[id]; !ok {
+			gm.GpuDataMap[id] = &system.GPUData{Name: sample.DeviceName}
+		}
+		gpu := gm.GpuDataMap[id]
+		gpu.Name = sample.DeviceName
+
+		if sample.Temp != nil {
+			gpu.Temperature = parseNvtopNumber(*sample.Temp)
+		}
+		if sample.MemUsed != nil {
+			gpu.MemoryUsed = bytesToMegabytes(parseNvtopNumber(*sample.MemUsed))
+		}
+		if sample.MemTotal != nil {
+			gpu.MemoryTotal = bytesToMegabytes(parseNvtopNumber(*sample.MemTotal))
+		}
+		if sample.GpuUtil != nil {
+			gpu.Usage += parseNvtopNumber(*sample.GpuUtil)
+		}
+		if sample.PowerDraw != nil {
+			gpu.Power += parseNvtopNumber(*sample.PowerDraw)
+		}
+		gpu.Count++
+		usedIDs[id] = struct{}{}
+		valid = true
+	}
+	return valid
+}
+
+// collectNvtopStats runs nvtop loop mode and continuously decodes JSON snapshots.
+func (gm *GPUManager) collectNvtopStats(interval string) error {
+	cmd := exec.Command(nvtopCmd, "-lP", "-d", interval)
+	stdout, err := cmd.StdoutPipe()
+	if err != nil {
+		return err
+	}
+	if err := cmd.Start(); err != nil {
+		return err
+	}
+	defer func() {
+		_ = stdout.Close()
+		if cmd.ProcessState == nil || !cmd.ProcessState.Exited() {
+			_ = cmd.Process.Kill()
+		}
+		_ = cmd.Wait()
+	}()
+
+	decoder := json.NewDecoder(stdout)
+	foundValid := false
+	for {
+		var snapshots []nvtopSnapshot
+		if err := decoder.Decode(&snapshots); err != nil {
+			if err == io.EOF {
+				if foundValid {
+					return nil
+				}
+				return errNoValidData
+			}
+			return err
+		}
+		if gm.updateNvtopSnapshots(snapshots) {
+			foundValid = true
+		}
+	}
+}
+
+// startNvtopCollector starts nvtop collection with retry or fallback callback handling.
+func (gm *GPUManager) startNvtopCollector(interval string, onFailure func()) {
+	go func() {
+		failures := 0
+		for {
+			if err := gm.collectNvtopStats(interval); err != nil {
+				if onFailure != nil {
+					slog.Warn("Error collecting GPU data via nvtop", "err", err)
+					onFailure()
+					return
+				}
+				failures++
+				if failures > maxFailureRetries {
+					break
+				}
+				slog.Warn("Error collecting GPU data via nvtop", "err", err)
+				time.Sleep(retryWaitTime)
+				continue
+			}
+		}
+	}()
+}

agent/gpu_test.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package agent
 
@@ -250,6 +249,100 @@ func TestParseAmdData(t *testing.T) {
 	}
 }
 
+func TestParseNvtopData(t *testing.T) {
+	input, err := os.ReadFile("test-data/nvtop.json")
+	require.NoError(t, err)
+
+	gm := &GPUManager{
+		GpuDataMap: make(map[string]*system.GPUData),
+	}
+	valid := gm.parseNvtopData(input)
+	require.True(t, valid)
+
+	g0, ok := gm.GpuDataMap["n0"]
+	require.True(t, ok)
+	assert.Equal(t, "NVIDIA GeForce RTX 3050 Ti Laptop GPU", g0.Name)
+	assert.Equal(t, 48.0, g0.Temperature)
+	assert.Equal(t, 5.0, g0.Usage)
+	assert.Equal(t, 13.0, g0.Power)
+	assert.Equal(t, bytesToMegabytes(349372416), g0.MemoryUsed)
+	assert.Equal(t, bytesToMegabytes(4294967296), g0.MemoryTotal)
+	assert.Equal(t, 1.0, g0.Count)
+
+	g1, ok := gm.GpuDataMap["n1"]
+	require.True(t, ok)
+	assert.Equal(t, "AMD Radeon 680M", g1.Name)
+	assert.Equal(t, 48.0, g1.Temperature)
+	assert.Equal(t, 12.0, g1.Usage)
+	assert.Equal(t, 9.0, g1.Power)
+	assert.Equal(t, bytesToMegabytes(1213784064), g1.MemoryUsed)
+	assert.Equal(t, bytesToMegabytes(16929173504), g1.MemoryTotal)
+	assert.Equal(t, 1.0, g1.Count)
+}
+
+func TestUpdateNvtopSnapshotsKeepsDeviceAssociationWhenOrderChanges(t *testing.T) {
+	strPtr := func(s string) *string { return &s }
+
+	gm := &GPUManager{
+		GpuDataMap: make(map[string]*system.GPUData),
+	}
+
+	firstBatch := []nvtopSnapshot{
+		{
+			DeviceName: "NVIDIA GeForce RTX 3050 Ti Laptop GPU",
+			GpuUtil:    strPtr("20%"),
+			PowerDraw:  strPtr("10W"),
+		},
+		{
+			DeviceName: "AMD Radeon 680M",
+			GpuUtil:    strPtr("30%"),
+			PowerDraw:  strPtr("20W"),
+		},
+	}
+	secondBatchSwapped := []nvtopSnapshot{
+		{
+			DeviceName: "AMD Radeon 680M",
+			GpuUtil:    strPtr("40%"),
+			PowerDraw:  strPtr("25W"),
+		},
+		{
+			DeviceName: "NVIDIA GeForce RTX 3050 Ti Laptop GPU",
+			GpuUtil:    strPtr("50%"),
+			PowerDraw:  strPtr("15W"),
+		},
+	}
+
+	require.True(t, gm.updateNvtopSnapshots(firstBatch))
+	require.True(t, gm.updateNvtopSnapshots(secondBatchSwapped))
+
+	nvidia := gm.GpuDataMap["n0"]
+	require.NotNil(t, nvidia)
+	assert.Equal(t, "NVIDIA GeForce RTX 3050 Ti Laptop GPU", nvidia.Name)
+	assert.Equal(t, 70.0, nvidia.Usage)
+	assert.Equal(t, 25.0, nvidia.Power)
+	assert.Equal(t, 2.0, nvidia.Count)
+
+	amd := gm.GpuDataMap["n1"]
+	require.NotNil(t, amd)
+	assert.Equal(t, "AMD Radeon 680M", amd.Name)
+	assert.Equal(t, 70.0, amd.Usage)
+	assert.Equal(t, 45.0, amd.Power)
+	assert.Equal(t, 2.0, amd.Count)
+}
+
+func TestParseCollectorPriority(t *testing.T) {
+	got := parseCollectorPriority(" nvml, nvidia-smi, intel_gpu_top, amd_sysfs, nvtop, rocm-smi, bad ")
+	want := []collectorSource{
+		collectorSourceNVML,
+		collectorSourceNvidiaSMI,
+		collectorSourceIntelGpuTop,
+		collectorSourceAmdSysfs,
+		collectorSourceNVTop,
+		collectorSourceRocmSMI,
+	}
+	assert.Equal(t, want, got)
+}
+
 func TestParseJetsonData(t *testing.T) {
 	tests := []struct {
 		name        string
@@ -307,6 +400,19 @@ func TestParseJetsonData(t *testing.T) {
 				Count:       1,
 			},
 		},
+		{
+			name:  "orin-style output with GPU@ temp and VDD_SYS_GPU power",
+			input: "RAM 3276/7859MB (lfb 5x4MB) SWAP 1626/12122MB (cached 181MB) CPU [44%@1421,49%@2031,67%@2034,17%@1420,25%@1419,8%@1420] EMC_FREQ 1%@1866 GR3D_FREQ 0%@114 APE 150 MTS fg 1% bg 1% PLL@42.5C MCPU@42.5C PMIC@50C Tboard@38C GPU@39.5C BCPU@42.5C thermal@41.3C Tdiode@39.25C VDD_SYS_GPU 182/182 VDD_SYS_SOC 730/730 VDD_4V0_WIFI 0/0 VDD_IN 5297/5297 VDD_SYS_CPU 1917/1917 VDD_SYS_DDR 1241/1241",
+			wantMetrics: &system.GPUData{
+				Name:        "GPU",
+				MemoryUsed:  3276.0,
+				MemoryTotal: 7859.0,
+				Usage:       0.0,
+				Power:       0.182, // 182mW -> 0.182W
+				Temperature: 39.5,
+				Count:       1,
+			},
+		},
 	}
 
 	for _, tt := range tests {
@@ -825,7 +931,7 @@ func TestInitializeSnapshots(t *testing.T) {
 }
 
 func TestCalculateGPUAverage(t *testing.T) {
-	t.Run("returns zero value when deltaCount is zero", func(t *testing.T) {
+	t.Run("returns cached average when deltaCount is zero", func(t *testing.T) {
 		gm := &GPUManager{
 			lastSnapshots: map[uint16]map[string]*gpuSnapshot{
 				5000: {
@@ -838,9 +944,10 @@ func TestCalculateGPUAverage(t *testing.T) {
 		}
 
 		gpu := &system.GPUData{
-			Count: 10.0, // Same as snapshot, so delta = 0
-			Usage: 100.0,
-			Power: 200.0,
+			Count:       10.0, // Same as snapshot, so delta = 0
+			Usage:       100.0,
+			Power:       200.0,
+			Temperature: 50.0, // Non-zero to avoid "suspended" check
 		}
 
 		result := gm.calculateGPUAverage("0", gpu, 5000)
@@ -849,6 +956,31 @@ func TestCalculateGPUAverage(t *testing.T) {
 		assert.Equal(t, 100.0, result.Power, "Should return cached average")
 	})
 
+	t.Run("returns zero value when GPU is suspended", func(t *testing.T) {
+		gm := &GPUManager{
+			lastSnapshots: map[uint16]map[string]*gpuSnapshot{
+				5000: {
+					"0": {count: 10, usage: 100, power: 200},
+				},
+			},
+			lastAvgData: map[string]system.GPUData{
+				"0": {Usage: 50.0, Power: 100.0},
+			},
+		}
+
+		gpu := &system.GPUData{
+			Name:        "Test GPU",
+			Count:       10.0,
+			Temperature: 0,
+			MemoryUsed:  0,
+		}
+
+		result := gm.calculateGPUAverage("0", gpu, 5000)
+
+		assert.Equal(t, 0.0, result.Usage, "Should return zero usage")
+		assert.Equal(t, 0.0, result.Power, "Should return zero power")
+	})
+
 	t.Run("calculates average for standard GPU", func(t *testing.T) {
 		gm := &GPUManager{
 			lastSnapshots: map[uint16]map[string]*gpuSnapshot{
@@ -948,36 +1080,35 @@ func TestCalculateGPUAverage(t *testing.T) {
 	})
 }
 
-func TestDetectGPUs(t *testing.T) {
+func TestGPUCapabilitiesAndLegacyPriority(t *testing.T) {
 	// Save original PATH
 	origPath := os.Getenv("PATH")
 	defer os.Setenv("PATH", origPath)
-
-	// Set up temp dir with the commands
-	tempDir := t.TempDir()
-	os.Setenv("PATH", tempDir)
+	hasAmdSysfs := (&GPUManager{}).hasAmdSysfs()
 
 	tests := []struct {
 		name           string
-		setupCommands  func() error
+		setupCommands  func(string) error
 		wantNvidiaSmi  bool
 		wantRocmSmi    bool
 		wantTegrastats bool
+		wantNvtop      bool
 		wantErr        bool
 	}{
 		{
 			name: "nvidia-smi not available",
-			setupCommands: func() error {
+			setupCommands: func(_ string) error {
 				return nil
 			},
 			wantNvidiaSmi:  false,
 			wantRocmSmi:    false,
 			wantTegrastats: false,
+			wantNvtop:      false,
 			wantErr:        true,
 		},
 		{
 			name: "nvidia-smi available",
-			setupCommands: func() error {
+			setupCommands: func(tempDir string) error {
 				path := filepath.Join(tempDir, "nvidia-smi")
 				script := `#!/bin/sh
 echo "test"`
@@ -989,29 +1120,14 @@ echo "test"`
 			wantNvidiaSmi:  true,
 			wantTegrastats: false,
 			wantRocmSmi:    false,
+			wantNvtop:      false,
 			wantErr:        false,
 		},
 		{
 			name: "rocm-smi available",
-			setupCommands: func() error {
+			setupCommands: func(tempDir string) error {
 				path := filepath.Join(tempDir, "rocm-smi")
 				script := `#!/bin/sh
-echo "test"`
-				if err := os.WriteFile(path, []byte(script), 0755); err != nil {
-					return err
-				}
-				return nil
-			},
-			wantNvidiaSmi:  true,
-			wantRocmSmi:    true,
-			wantTegrastats: false,
-			wantErr:        false,
-		},
-		{
-			name: "tegrastats available",
-			setupCommands: func() error {
-				path := filepath.Join(tempDir, "tegrastats")
-				script := `#!/bin/sh
 echo "test"`
 				if err := os.WriteFile(path, []byte(script), 0755); err != nil {
 					return err
@@ -1020,12 +1136,47 @@ echo "test"`
 			},
 			wantNvidiaSmi:  false,
 			wantRocmSmi:    true,
+			wantTegrastats: false,
+			wantNvtop:      false,
+			wantErr:        false,
+		},
+		{
+			name: "tegrastats available",
+			setupCommands: func(tempDir string) error {
+				path := filepath.Join(tempDir, "tegrastats")
+				script := `#!/bin/sh
+echo "test"`
+				if err := os.WriteFile(path, []byte(script), 0755); err != nil {
+					return err
+				}
+				return nil
+			},
+			wantNvidiaSmi:  false,
+			wantRocmSmi:    false,
 			wantTegrastats: true,
+			wantNvtop:      false,
+			wantErr:        false,
+		},
+		{
+			name: "nvtop available",
+			setupCommands: func(tempDir string) error {
+				path := filepath.Join(tempDir, "nvtop")
+				script := `#!/bin/sh
+echo "[]"`
+				if err := os.WriteFile(path, []byte(script), 0755); err != nil {
+					return err
+				}
+				return nil
+			},
+			wantNvidiaSmi:  false,
+			wantRocmSmi:    false,
+			wantTegrastats: false,
+			wantNvtop:      true,
 			wantErr:        false,
 		},
 		{
 			name: "no gpu tools available",
-			setupCommands: func() error {
+			setupCommands: func(_ string) error {
 				os.Setenv("PATH", "")
 				return nil
 			},
@@ -1035,29 +1186,53 @@ echo "test"`
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			if err := tt.setupCommands(); err != nil {
+			tempDir := t.TempDir()
+			os.Setenv("PATH", tempDir)
+			if err := tt.setupCommands(tempDir); err != nil {
 				t.Fatal(err)
 			}
 
 			gm := &GPUManager{}
-			err := gm.detectGPUs()
+			caps := gm.discoverGpuCapabilities()
+			var err error
+			if !hasAnyGpuCollector(caps) {
+				err = fmt.Errorf(noGPUFoundMsg)
+			}
+			priorities := gm.resolveLegacyCollectorPriority(caps)
+			hasPriority := func(source collectorSource) bool {
+				for _, s := range priorities {
+					if s == source {
+						return true
+					}
+				}
+				return false
+			}
+			gotNvidiaSmi := hasPriority(collectorSourceNvidiaSMI)
+			gotRocmSmi := hasPriority(collectorSourceRocmSMI)
+			gotTegrastats := caps.hasTegrastats
+			gotNvtop := caps.hasNvtop
 
-			t.Logf("nvidiaSmi: %v, rocmSmi: %v, tegrastats: %v", gm.nvidiaSmi, gm.rocmSmi, gm.tegrastats)
+			t.Logf("nvidiaSmi: %v, rocmSmi: %v, tegrastats: %v", gotNvidiaSmi, gotRocmSmi, gotTegrastats)
 
-			if tt.wantErr {
+			wantErr := tt.wantErr
+			if hasAmdSysfs && (tt.name == "nvidia-smi not available" || tt.name == "no gpu tools available") {
+				wantErr = false
+			}
+			if wantErr {
 				assert.Error(t, err)
 				return
 			}
 
 			assert.NoError(t, err)
-			assert.Equal(t, tt.wantNvidiaSmi, gm.nvidiaSmi)
-			assert.Equal(t, tt.wantRocmSmi, gm.rocmSmi)
-			assert.Equal(t, tt.wantTegrastats, gm.tegrastats)
+			assert.Equal(t, tt.wantNvidiaSmi, gotNvidiaSmi)
+			assert.Equal(t, tt.wantRocmSmi, gotRocmSmi)
+			assert.Equal(t, tt.wantTegrastats, gotTegrastats)
+			assert.Equal(t, tt.wantNvtop, gotNvtop)
 		})
 	}
 }
 
-func TestStartCollector(t *testing.T) {
+func TestCollectorStartHelpers(t *testing.T) {
 	// Save original PATH
 	origPath := os.Getenv("PATH")
 	defer os.Setenv("PATH", origPath)
@@ -1142,6 +1317,27 @@ echo "11-14-2024 22:54:33 RAM 1024/4096MB GR3D_FREQ 80% tj@70C VDD_GPU_SOC 1000m
 				},
 			},
 		},
+		{
+			name:    "nvtop collector",
+			command: "nvtop",
+			setup: func(t *testing.T) error {
+				path := filepath.Join(dir, "nvtop")
+				script := `#!/bin/sh
+echo '[{"device_name":"NVIDIA Test GPU","temp":"52C","power_draw":"31W","gpu_util":"37%","mem_total":"4294967296","mem_used":"536870912","processes":[]}]'`
+				if err := os.WriteFile(path, []byte(script), 0755); err != nil {
+					return err
+				}
+				return nil
+			},
+			validate: func(t *testing.T, gm *GPUManager) {
+				gpu, exists := gm.GpuDataMap["n0"]
+				assert.True(t, exists)
+				if exists {
+					assert.Equal(t, "NVIDIA Test GPU", gpu.Name)
+					assert.Equal(t, 52.0, gpu.Temperature)
+				}
+			},
+		},
 	}
 
 	for _, tt := range tests {
@@ -1154,13 +1350,157 @@ echo "11-14-2024 22:54:33 RAM 1024/4096MB GR3D_FREQ 80% tj@70C VDD_GPU_SOC 1000m
 					GpuDataMap: make(map[string]*system.GPUData),
 				}
 			}
-			tt.gm.startCollector(tt.command)
+			switch tt.command {
+			case nvidiaSmiCmd:
+				tt.gm.startNvidiaSmiCollector("4")
+			case rocmSmiCmd:
+				tt.gm.startRocmSmiCollector(4300 * time.Millisecond)
+			case tegraStatsCmd:
+				tt.gm.startTegraStatsCollector("3700")
+			case nvtopCmd:
+				tt.gm.startNvtopCollector("30", nil)
+			default:
+				t.Fatalf("unknown test command %q", tt.command)
+			}
 			time.Sleep(50 * time.Millisecond) // Give collector time to run
 			tt.validate(t, tt.gm)
 		})
 	}
 }
 
+func TestNewGPUManagerPriorityNvtopFallback(t *testing.T) {
+	origPath := os.Getenv("PATH")
+	defer os.Setenv("PATH", origPath)
+
+	dir := t.TempDir()
+	os.Setenv("PATH", dir)
+	t.Setenv("BESZEL_AGENT_GPU_COLLECTOR", "nvtop,nvidia-smi")
+
+	nvtopPath := filepath.Join(dir, "nvtop")
+	nvtopScript := `#!/bin/sh
+echo 'not-json'`
+	require.NoError(t, os.WriteFile(nvtopPath, []byte(nvtopScript), 0755))
+
+	nvidiaPath := filepath.Join(dir, "nvidia-smi")
+	nvidiaScript := `#!/bin/sh
+echo "0, NVIDIA Priority GPU, 45, 512, 2048, 12, 25"`
+	require.NoError(t, os.WriteFile(nvidiaPath, []byte(nvidiaScript), 0755))
+
+	gm, err := NewGPUManager()
+	require.NoError(t, err)
+	require.NotNil(t, gm)
+
+	time.Sleep(150 * time.Millisecond)
+	gpu, ok := gm.GpuDataMap["0"]
+	require.True(t, ok)
+	assert.Equal(t, "Priority GPU", gpu.Name)
+	assert.Equal(t, 45.0, gpu.Temperature)
+}
+
+func TestNewGPUManagerPriorityMixedCollectors(t *testing.T) {
+	origPath := os.Getenv("PATH")
+	defer os.Setenv("PATH", origPath)
+
+	dir := t.TempDir()
+	os.Setenv("PATH", dir)
+	t.Setenv("BESZEL_AGENT_GPU_COLLECTOR", "intel_gpu_top,rocm-smi")
+
+	intelPath := filepath.Join(dir, "intel_gpu_top")
+	intelScript := `#!/bin/sh
+echo "Freq MHz      IRQ RC6     Power W     IMC MiB/s             RCS             VCS"
+echo " req  act       /s   %   gpu   pkg     rd     wr       %  se  wa       %  se  wa"
+echo "226  223      338  58  2.00  2.69   1820    965   0.00    0   0    0.00   0   0"
+echo "189  187      412  67  1.80  2.45   1950    823   8.50    2   1    15.00   1   0"
+`
+	require.NoError(t, os.WriteFile(intelPath, []byte(intelScript), 0755))
+
+	rocmPath := filepath.Join(dir, "rocm-smi")
+	rocmScript := `#!/bin/sh
+echo '{"card0": {"Temperature (Sensor edge) (C)": "49.0", "Current Socket Graphics Package Power (W)": "28.159", "GPU use (%)": "0", "VRAM Total Memory (B)": "536870912", "VRAM Total Used Memory (B)": "445550592", "Card Series": "Rembrandt [Radeon 680M]", "GUID": "34756"}}'
+`
+	require.NoError(t, os.WriteFile(rocmPath, []byte(rocmScript), 0755))
+
+	gm, err := NewGPUManager()
+	require.NoError(t, err)
+	require.NotNil(t, gm)
+
+	time.Sleep(150 * time.Millisecond)
+	_, intelOk := gm.GpuDataMap["i0"]
+	_, amdOk := gm.GpuDataMap["34756"]
+	assert.True(t, intelOk)
+	assert.True(t, amdOk)
+}
+
+func TestNewGPUManagerPriorityNvmlFallbackToNvidiaSmi(t *testing.T) {
+	origPath := os.Getenv("PATH")
+	defer os.Setenv("PATH", origPath)
+
+	dir := t.TempDir()
+	os.Setenv("PATH", dir)
+	t.Setenv("BESZEL_AGENT_GPU_COLLECTOR", "nvml,nvidia-smi")
+
+	nvidiaPath := filepath.Join(dir, "nvidia-smi")
+	nvidiaScript := `#!/bin/sh
+echo "0, NVIDIA Fallback GPU, 41, 256, 1024, 8, 14"`
+	require.NoError(t, os.WriteFile(nvidiaPath, []byte(nvidiaScript), 0755))
+
+	gm, err := NewGPUManager()
+	require.NoError(t, err)
+	require.NotNil(t, gm)
+
+	time.Sleep(150 * time.Millisecond)
+	gpu, ok := gm.GpuDataMap["0"]
+	require.True(t, ok)
+	assert.Equal(t, "Fallback GPU", gpu.Name)
+}
+
+func TestNewGPUManagerConfiguredCollectorsMustStart(t *testing.T) {
+	origPath := os.Getenv("PATH")
+	defer os.Setenv("PATH", origPath)
+
+	dir := t.TempDir()
+	os.Setenv("PATH", dir)
+
+	t.Run("configured valid collector unavailable", func(t *testing.T) {
+		t.Setenv("BESZEL_AGENT_GPU_COLLECTOR", "nvidia-smi")
+		gm, err := NewGPUManager()
+		require.Nil(t, gm)
+		require.Error(t, err)
+		assert.Contains(t, err.Error(), "no configured GPU collectors are available")
+	})
+
+	t.Run("configured collector list has only unknown entries", func(t *testing.T) {
+		t.Setenv("BESZEL_AGENT_GPU_COLLECTOR", "bad,unknown")
+		gm, err := NewGPUManager()
+		require.Nil(t, gm)
+		require.Error(t, err)
+		assert.Contains(t, err.Error(), "no configured GPU collectors are available")
+	})
+}
+
+func TestNewGPUManagerJetsonIgnoresCollectorConfig(t *testing.T) {
+	origPath := os.Getenv("PATH")
+	defer os.Setenv("PATH", origPath)
+
+	dir := t.TempDir()
+	os.Setenv("PATH", dir)
+	t.Setenv("BESZEL_AGENT_GPU_COLLECTOR", "nvidia-smi")
+
+	tegraPath := filepath.Join(dir, "tegrastats")
+	tegraScript := `#!/bin/sh
+echo "11-14-2024 22:54:33 RAM 1024/4096MB GR3D_FREQ 80% tj@70C VDD_GPU_SOC 1000mW"`
+	require.NoError(t, os.WriteFile(tegraPath, []byte(tegraScript), 0755))
+
+	gm, err := NewGPUManager()
+	require.NoError(t, err)
+	require.NotNil(t, gm)
+
+	time.Sleep(100 * time.Millisecond)
+	gpu, ok := gm.GpuDataMap["0"]
+	require.True(t, ok)
+	assert.Equal(t, "GPU", gpu.Name)
+}
+
 // TestAccumulationTableDriven tests the accumulation behavior for all three GPU types
 func TestAccumulation(t *testing.T) {
 	type expectedGPUValues struct {
@@ -1346,7 +1686,7 @@ func TestIntelUpdateFromStats(t *testing.T) {
 	ok := gm.updateIntelFromStats(&sample1)
 	assert.True(t, ok)
 
-	gpu := gm.GpuDataMap["0"]
+	gpu := gm.GpuDataMap["i0"]
 	require.NotNil(t, gpu)
 	assert.Equal(t, "GPU", gpu.Name)
 	assert.EqualValues(t, 10.5, gpu.Power)
@@ -1368,7 +1708,7 @@ func TestIntelUpdateFromStats(t *testing.T) {
 	ok = gm.updateIntelFromStats(&sample2)
 	assert.True(t, ok)
 
-	gpu = gm.GpuDataMap["0"]
+	gpu = gm.GpuDataMap["i0"]
 	require.NotNil(t, gpu)
 	assert.EqualValues(t, 10.5, gpu.Power)
 	assert.EqualValues(t, 30.0, gpu.Engines["Render/3D"]) // 20 + 10
@@ -1407,7 +1747,7 @@ echo "298  295      278  51  2.20  3.12   1675    942   5.75    1   2    9.50
 		t.Fatalf("collectIntelStats error: %v", err)
 	}
 
-	gpu := gm.GpuDataMap["0"]
+	gpu := gm.GpuDataMap["i0"]
 	require.NotNil(t, gpu)
 	// Power should be sum of samples 2-4 (first is skipped): 2.0 + 1.8 + 2.2 = 6.0
 	assert.EqualValues(t, 6.0, gpu.Power)

agent/handlers.go

@@ -9,7 +9,7 @@ import (
 	"github.com/henrygd/beszel/internal/common"
 	"github.com/henrygd/beszel/internal/entities/smart"
 
-	"golang.org/x/exp/slog"
+	"log/slog"
 )
 
 // HandlerContext provides context for request handlers
@@ -94,7 +94,7 @@ func (h *GetDataHandler) Handle(hctx *HandlerContext) error {
 	var options common.DataRequestOptions
 	_ = cbor.Unmarshal(hctx.Request.Data, &options)
 
-	sysStats := hctx.Agent.gatherStats(options.CacheTimeMs)
+	sysStats := hctx.Agent.gatherStats(options)
 	return hctx.SendResponse(sysStats, hctx.RequestID)
 }
 

agent/handlers_test.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package agent
 

agent/health/health.go

@@ -9,11 +9,31 @@ import (
 	"log"
 	"os"
 	"path/filepath"
+	"runtime"
 	"time"
 )
 
 // healthFile is the path to the health file
-var healthFile = filepath.Join(os.TempDir(), "beszel_health")
+var healthFile = getHealthFilePath()
+
+func getHealthFilePath() string {
+	filename := "beszel_health"
+	if runtime.GOOS == "linux" {
+		fullPath := filepath.Join("/dev/shm", filename)
+		if err := updateHealthFile(fullPath); err == nil {
+			return fullPath
+		}
+	}
+	return filepath.Join(os.TempDir(), filename)
+}
+
+func updateHealthFile(path string) error {
+	file, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	return file.Close()
+}
 
 // Check checks if the agent is connected by checking the modification time of the health file
 func Check() error {
@@ -30,11 +50,7 @@ func Check() error {
 
 // Update updates the modification time of the health file
 func Update() error {
-	file, err := os.Create(healthFile)
-	if err != nil {
-		return err
-	}
-	return file.Close()
+	return updateHealthFile(healthFile)
 }
 
 // CleanUp removes the health file

agent/health/health_test.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package health
 
@@ -37,7 +36,6 @@ func TestHealth(t *testing.T) {
 	})
 
 	// This test uses synctest to simulate time passing.
-	// NOTE: This test requires GOEXPERIMENT=synctest to run.
 	t.Run("check with simulated time", func(t *testing.T) {
 		synctest.Test(t, func(t *testing.T) {
 			// Update the file to set the initial timestamp.

agent/lhm/beszel_lhm.cs

@@ -52,7 +52,12 @@ class Program
     foreach (var sensor in hardware.Sensors)
     {
       var validTemp = sensor.SensorType == SensorType.Temperature && sensor.Value.HasValue;
-      if (!validTemp || sensor.Name.Contains("Distance"))
+      if (!validTemp ||
+          sensor.Name.IndexOf("Distance", StringComparison.OrdinalIgnoreCase) >= 0 ||
+          sensor.Name.IndexOf("Limit", StringComparison.OrdinalIgnoreCase) >= 0 ||
+          sensor.Name.IndexOf("Critical", StringComparison.OrdinalIgnoreCase) >= 0 ||
+          sensor.Name.IndexOf("Warning", StringComparison.OrdinalIgnoreCase) >= 0 ||
+          sensor.Name.IndexOf("Resolution", StringComparison.OrdinalIgnoreCase) >= 0)
       {
         continue;
       }

agent/lhm/beszel_lhm.csproj

@@ -3,9 +3,11 @@
     <OutputType>Exe</OutputType>
     <TargetFramework>net48</TargetFramework>
     <Platforms>x64</Platforms>
+    <RuntimeIdentifier>win-x64</RuntimeIdentifier>
+    <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="LibreHardwareMonitorLib" Version="0.9.4" />
+    <PackageReference Include="LibreHardwareMonitorLib" Version="0.9.5" />
   </ItemGroup>
 </Project>

agent/response.go

@@ -0,0 +1,31 @@
+package agent
+
+import (
+	"github.com/fxamacker/cbor/v2"
+	"github.com/henrygd/beszel/internal/common"
+	"github.com/henrygd/beszel/internal/entities/smart"
+	"github.com/henrygd/beszel/internal/entities/system"
+	"github.com/henrygd/beszel/internal/entities/systemd"
+)
+
+// newAgentResponse creates an AgentResponse using legacy typed fields.
+// This maintains backward compatibility with <= 0.17 hubs that expect specific fields.
+func newAgentResponse(data any, requestID *uint32) common.AgentResponse {
+	response := common.AgentResponse{Id: requestID}
+	switch v := data.(type) {
+	case *system.CombinedData:
+		response.SystemData = v
+	case *common.FingerprintResponse:
+		response.Fingerprint = v
+	case string:
+		response.String = &v
+	case map[string]smart.SmartData:
+		response.SmartData = v
+	case systemd.ServiceDetails:
+		response.ServiceInfo = v
+	default:
+		// For unknown types, use the generic Data field
+		response.Data, _ = cbor.Marshal(data)
+	}
+	return response
+}

agent/sensors_test.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package agent
 

agent/server.go

@@ -13,9 +13,7 @@ import (
 
 	"github.com/henrygd/beszel"
 	"github.com/henrygd/beszel/internal/common"
-	"github.com/henrygd/beszel/internal/entities/smart"
 	"github.com/henrygd/beszel/internal/entities/system"
-	"github.com/henrygd/beszel/internal/entities/systemd"
 
 	"github.com/blang/semver"
 	"github.com/fxamacker/cbor/v2"
@@ -38,6 +36,9 @@ var hubVersions map[string]semver.Version
 // and begins listening for connections. Returns an error if the server
 // is already running or if there's an issue starting the server.
 func (a *Agent) StartServer(opts ServerOptions) error {
+	if disableSSH, _ := GetEnv("DISABLE_SSH"); disableSSH == "true" {
+		return errors.New("SSH disabled")
+	}
 	if a.server != nil {
 		return errors.New("server already started")
 	}
@@ -165,20 +166,9 @@ func (a *Agent) handleSSHRequest(w io.Writer, req *common.HubRequest[cbor.RawMes
 	}
 
 	// responder that writes AgentResponse to stdout
+	// Uses legacy typed fields for backward compatibility with <= 0.17
 	sshResponder := func(data any, requestID *uint32) error {
-		response := common.AgentResponse{Id: requestID}
-		switch v := data.(type) {
-		case *system.CombinedData:
-			response.SystemData = v
-		case string:
-			response.String = &v
-		case map[string]smart.SmartData:
-			response.SmartData = v
-		case systemd.ServiceDetails:
-			response.ServiceInfo = v
-		default:
-			response.Error = fmt.Sprintf("unsupported response type: %T", data)
-		}
+		response := newAgentResponse(data, requestID)
 		return cbor.NewEncoder(w).Encode(response)
 	}
 
@@ -202,7 +192,7 @@ func (a *Agent) handleSSHRequest(w io.Writer, req *common.HubRequest[cbor.RawMes
 
 // handleLegacyStats serves the legacy one-shot stats payload for older hubs
 func (a *Agent) handleLegacyStats(w io.Writer, hubVersion semver.Version) error {
-	stats := a.gatherStats(60_000)
+	stats := a.gatherStats(common.DataRequestOptions{CacheTimeMs: 60_000})
 	return a.writeToSession(w, stats, hubVersion)
 }
 

agent/server_test.go

@@ -1,3 +1,5 @@
+//go:build testing
+
 package agent
 
 import (
@@ -180,6 +182,23 @@ func TestStartServer(t *testing.T) {
 	}
 }
 
+func TestStartServerDisableSSH(t *testing.T) {
+	os.Setenv("BESZEL_AGENT_DISABLE_SSH", "true")
+	defer os.Unsetenv("BESZEL_AGENT_DISABLE_SSH")
+
+	agent, err := NewAgent("")
+	require.NoError(t, err)
+
+	opts := ServerOptions{
+		Network: "tcp",
+		Addr:    ":45990",
+	}
+
+	err = agent.StartServer(opts)
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "SSH disabled")
+}
+
 /////////////////////////////////////////////////////////////////
 //////////////////// ParseKeys Tests ////////////////////////////
 /////////////////////////////////////////////////////////////////
@@ -513,7 +532,7 @@ func TestWriteToSessionEncoding(t *testing.T) {
 				err = json.Unmarshal([]byte(encodedData), &decodedJson)
 				assert.Error(t, err, "Should not be valid JSON data")
 
-				assert.Equal(t, testData.Info.Hostname, decodedCbor.Info.Hostname)
+				assert.Equal(t, testData.Details.Hostname, decodedCbor.Details.Hostname)
 				assert.Equal(t, testData.Stats.Cpu, decodedCbor.Stats.Cpu)
 			} else {
 				// Should be JSON - try to decode as JSON
@@ -526,7 +545,7 @@ func TestWriteToSessionEncoding(t *testing.T) {
 				assert.Error(t, err, "Should not be valid CBOR data")
 
 				// Verify the decoded JSON data matches our test data
-				assert.Equal(t, testData.Info.Hostname, decodedJson.Info.Hostname)
+				assert.Equal(t, testData.Details.Hostname, decodedJson.Details.Hostname)
 				assert.Equal(t, testData.Stats.Cpu, decodedJson.Stats.Cpu)
 
 				// Verify it looks like JSON (starts with '{' and contains readable field names)
@@ -550,13 +569,12 @@ func createTestCombinedData() *system.CombinedData {
 			DiskUsed:  549755813888,  // 512GB
 			DiskPct:   50.0,
 		},
+		Details: &system.Details{
+			Hostname: "test-host",
+		},
 		Info: system.Info{
-			Hostname:     "test-host",
-			Cores:        8,
-			CpuModel:     "Test CPU Model",
 			Uptime:       3600,
 			AgentVersion: "0.12.0",
-			Os:           system.Linux,
 		},
 		Containers: []*container.Stats{
 			{

agent/smart.go

@@ -8,8 +8,10 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"log/slog"
 	"os"
 	"os/exec"
+	"path/filepath"
 	"runtime"
 	"strconv"
 	"strings"
@@ -17,8 +19,6 @@ import (
 	"time"
 
 	"github.com/henrygd/beszel/internal/entities/smart"
-
-	"golang.org/x/exp/slog"
 )
 
 // SmartManager manages data collection for SMART devices
@@ -28,7 +28,7 @@ type SmartManager struct {
 	SmartDevices    []*DeviceInfo
 	refreshMutex    sync.Mutex
 	lastScanTime    time.Time
-	binPath         string
+	smartctlPath    string
 	excludedDevices map[string]struct{}
 }
 
@@ -53,6 +53,12 @@ type DeviceInfo struct {
 	parserType string
 }
 
+// deviceKey is a composite key for a device, used to identify a device uniquely.
+type deviceKey struct {
+	name       string
+	deviceType string
+}
+
 var errNoValidSmartData = fmt.Errorf("no valid SMART data found") // Error for missing data
 
 // Refresh updates SMART data for all known devices
@@ -164,27 +170,35 @@ func (sm *SmartManager) ScanDevices(force bool) error {
 		configuredDevices = parsedDevices
 	}
 
-	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
-	defer cancel()
-
-	cmd := exec.CommandContext(ctx, sm.binPath, "--scan", "-j")
-	output, err := cmd.Output()
-
 	var (
 		scanErr        error
 		scannedDevices []*DeviceInfo
 		hasValidScan   bool
 	)
 
-	if err != nil {
-		scanErr = err
-	} else {
-		scannedDevices, hasValidScan = sm.parseScan(output)
-		if !hasValidScan {
-			scanErr = errNoValidSmartData
+	if sm.smartctlPath != "" {
+		ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+		defer cancel()
+
+		cmd := exec.CommandContext(ctx, sm.smartctlPath, "--scan", "-j")
+		output, err := cmd.Output()
+		if err != nil {
+			scanErr = err
+		} else {
+			scannedDevices, hasValidScan = sm.parseScan(output)
+			if !hasValidScan {
+				scanErr = errNoValidSmartData
+			}
 		}
 	}
 
+	// Add eMMC devices (Linux only) by reading sysfs health fields. This does not
+	// require smartctl and does not scan the whole device.
+	if emmcDevices := scanEmmcDevices(); len(emmcDevices) > 0 {
+		scannedDevices = append(scannedDevices, emmcDevices...)
+		hasValidScan = true
+	}
+
 	finalDevices := mergeDeviceLists(currentDevices, scannedDevices, configuredDevices)
 	finalDevices = sm.filterExcludedDevices(finalDevices)
 	sm.updateSmartDevices(finalDevices)
@@ -201,7 +215,11 @@ func (sm *SmartManager) ScanDevices(force bool) error {
 }
 
 func (sm *SmartManager) parseConfiguredDevices(config string) ([]*DeviceInfo, error) {
-	entries := strings.Split(config, ",")
+	splitChar := os.Getenv("SMART_DEVICES_SEPARATOR")
+	if splitChar == "" {
+		splitChar = ","
+	}
+	entries := strings.Split(config, splitChar)
 	devices := make([]*DeviceInfo, 0, len(entries))
 	for _, entry := range entries {
 		entry = strings.TrimSpace(entry)
@@ -325,6 +343,13 @@ func normalizeParserType(value string) string {
 	}
 }
 
+// makeDeviceKey creates a composite key from device name and type.
+// This allows multiple drives under the same device path (e.g., RAID controllers)
+// to be tracked separately.
+func makeDeviceKey(name, deviceType string) deviceKey {
+	return deviceKey{name: name, deviceType: deviceType}
+}
+
 // parseSmartOutput attempts each SMART parser, optionally detecting the type when
 // it is not provided, and updates the device info when a parser succeeds.
 func (sm *SmartManager) parseSmartOutput(deviceInfo *DeviceInfo, output []byte) bool {
@@ -425,35 +450,75 @@ func (sm *SmartManager) CollectSmart(deviceInfo *DeviceInfo) error {
 		return errNoValidSmartData
 	}
 
+	// eMMC health is not exposed via SMART on Linux, but the kernel provides
+	// wear / EOL indicators via sysfs. Prefer that path when available.
+	if deviceInfo != nil {
+		if ok, err := sm.collectEmmcHealth(deviceInfo); ok {
+			return err
+		}
+	}
+
+	if sm.smartctlPath == "" {
+		return errNoValidSmartData
+	}
+
 	// slog.Info("collecting SMART data", "device", deviceInfo.Name, "type", deviceInfo.Type, "has_existing_data", sm.hasDataForDevice(deviceInfo.Name))
 
 	// Check if we have any existing data for this device
 	hasExistingData := sm.hasDataForDevice(deviceInfo.Name)
 
-	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+	ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
 	defer cancel()
 
 	// Try with -n standby first if we have existing data
-	args := sm.smartctlArgs(deviceInfo, true)
-	cmd := exec.CommandContext(ctx, sm.binPath, args...)
+	args := sm.smartctlArgs(deviceInfo, hasExistingData)
+	cmd := exec.CommandContext(ctx, sm.smartctlPath, args...)
 	output, err := cmd.CombinedOutput()
 
 	// Check if device is in standby (exit status 2)
-	if exitErr, ok := err.(*exec.ExitError); ok && exitErr.ExitCode() == 2 {
+	if exitErr, ok := errors.AsType[*exec.ExitError](err); ok && exitErr.ExitCode() == 2 {
 		if hasExistingData {
 			// Device is in standby and we have cached data, keep using cache
 			return nil
 		}
 		// No cached data, need to collect initial data by bypassing standby
-		ctx2, cancel2 := context.WithTimeout(context.Background(), 2*time.Second)
+		ctx2, cancel2 := context.WithTimeout(context.Background(), 15*time.Second)
 		defer cancel2()
 		args = sm.smartctlArgs(deviceInfo, false)
-		cmd = exec.CommandContext(ctx2, sm.binPath, args...)
+		cmd = exec.CommandContext(ctx2, sm.smartctlPath, args...)
 		output, err = cmd.CombinedOutput()
 	}
 
 	hasValidData := sm.parseSmartOutput(deviceInfo, output)
 
+	// If NVMe controller path failed, try namespace path as fallback.
+	// NVMe controllers (/dev/nvme0) don't always support SMART queries. See github.com/henrygd/beszel/issues/1504
+	if !hasValidData && err != nil && isNvmeControllerPath(deviceInfo.Name) {
+		controllerPath := deviceInfo.Name
+		namespacePath := controllerPath + "n1"
+		if !sm.isExcludedDevice(namespacePath) {
+			deviceInfo.Name = namespacePath
+
+			ctx3, cancel3 := context.WithTimeout(context.Background(), 15*time.Second)
+			defer cancel3()
+			args = sm.smartctlArgs(deviceInfo, false)
+			cmd = exec.CommandContext(ctx3, sm.smartctlPath, args...)
+			output, err = cmd.CombinedOutput()
+			hasValidData = sm.parseSmartOutput(deviceInfo, output)
+
+			// Auto-exclude the controller path so future scans don't re-add it
+			if hasValidData {
+				sm.Lock()
+				if sm.excludedDevices == nil {
+					sm.excludedDevices = make(map[string]struct{})
+				}
+				sm.excludedDevices[controllerPath] = struct{}{}
+				sm.Unlock()
+				slog.Debug("auto-excluded NVMe controller path", "path", controllerPath)
+			}
+		}
+	}
+
 	if !hasValidData {
 		if err != nil {
 			slog.Info("smartctl failed", "device", deviceInfo.Name, "err", err)
@@ -469,10 +534,12 @@ func (sm *SmartManager) CollectSmart(deviceInfo *DeviceInfo) error {
 // smartctlArgs returns the arguments for the smartctl command
 // based on the device type and whether to include standby mode
 func (sm *SmartManager) smartctlArgs(deviceInfo *DeviceInfo, includeStandby bool) []string {
-	args := make([]string, 0, 7)
+	args := make([]string, 0, 9)
+	var deviceType, parserType string
 
 	if deviceInfo != nil {
-		deviceType := strings.ToLower(deviceInfo.Type)
+		deviceType = strings.ToLower(deviceInfo.Type)
+		parserType = strings.ToLower(deviceInfo.parserType)
 		// types sometimes misidentified in scan; see github.com/henrygd/beszel/issues/1345
 		if deviceType != "" && deviceType != "scsi" && deviceType != "ata" {
 			args = append(args, "-d", deviceInfo.Type)
@@ -480,6 +547,13 @@ func (sm *SmartManager) smartctlArgs(deviceInfo *DeviceInfo, includeStandby bool
 	}
 
 	args = append(args, "-a", "--json=c")
+	effectiveType := parserType
+	if effectiveType == "" {
+		effectiveType = deviceType
+	}
+	if effectiveType == "sat" || effectiveType == "ata" {
+		args = append(args, "-l", "devstat")
+	}
 
 	if includeStandby {
 		args = append(args, "-n", "standby")
@@ -540,6 +614,28 @@ func mergeDeviceLists(existing, scanned, configured []*DeviceInfo) []*DeviceInfo
 		return existing
 	}
 
+	// buildUniqueNameIndex returns devices that appear exactly once by name.
+	// It is used to safely apply name-only fallbacks without RAID ambiguity.
+	buildUniqueNameIndex := func(devices []*DeviceInfo) map[string]*DeviceInfo {
+		counts := make(map[string]int, len(devices))
+		for _, dev := range devices {
+			if dev == nil || dev.Name == "" {
+				continue
+			}
+			counts[dev.Name]++
+		}
+		unique := make(map[string]*DeviceInfo, len(counts))
+		for _, dev := range devices {
+			if dev == nil || dev.Name == "" {
+				continue
+			}
+			if counts[dev.Name] == 1 {
+				unique[dev.Name] = dev
+			}
+		}
+		return unique
+	}
+
 	// preserveVerifiedType copies the verified type/parser metadata from an existing
 	// device record so that subsequent scans/config updates never downgrade a
 	// previously verified device.
@@ -552,69 +648,90 @@ func mergeDeviceLists(existing, scanned, configured []*DeviceInfo) []*DeviceInfo
 		target.parserType = prev.parserType
 	}
 
-	existingIndex := make(map[string]*DeviceInfo, len(existing))
+	// applyConfiguredMetadata updates a matched device with any configured
+	// overrides, preserving verified type data when present.
+	applyConfiguredMetadata := func(existingDev, configuredDev *DeviceInfo) {
+		// Only update the type if it has not been verified yet; otherwise we
+		// keep the existing verified metadata intact.
+		if configuredDev.Type != "" && !existingDev.typeVerified {
+			newType := strings.TrimSpace(configuredDev.Type)
+			existingDev.Type = newType
+			existingDev.typeVerified = false
+			existingDev.parserType = normalizeParserType(newType)
+		}
+		if configuredDev.InfoName != "" {
+			existingDev.InfoName = configuredDev.InfoName
+		}
+		if configuredDev.Protocol != "" {
+			existingDev.Protocol = configuredDev.Protocol
+		}
+	}
+
+	existingIndex := make(map[deviceKey]*DeviceInfo, len(existing))
 	for _, dev := range existing {
 		if dev == nil || dev.Name == "" {
 			continue
 		}
-		existingIndex[dev.Name] = dev
+		existingIndex[makeDeviceKey(dev.Name, dev.Type)] = dev
 	}
+	existingByName := buildUniqueNameIndex(existing)
 
 	finalDevices := make([]*DeviceInfo, 0, len(scanned)+len(configured))
-	deviceIndex := make(map[string]*DeviceInfo, len(scanned)+len(configured))
+	deviceIndex := make(map[deviceKey]*DeviceInfo, len(scanned)+len(configured))
 
 	// Start with the newly scanned devices so we always surface fresh metadata,
 	// but ensure we retain any previously verified parser assignment.
-	for _, dev := range scanned {
-		if dev == nil || dev.Name == "" {
+	for _, scannedDevice := range scanned {
+		if scannedDevice == nil || scannedDevice.Name == "" {
 			continue
 		}
 
 		// Work on a copy so we can safely adjust metadata without mutating the
 		// input slices that may be reused elsewhere.
-		copyDev := *dev
-		if prev := existingIndex[copyDev.Name]; prev != nil {
+		copyDev := *scannedDevice
+		key := makeDeviceKey(copyDev.Name, copyDev.Type)
+		if prev := existingIndex[key]; prev != nil {
+			preserveVerifiedType(&copyDev, prev)
+		} else if prev := existingByName[copyDev.Name]; prev != nil {
 			preserveVerifiedType(&copyDev, prev)
 		}
 
 		finalDevices = append(finalDevices, &copyDev)
-		deviceIndex[copyDev.Name] = finalDevices[len(finalDevices)-1]
+		copyKey := makeDeviceKey(copyDev.Name, copyDev.Type)
+		deviceIndex[copyKey] = finalDevices[len(finalDevices)-1]
 	}
+	deviceIndexByName := buildUniqueNameIndex(finalDevices)
 
 	// Merge configured devices on top so users can override scan results (except
 	// for verified type information).
-	for _, dev := range configured {
-		if dev == nil || dev.Name == "" {
+	for _, configuredDevice := range configured {
+		if configuredDevice == nil || configuredDevice.Name == "" {
 			continue
 		}
 
-		if existingDev, ok := deviceIndex[dev.Name]; ok {
-			// Only update the type if it has not been verified yet; otherwise we
-			// keep the existing verified metadata intact.
-			if dev.Type != "" && !existingDev.typeVerified {
-				newType := strings.TrimSpace(dev.Type)
-				existingDev.Type = newType
-				existingDev.typeVerified = false
-				existingDev.parserType = normalizeParserType(newType)
-			}
-			if dev.InfoName != "" {
-				existingDev.InfoName = dev.InfoName
-			}
-			if dev.Protocol != "" {
-				existingDev.Protocol = dev.Protocol
-			}
+		key := makeDeviceKey(configuredDevice.Name, configuredDevice.Type)
+		if existingDev, ok := deviceIndex[key]; ok {
+			applyConfiguredMetadata(existingDev, configuredDevice)
+			continue
+		}
+		if existingDev := deviceIndexByName[configuredDevice.Name]; existingDev != nil {
+			applyConfiguredMetadata(existingDev, configuredDevice)
 			continue
 		}
 
-		copyDev := *dev
-		if prev := existingIndex[copyDev.Name]; prev != nil {
+		copyDev := *configuredDevice
+		key = makeDeviceKey(copyDev.Name, copyDev.Type)
+		if prev := existingIndex[key]; prev != nil {
+			preserveVerifiedType(&copyDev, prev)
+		} else if prev := existingByName[copyDev.Name]; prev != nil {
 			preserveVerifiedType(&copyDev, prev)
 		} else if copyDev.Type != "" {
 			copyDev.parserType = normalizeParserType(copyDev.Type)
 		}
 
 		finalDevices = append(finalDevices, &copyDev)
-		deviceIndex[copyDev.Name] = finalDevices[len(finalDevices)-1]
+		copyKey := makeDeviceKey(copyDev.Name, copyDev.Type)
+		deviceIndex[copyKey] = finalDevices[len(finalDevices)-1]
 	}
 
 	return finalDevices
@@ -632,12 +749,14 @@ func (sm *SmartManager) updateSmartDevices(devices []*DeviceInfo) {
 		return
 	}
 
-	validNames := make(map[string]struct{}, len(devices))
+	validKeys := make(map[deviceKey]struct{}, len(devices))
+	nameCounts := make(map[string]int, len(devices))
 	for _, device := range devices {
 		if device == nil || device.Name == "" {
 			continue
 		}
-		validNames[device.Name] = struct{}{}
+		validKeys[makeDeviceKey(device.Name, device.Type)] = struct{}{}
+		nameCounts[device.Name]++
 	}
 
 	for key, data := range sm.SmartDataMap {
@@ -646,7 +765,11 @@ func (sm *SmartManager) updateSmartDevices(devices []*DeviceInfo) {
 			continue
 		}
 
-		if _, ok := validNames[data.DiskName]; ok {
+		if data.DiskType == "" {
+			if nameCounts[data.DiskName] == 1 {
+				continue
+			}
+		} else if _, ok := validKeys[makeDeviceKey(data.DiskName, data.DiskType)]; ok {
 			continue
 		}
 
@@ -734,6 +857,11 @@ func (sm *SmartManager) parseSmartForSata(output []byte) (bool, int) {
 	smartData.FirmwareVersion = data.FirmwareVersion
 	smartData.Capacity = data.UserCapacity.Bytes
 	smartData.Temperature = data.Temperature.Current
+	if smartData.Temperature == 0 {
+		if temp, ok := temperatureFromAtaDeviceStatistics(data.AtaDeviceStatistics); ok {
+			smartData.Temperature = temp
+		}
+	}
 	smartData.SmartStatus = getSmartStatus(smartData.Temperature, data.SmartStatus.Passed)
 	smartData.DiskName = data.Device.Name
 	smartData.DiskType = data.Device.Type
@@ -772,6 +900,36 @@ func getSmartStatus(temperature uint8, passed bool) string {
 	}
 }
 
+func temperatureFromAtaDeviceStatistics(stats smart.AtaDeviceStatistics) (uint8, bool) {
+	entry := findAtaDeviceStatisticsEntry(stats, 5, "Current Temperature")
+	if entry == nil || entry.Value == nil {
+		return 0, false
+	}
+	if *entry.Value > 255 {
+		return 0, false
+	}
+	return uint8(*entry.Value), true
+}
+
+// findAtaDeviceStatisticsEntry centralizes ATA devstat lookups so additional
+// metrics can be pulled from the same structure in the future.
+func findAtaDeviceStatisticsEntry(stats smart.AtaDeviceStatistics, pageNumber uint8, entryName string) *smart.AtaDeviceStatisticsEntry {
+	for pageIdx := range stats.Pages {
+		page := &stats.Pages[pageIdx]
+		if page.Number != pageNumber {
+			continue
+		}
+		for entryIdx := range page.Table {
+			entry := &page.Table[entryIdx]
+			if !strings.EqualFold(entry.Name, entryName) {
+				continue
+			}
+			return entry
+		}
+	}
+	return nil
+}
+
 func (sm *SmartManager) parseSmartForScsi(output []byte) (bool, int) {
 	var data smart.SmartInfoForScsi
 
@@ -957,6 +1115,27 @@ func (sm *SmartManager) detectSmartctl() (string, error) {
 	return "", errors.New("smartctl not found")
 }
 
+// isNvmeControllerPath checks if the path matches an NVMe controller pattern
+// like /dev/nvme0, /dev/nvme1, etc. (without namespace suffix like n1)
+func isNvmeControllerPath(path string) bool {
+	base := filepath.Base(path)
+	if !strings.HasPrefix(base, "nvme") {
+		return false
+	}
+	suffix := strings.TrimPrefix(base, "nvme")
+	if suffix == "" {
+		return false
+	}
+	// Controller paths are just "nvme" + digits (e.g., nvme0, nvme1)
+	// Namespace paths have "n" after the controller number (e.g., nvme0n1)
+	for _, c := range suffix {
+		if c < '0' || c > '9' {
+			return false
+		}
+	}
+	return true
+}
+
 // NewSmartManager creates and initializes a new SmartManager
 func NewSmartManager() (*SmartManager, error) {
 	sm := &SmartManager{
@@ -964,11 +1143,15 @@ func NewSmartManager() (*SmartManager, error) {
 	}
 	sm.refreshExcludedDevices()
 	path, err := sm.detectSmartctl()
+	slog.Debug("smartctl", "path", path, "err", err)
 	if err != nil {
-		slog.Debug(err.Error())
+		// Keep the previous fail-fast behavior unless this Linux host exposes
+		// eMMC health via sysfs, in which case smartctl is optional.
+		if runtime.GOOS == "linux" && len(scanEmmcDevices()) > 0 {
+			return sm, nil
+		}
 		return nil, err
 	}
-	slog.Debug("smartctl", "path", path)
-	sm.binPath = path
+	sm.smartctlPath = path
 	return sm, nil
 }

agent/smart_test.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package agent
 
@@ -89,6 +88,39 @@ func TestParseSmartForSata(t *testing.T) {
 	}
 }
 
+func TestParseSmartForSataDeviceStatisticsTemperature(t *testing.T) {
+	jsonPayload := []byte(`{
+		"smartctl": {"exit_status": 0},
+		"device": {"name": "/dev/sdb", "type": "sat"},
+		"model_name": "SanDisk SSD U110 16GB",
+		"serial_number": "DEVSTAT123",
+		"firmware_version": "U21B001",
+		"user_capacity": {"bytes": 16013942784},
+		"smart_status": {"passed": true},
+		"ata_smart_attributes": {"table": []},
+		"ata_device_statistics": {
+			"pages": [
+				{
+					"number": 5,
+					"name": "Temperature Statistics",
+					"table": [
+						{"name": "Current Temperature", "value": 22, "flags": {"valid": true}}
+					]
+				}
+			]
+		}
+	}`)
+
+	sm := &SmartManager{SmartDataMap: make(map[string]*smart.SmartData)}
+	hasData, exitStatus := sm.parseSmartForSata(jsonPayload)
+	require.True(t, hasData)
+	assert.Equal(t, 0, exitStatus)
+
+	deviceData, ok := sm.SmartDataMap["DEVSTAT123"]
+	require.True(t, ok, "expected smart data entry for serial DEVSTAT123")
+	assert.Equal(t, uint8(22), deviceData.Temperature)
+}
+
 func TestParseSmartForSataParentheticalRawValue(t *testing.T) {
 	jsonPayload := []byte(`{
 		"smartctl": {"exit_status": 0},
@@ -195,6 +227,24 @@ func TestDevicesSnapshotReturnsCopy(t *testing.T) {
 	assert.Len(t, snapshot, 2)
 }
 
+func TestScanDevicesWithEnvOverrideAndSeparator(t *testing.T) {
+	t.Setenv("SMART_DEVICES_SEPARATOR", "|")
+	t.Setenv("SMART_DEVICES", "/dev/sda:jmb39x-q,0|/dev/nvme0:nvme")
+
+	sm := &SmartManager{
+		SmartDataMap: make(map[string]*smart.SmartData),
+	}
+
+	err := sm.ScanDevices(true)
+	require.NoError(t, err)
+
+	require.Len(t, sm.SmartDevices, 2)
+	assert.Equal(t, "/dev/sda", sm.SmartDevices[0].Name)
+	assert.Equal(t, "jmb39x-q,0", sm.SmartDevices[0].Type)
+	assert.Equal(t, "/dev/nvme0", sm.SmartDevices[1].Name)
+	assert.Equal(t, "nvme", sm.SmartDevices[1].Type)
+}
+
 func TestScanDevicesWithEnvOverride(t *testing.T) {
 	t.Setenv("SMART_DEVICES", "/dev/sda:sat, /dev/nvme0:nvme")
 
@@ -249,15 +299,21 @@ func TestSmartctlArgs(t *testing.T) {
 
 	sataDevice := &DeviceInfo{Name: "/dev/sda", Type: "sat"}
 	assert.Equal(t,
-		[]string{"-d", "sat", "-a", "--json=c", "-n", "standby", "/dev/sda"},
+		[]string{"-d", "sat", "-a", "--json=c", "-l", "devstat", "-n", "standby", "/dev/sda"},
 		sm.smartctlArgs(sataDevice, true),
 	)
 
 	assert.Equal(t,
-		[]string{"-d", "sat", "-a", "--json=c", "/dev/sda"},
+		[]string{"-d", "sat", "-a", "--json=c", "-l", "devstat", "/dev/sda"},
 		sm.smartctlArgs(sataDevice, false),
 	)
 
+	nvmeDevice := &DeviceInfo{Name: "/dev/nvme0", Type: "nvme"}
+	assert.Equal(t,
+		[]string{"-d", "nvme", "-a", "--json=c", "-n", "standby", "/dev/nvme0"},
+		sm.smartctlArgs(nvmeDevice, true),
+	)
+
 	assert.Equal(t,
 		[]string{"-a", "--json=c", "-n", "standby"},
 		sm.smartctlArgs(nil, true),
@@ -442,6 +498,88 @@ func TestMergeDeviceListsUpdatesTypeWhenUnverified(t *testing.T) {
 	assert.Equal(t, "", device.parserType)
 }
 
+func TestMergeDeviceListsHandlesDevicesWithSameNameAndDifferentTypes(t *testing.T) {
+	// There are use cases where the same device name is re-used,
+	// for example, a RAID controller with multiple drives.
+	scanned := []*DeviceInfo{
+		{Name: "/dev/sda", Type: "megaraid,0"},
+		{Name: "/dev/sda", Type: "megaraid,1"},
+		{Name: "/dev/sda", Type: "megaraid,2"},
+	}
+
+	merged := mergeDeviceLists(nil, scanned, nil)
+	require.Len(t, merged, 3, "should have 3 separate devices for RAID controller")
+
+	byKey := make(map[string]*DeviceInfo, len(merged))
+	for _, dev := range merged {
+		key := dev.Name + "|" + dev.Type
+		byKey[key] = dev
+	}
+
+	assert.Contains(t, byKey, "/dev/sda|megaraid,0")
+	assert.Contains(t, byKey, "/dev/sda|megaraid,1")
+	assert.Contains(t, byKey, "/dev/sda|megaraid,2")
+}
+
+func TestMergeDeviceListsHandlesMixedRAIDAndRegular(t *testing.T) {
+	// Test mixing RAID drives with regular devices
+	scanned := []*DeviceInfo{
+		{Name: "/dev/sda", Type: "megaraid,0"},
+		{Name: "/dev/sda", Type: "megaraid,1"},
+		{Name: "/dev/sdb", Type: "sat"},
+		{Name: "/dev/nvme0", Type: "nvme"},
+	}
+
+	merged := mergeDeviceLists(nil, scanned, nil)
+	require.Len(t, merged, 4, "should have 4 separate devices")
+
+	byKey := make(map[string]*DeviceInfo, len(merged))
+	for _, dev := range merged {
+		key := dev.Name + "|" + dev.Type
+		byKey[key] = dev
+	}
+
+	assert.Contains(t, byKey, "/dev/sda|megaraid,0")
+	assert.Contains(t, byKey, "/dev/sda|megaraid,1")
+	assert.Contains(t, byKey, "/dev/sdb|sat")
+	assert.Contains(t, byKey, "/dev/nvme0|nvme")
+}
+
+func TestUpdateSmartDevicesPreservesRAIDDrives(t *testing.T) {
+	// Test that updateSmartDevices correctly validates RAID drives using composite keys
+	sm := &SmartManager{
+		SmartDevices: []*DeviceInfo{
+			{Name: "/dev/sda", Type: "megaraid,0"},
+			{Name: "/dev/sda", Type: "megaraid,1"},
+		},
+		SmartDataMap: map[string]*smart.SmartData{
+			"serial-0": {
+				DiskName:     "/dev/sda",
+				DiskType:     "megaraid,0",
+				SerialNumber: "serial-0",
+			},
+			"serial-1": {
+				DiskName:     "/dev/sda",
+				DiskType:     "megaraid,1",
+				SerialNumber: "serial-1",
+			},
+			"serial-stale": {
+				DiskName:     "/dev/sda",
+				DiskType:     "megaraid,2",
+				SerialNumber: "serial-stale",
+			},
+		},
+	}
+
+	sm.updateSmartDevices(sm.SmartDevices)
+
+	// serial-0 and serial-1 should be preserved (matching devices exist)
+	assert.Contains(t, sm.SmartDataMap, "serial-0")
+	assert.Contains(t, sm.SmartDataMap, "serial-1")
+	// serial-stale should be removed (no matching device)
+	assert.NotContains(t, sm.SmartDataMap, "serial-stale")
+}
+
 func TestParseSmartOutputMarksVerified(t *testing.T) {
 	fixturePath := filepath.Join("test-data", "smart", "nvme0.json")
 	data, err := os.ReadFile(fixturePath)
@@ -780,3 +918,36 @@ func TestFilterExcludedDevices(t *testing.T) {
 		})
 	}
 }
+
+func TestIsNvmeControllerPath(t *testing.T) {
+	tests := []struct {
+		path     string
+		expected bool
+	}{
+		// Controller paths (should return true)
+		{"/dev/nvme0", true},
+		{"/dev/nvme1", true},
+		{"/dev/nvme10", true},
+		{"nvme0", true},
+
+		// Namespace paths (should return false)
+		{"/dev/nvme0n1", false},
+		{"/dev/nvme1n1", false},
+		{"/dev/nvme0n1p1", false},
+		{"nvme0n1", false},
+
+		// Non-NVMe paths (should return false)
+		{"/dev/sda", false},
+		{"/dev/sda1", false},
+		{"/dev/hda", false},
+		{"", false},
+		{"/dev/nvme", false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.path, func(t *testing.T) {
+			result := isNvmeControllerPath(tt.path)
+			assert.Equal(t, tt.expected, result, "path: %s", tt.path)
+		})
+	}
+}

agent/system.go

@@ -2,15 +2,18 @@ package agent
 
 import (
 	"bufio"
+	"errors"
 	"fmt"
 	"log/slog"
 	"os"
+	"runtime"
 	"strconv"
 	"strings"
 	"time"
 
 	"github.com/henrygd/beszel"
 	"github.com/henrygd/beszel/agent/battery"
+	"github.com/henrygd/beszel/internal/entities/container"
 	"github.com/henrygd/beszel/internal/entities/system"
 
 	"github.com/shirou/gopsutil/v4/cpu"
@@ -27,41 +30,79 @@ type prevDisk struct {
 }
 
 // Sets initial / non-changing values about the host system
-func (a *Agent) initializeSystemInfo() {
+func (a *Agent) refreshSystemDetails() {
 	a.systemInfo.AgentVersion = beszel.Version
-	a.systemInfo.Hostname, _ = os.Hostname()
+
+	// get host info from Docker if available
+	var hostInfo container.HostInfo
+
+	if a.dockerManager != nil {
+		a.systemDetails.Podman = a.dockerManager.IsPodman()
+		hostInfo, _ = a.dockerManager.GetHostInfo()
+	}
+
+	a.systemDetails.Hostname, _ = os.Hostname()
+	if arch, err := host.KernelArch(); err == nil {
+		a.systemDetails.Arch = arch
+	} else {
+		a.systemDetails.Arch = runtime.GOARCH
+	}
 
 	platform, _, version, _ := host.PlatformInformation()
 
 	if platform == "darwin" {
-		a.systemInfo.KernelVersion = version
-		a.systemInfo.Os = system.Darwin
+		a.systemDetails.Os = system.Darwin
+		a.systemDetails.OsName = fmt.Sprintf("macOS %s", version)
 	} else if strings.Contains(platform, "indows") {
-		a.systemInfo.KernelVersion = fmt.Sprintf("%s %s", strings.Replace(platform, "Microsoft ", "", 1), version)
-		a.systemInfo.Os = system.Windows
+		a.systemDetails.Os = system.Windows
+		a.systemDetails.OsName = strings.Replace(platform, "Microsoft ", "", 1)
+		a.systemDetails.Kernel = version
 	} else if platform == "freebsd" {
-		a.systemInfo.Os = system.Freebsd
-		a.systemInfo.KernelVersion = version
+		a.systemDetails.Os = system.Freebsd
+		a.systemDetails.Kernel, _ = host.KernelVersion()
+		if prettyName, err := getOsPrettyName(); err == nil {
+			a.systemDetails.OsName = prettyName
+		} else {
+			a.systemDetails.OsName = "FreeBSD"
+		}
 	} else {
-		a.systemInfo.Os = system.Linux
-	}
-
-	if a.systemInfo.KernelVersion == "" {
-		a.systemInfo.KernelVersion, _ = host.KernelVersion()
+		a.systemDetails.Os = system.Linux
+		a.systemDetails.OsName = hostInfo.OperatingSystem
+		if a.systemDetails.OsName == "" {
+			if prettyName, err := getOsPrettyName(); err == nil {
+				a.systemDetails.OsName = prettyName
+			} else {
+				a.systemDetails.OsName = platform
+			}
+		}
+		a.systemDetails.Kernel = hostInfo.KernelVersion
+		if a.systemDetails.Kernel == "" {
+			a.systemDetails.Kernel, _ = host.KernelVersion()
+		}
 	}
 
 	// cpu model
 	if info, err := cpu.Info(); err == nil && len(info) > 0 {
-		a.systemInfo.CpuModel = info[0].ModelName
+		a.systemDetails.CpuModel = info[0].ModelName
 	}
 	// cores / threads
-	a.systemInfo.Cores, _ = cpu.Counts(false)
-	if threads, err := cpu.Counts(true); err == nil {
-		if threads > 0 && threads < a.systemInfo.Cores {
-			// in lxc logical cores reflects container limits, so use that as cores if lower
-			a.systemInfo.Cores = threads
-		} else {
-			a.systemInfo.Threads = threads
+	cores, _ := cpu.Counts(false)
+	threads := hostInfo.NCPU
+	if threads == 0 {
+		threads, _ = cpu.Counts(true)
+	}
+	// in lxc, logical cores reflects container limits, so use that as cores if lower
+	if threads > 0 && threads < cores {
+		cores = threads
+	}
+	a.systemDetails.Cores = cores
+	a.systemDetails.Threads = threads
+
+	// total memory
+	a.systemDetails.MemoryTotal = hostInfo.MemTotal
+	if a.systemDetails.MemoryTotal == 0 {
+		if v, err := mem.VirtualMemory(); err == nil {
+			a.systemDetails.MemoryTotal = v.Total
 		}
 	}
 
@@ -195,21 +236,16 @@ func (a *Agent) getSystemStats(cacheTimeMs uint16) system.Stats {
 		}
 	}
 
-	// update base system info
+	// update system info
 	a.systemInfo.ConnectionType = a.connectionManager.ConnectionType
 	a.systemInfo.Cpu = systemStats.Cpu
 	a.systemInfo.LoadAvg = systemStats.LoadAvg
-	// TODO: remove these in future release in favor of load avg array
-	a.systemInfo.LoadAvg1 = systemStats.LoadAvg[0]
-	a.systemInfo.LoadAvg5 = systemStats.LoadAvg[1]
-	a.systemInfo.LoadAvg15 = systemStats.LoadAvg[2]
 	a.systemInfo.MemPct = systemStats.MemPct
 	a.systemInfo.DiskPct = systemStats.DiskPct
+	a.systemInfo.Battery = systemStats.Battery
 	a.systemInfo.Uptime, _ = host.Uptime()
-	// TODO: in future release, remove MB bandwidth values in favor of bytes
-	a.systemInfo.Bandwidth = twoDecimals(systemStats.NetworkSent + systemStats.NetworkRecv)
 	a.systemInfo.BandwidthBytes = systemStats.Bandwidth[0] + systemStats.Bandwidth[1]
-	slog.Debug("sysinfo", "data", a.systemInfo)
+	a.systemInfo.Threads = a.systemDetails.Threads
 
 	return systemStats
 }
@@ -239,3 +275,24 @@ func getARCSize() (uint64, error) {
 
 	return 0, fmt.Errorf("failed to parse size field")
 }
+
+// getOsPrettyName attempts to get the pretty OS name from /etc/os-release on Linux systems
+func getOsPrettyName() (string, error) {
+	file, err := os.Open("/etc/os-release")
+	if err != nil {
+		return "", err
+	}
+	defer file.Close()
+
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		line := scanner.Text()
+		if after, ok := strings.CutPrefix(line, "PRETTY_NAME="); ok {
+			value := after
+			value = strings.Trim(value, `"`)
+			return value, nil
+		}
+	}
+
+	return "", errors.New("pretty name not found")
+}

agent/systemd.go

@@ -8,6 +8,7 @@ import (
 	"log/slog"
 	"maps"
 	"math"
+	"os"
 	"strconv"
 	"strings"
 	"sync"
@@ -17,9 +18,7 @@ import (
 	"github.com/henrygd/beszel/internal/entities/systemd"
 )
 
-var (
-	errNoActiveTime = errors.New("no active time")
-)
+var errNoActiveTime = errors.New("no active time")
 
 // systemdManager manages the collection of systemd service statistics.
 type systemdManager struct {
@@ -27,18 +26,48 @@ type systemdManager struct {
 	serviceStatsMap map[string]*systemd.Service
 	isRunning       bool
 	hasFreshStats   bool
+	patterns        []string
+}
+
+// isSystemdAvailable checks if systemd is used on the system to avoid unnecessary connection attempts (#1548)
+func isSystemdAvailable() bool {
+	paths := []string{
+		"/run/systemd/system",
+		"/run/dbus/system_bus_socket",
+		"/var/run/dbus/system_bus_socket",
+	}
+	for _, path := range paths {
+		if _, err := os.Stat(path); err == nil {
+			return true
+		}
+	}
+	if data, err := os.ReadFile("/proc/1/comm"); err == nil {
+		return strings.TrimSpace(string(data)) == "systemd"
+	}
+	return false
 }
 
 // newSystemdManager creates a new systemdManager.
 func newSystemdManager() (*systemdManager, error) {
+	if skipSystemd, _ := GetEnv("SKIP_SYSTEMD"); skipSystemd == "true" {
+		return nil, nil
+	}
+
+	// Check if systemd is available on the system before attempting connection
+	if !isSystemdAvailable() {
+		slog.Debug("Systemd not available")
+		return nil, nil
+	}
+
 	conn, err := dbus.NewSystemConnectionContext(context.Background())
 	if err != nil {
-		slog.Warn("Error connecting to systemd", "err", err, "ref", "https://beszel.dev/guide/systemd")
+		slog.Debug("Error connecting to systemd", "err", err, "ref", "https://beszel.dev/guide/systemd")
 		return nil, err
 	}
 
 	manager := &systemdManager{
 		serviceStatsMap: make(map[string]*systemd.Service),
+		patterns:        getServicePatterns(),
 	}
 
 	manager.startWorker(conn)
@@ -62,6 +91,24 @@ func (sm *systemdManager) startWorker(conn *dbus.Conn) {
 	}()
 }
 
+// getServiceStatsCount returns the number of systemd services.
+func (sm *systemdManager) getServiceStatsCount() int {
+	return len(sm.serviceStatsMap)
+}
+
+// getFailedServiceCount returns the number of systemd services in a failed state.
+func (sm *systemdManager) getFailedServiceCount() uint16 {
+	sm.Lock()
+	defer sm.Unlock()
+	count := uint16(0)
+	for _, service := range sm.serviceStatsMap {
+		if service.State == systemd.StatusFailed {
+			count++
+		}
+	}
+	return count
+}
+
 // getServiceStats collects statistics for all running systemd services.
 func (sm *systemdManager) getServiceStats(conn *dbus.Conn, refresh bool) []*systemd.Service {
 	// start := time.Now()
@@ -91,19 +138,33 @@ func (sm *systemdManager) getServiceStats(conn *dbus.Conn, refresh bool) []*syst
 		defer conn.Close()
 	}
 
-	units, err := conn.ListUnitsByPatternsContext(context.Background(), []string{"loaded"}, []string{"*.service"})
+	units, err := conn.ListUnitsByPatternsContext(context.Background(), []string{"loaded"}, sm.patterns)
 	if err != nil {
 		slog.Error("Error listing systemd service units", "err", err)
 		return nil
 	}
 
+	// Track which units are currently present to remove stale entries
+	currentUnits := make(map[string]struct{}, len(units))
+
 	for _, unit := range units {
+		currentUnits[unit.Name] = struct{}{}
 		service, err := sm.updateServiceStats(conn, unit)
 		if err != nil {
 			continue
 		}
 		services = append(services, service)
 	}
+
+	// Remove services that no longer exist in systemd
+	sm.Lock()
+	for unitName := range sm.serviceStatsMap {
+		if _, exists := currentUnits[unitName]; !exists {
+			delete(sm.serviceStatsMap, unitName)
+		}
+	}
+	sm.Unlock()
+
 	sm.hasFreshStats = true
 	return services
 }
@@ -227,3 +288,26 @@ func unescapeServiceName(name string) string {
 	}
 	return unescaped
 }
+
+// getServicePatterns returns the list of service patterns to match.
+// It reads from the SERVICE_PATTERNS environment variable if set,
+// otherwise defaults to "*service".
+func getServicePatterns() []string {
+	patterns := []string{}
+	if envPatterns, _ := GetEnv("SERVICE_PATTERNS"); envPatterns != "" {
+		for pattern := range strings.SplitSeq(envPatterns, ",") {
+			pattern = strings.TrimSpace(pattern)
+			if pattern == "" {
+				continue
+			}
+			if !strings.HasSuffix(pattern, ".service") {
+				pattern += ".service"
+			}
+			patterns = append(patterns, pattern)
+		}
+	}
+	if len(patterns) == 0 {
+		patterns = []string{"*.service"}
+	}
+	return patterns
+}

agent/systemd_nonlinux.go

@@ -23,6 +23,16 @@ func (sm *systemdManager) getServiceStats(conn any, refresh bool) []*systemd.Ser
 	return nil
 }
 
+// getServiceStatsCount returns 0 for non-linux systems.
+func (sm *systemdManager) getServiceStatsCount() int {
+	return 0
+}
+
+// getFailedServiceCount returns 0 for non-linux systems.
+func (sm *systemdManager) getFailedServiceCount() uint16 {
+	return 0
+}
+
 func (sm *systemdManager) getServiceDetails(string) (systemd.ServiceDetails, error) {
 	return nil, errors.New("systemd manager unavailable")
 }

agent/systemd_nonlinux_test.go

@@ -19,11 +19,11 @@ func TestSystemdManagerGetServiceStats(t *testing.T) {
 	assert.NoError(t, err)
 
 	// Test with refresh = true
-	result := manager.getServiceStats(true)
+	result := manager.getServiceStats("any-service", true)
 	assert.Nil(t, result)
 
 	// Test with refresh = false
-	result = manager.getServiceStats(false)
+	result = manager.getServiceStats("any-service", false)
 	assert.Nil(t, result)
 }
 

agent/systemd_test.go

@@ -3,6 +3,8 @@
 package agent
 
 import (
+	"os"
+	"strings"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -46,3 +48,141 @@ func TestUnescapeServiceNameInvalid(t *testing.T) {
 		})
 	}
 }
+
+func TestIsSystemdAvailable(t *testing.T) {
+	// Note: This test's result will vary based on the actual system running the tests
+	// On systems with systemd, it should return true
+	// On systems without systemd, it should return false
+	result := isSystemdAvailable()
+
+	// Check if either the /run/systemd/system directory exists or PID 1 is systemd
+	runSystemdExists := false
+	if _, err := os.Stat("/run/systemd/system"); err == nil {
+		runSystemdExists = true
+	}
+
+	pid1IsSystemd := false
+	if data, err := os.ReadFile("/proc/1/comm"); err == nil {
+		pid1IsSystemd = strings.TrimSpace(string(data)) == "systemd"
+	}
+
+	expected := runSystemdExists || pid1IsSystemd
+
+	assert.Equal(t, expected, result, "isSystemdAvailable should correctly detect systemd presence")
+
+	// Log the result for informational purposes
+	if result {
+		t.Log("Systemd is available on this system")
+	} else {
+		t.Log("Systemd is not available on this system")
+	}
+}
+
+func TestGetServicePatterns(t *testing.T) {
+	tests := []struct {
+		name           string
+		prefixedEnv    string
+		unprefixedEnv  string
+		expected       []string
+		cleanupEnvVars bool
+	}{
+		{
+			name:           "default when no env var set",
+			prefixedEnv:    "",
+			unprefixedEnv:  "",
+			expected:       []string{"*.service"},
+			cleanupEnvVars: true,
+		},
+		{
+			name:           "single pattern with prefixed env",
+			prefixedEnv:    "nginx",
+			unprefixedEnv:  "",
+			expected:       []string{"nginx.service"},
+			cleanupEnvVars: true,
+		},
+		{
+			name:           "single pattern with unprefixed env",
+			prefixedEnv:    "",
+			unprefixedEnv:  "nginx",
+			expected:       []string{"nginx.service"},
+			cleanupEnvVars: true,
+		},
+		{
+			name:           "prefixed env takes precedence",
+			prefixedEnv:    "nginx",
+			unprefixedEnv:  "apache",
+			expected:       []string{"nginx.service"},
+			cleanupEnvVars: true,
+		},
+		{
+			name:           "multiple patterns",
+			prefixedEnv:    "nginx,apache,postgresql",
+			unprefixedEnv:  "",
+			expected:       []string{"nginx.service", "apache.service", "postgresql.service"},
+			cleanupEnvVars: true,
+		},
+		{
+			name:           "patterns with .service suffix",
+			prefixedEnv:    "nginx.service,apache.service",
+			unprefixedEnv:  "",
+			expected:       []string{"nginx.service", "apache.service"},
+			cleanupEnvVars: true,
+		},
+		{
+			name:           "mixed patterns with and without suffix",
+			prefixedEnv:    "nginx.service,apache,postgresql.service",
+			unprefixedEnv:  "",
+			expected:       []string{"nginx.service", "apache.service", "postgresql.service"},
+			cleanupEnvVars: true,
+		},
+		{
+			name:           "patterns with whitespace",
+			prefixedEnv:    " nginx , apache , postgresql ",
+			unprefixedEnv:  "",
+			expected:       []string{"nginx.service", "apache.service", "postgresql.service"},
+			cleanupEnvVars: true,
+		},
+		{
+			name:           "empty patterns are skipped",
+			prefixedEnv:    "nginx,,apache,  ,postgresql",
+			unprefixedEnv:  "",
+			expected:       []string{"nginx.service", "apache.service", "postgresql.service"},
+			cleanupEnvVars: true,
+		},
+		{
+			name:           "wildcard pattern",
+			prefixedEnv:    "*nginx*,*apache*",
+			unprefixedEnv:  "",
+			expected:       []string{"*nginx*.service", "*apache*.service"},
+			cleanupEnvVars: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Clean up any existing env vars
+			os.Unsetenv("BESZEL_AGENT_SERVICE_PATTERNS")
+			os.Unsetenv("SERVICE_PATTERNS")
+
+			// Set up environment variables
+			if tt.prefixedEnv != "" {
+				os.Setenv("BESZEL_AGENT_SERVICE_PATTERNS", tt.prefixedEnv)
+			}
+			if tt.unprefixedEnv != "" {
+				os.Setenv("SERVICE_PATTERNS", tt.unprefixedEnv)
+			}
+
+			// Run the function
+			result := getServicePatterns()
+
+			// Verify results
+			assert.Equal(t, tt.expected, result, "Patterns should match expected values")
+
+			// Cleanup
+			if tt.cleanupEnvVars {
+				os.Unsetenv("BESZEL_AGENT_SERVICE_PATTERNS")
+				os.Unsetenv("SERVICE_PATTERNS")
+			}
+		})
+	}
+}

agent/test-data/amdgpu.ids

@@ -0,0 +1,700 @@
+# List of AMDGPU IDs
+#
+# Syntax:
+# device_id,	revision_id,	product_name        <-- single tab after comma
+
+1.0.0
+1114,	C2,	AMD Radeon 860M Graphics
+1114,	C3,	AMD Radeon 840M Graphics
+1114,	D2,	AMD Radeon 860M Graphics
+1114,	D3,	AMD Radeon 840M Graphics
+1309,	00,	AMD Radeon R7 Graphics
+130A,	00,	AMD Radeon R6 Graphics
+130B,	00,	AMD Radeon R4 Graphics
+130C,	00,	AMD Radeon R7 Graphics
+130D,	00,	AMD Radeon R6 Graphics
+130E,	00,	AMD Radeon R5 Graphics
+130F,	00,	AMD Radeon R7 Graphics
+130F,	D4,	AMD Radeon R7 Graphics
+130F,	D5,	AMD Radeon R7 Graphics
+130F,	D6,	AMD Radeon R7 Graphics
+130F,	D7,	AMD Radeon R7 Graphics
+1313,	00,	AMD Radeon R7 Graphics
+1313,	D4,	AMD Radeon R7 Graphics
+1313,	D5,	AMD Radeon R7 Graphics
+1313,	D6,	AMD Radeon R7 Graphics
+1315,	00,	AMD Radeon R5 Graphics
+1315,	D4,	AMD Radeon R5 Graphics
+1315,	D5,	AMD Radeon R5 Graphics
+1315,	D6,	AMD Radeon R5 Graphics
+1315,	D7,	AMD Radeon R5 Graphics
+1316,	00,	AMD Radeon R5 Graphics
+1318,	00,	AMD Radeon R5 Graphics
+131B,	00,	AMD Radeon R4 Graphics
+131C,	00,	AMD Radeon R7 Graphics
+131D,	00,	AMD Radeon R6 Graphics
+1435,	AE,	AMD Custom GPU 0932
+1506,	C1,	AMD Radeon 610M
+1506,	C2,	AMD Radeon 610M
+1506,	C3,	AMD Radeon 610M
+1506,	C4,	AMD Radeon 610M
+150E,	C1,	AMD Radeon 890M Graphics
+150E,	C4,	AMD Radeon 890M Graphics
+150E,	C5,	AMD Radeon 890M Graphics
+150E,	C6,	AMD Radeon 890M Graphics
+150E,	D1,	AMD Radeon 890M Graphics
+150E,	D2,	AMD Radeon 890M Graphics
+150E,	D3,	AMD Radeon 890M Graphics
+1586,	C1,	Radeon 8060S Graphics
+1586,	C2,	Radeon 8050S Graphics
+1586,	C4,	Radeon 8050S Graphics
+1586,	D1,	Radeon 8060S Graphics
+1586,	D2,	Radeon 8050S Graphics
+1586,	D4,	Radeon 8050S Graphics
+1586,	D5,	Radeon 8040S Graphics
+15BF,	00,	AMD Radeon 780M Graphics
+15BF,	01,	AMD Radeon 760M Graphics
+15BF,	02,	AMD Radeon 780M Graphics
+15BF,	03,	AMD Radeon 760M Graphics
+15BF,	C1,	AMD Radeon 780M Graphics
+15BF,	C2,	AMD Radeon 780M Graphics
+15BF,	C3,	AMD Radeon 760M Graphics
+15BF,	C4,	AMD Radeon 780M Graphics
+15BF,	C5,	AMD Radeon 740M Graphics
+15BF,	C6,	AMD Radeon 780M Graphics
+15BF,	C7,	AMD Radeon 780M Graphics
+15BF,	C8,	AMD Radeon 760M Graphics
+15BF,	C9,	AMD Radeon 780M Graphics
+15BF,	CA,	AMD Radeon 740M Graphics
+15BF,	CB,	AMD Radeon 760M Graphics
+15BF,	CC,	AMD Radeon 740M Graphics
+15BF,	CD,	AMD Radeon 760M Graphics
+15BF,	CF,	AMD Radeon 780M Graphics
+15BF,	D0,	AMD Radeon 780M Graphics
+15BF,	D1,	AMD Radeon 780M Graphics
+15BF,	D2,	AMD Radeon 780M Graphics
+15BF,	D3,	AMD Radeon 780M Graphics
+15BF,	D4,	AMD Radeon 780M Graphics
+15BF,	D5,	AMD Radeon 760M Graphics
+15BF,	D6,	AMD Radeon 760M Graphics
+15BF,	D7,	AMD Radeon 780M Graphics
+15BF,	D8,	AMD Radeon 740M Graphics
+15BF,	D9,	AMD Radeon 780M Graphics
+15BF,	DA,	AMD Radeon 780M Graphics
+15BF,	DB,	AMD Radeon 760M Graphics
+15BF,	DC,	AMD Radeon 760M Graphics
+15BF,	DD,	AMD Radeon 780M Graphics
+15BF,	DE,	AMD Radeon 740M Graphics
+15BF,	DF,	AMD Radeon 760M Graphics
+15BF,	F0,	AMD Radeon 760M Graphics
+15C8,	C1,	AMD Radeon 740M Graphics
+15C8,	C2,	AMD Radeon 740M Graphics
+15C8,	C3,	AMD Radeon 740M Graphics
+15C8,	C4,	AMD Radeon 740M Graphics
+15C8,	D1,	AMD Radeon 740M Graphics
+15C8,	D2,	AMD Radeon 740M Graphics
+15C8,	D3,	AMD Radeon 740M Graphics
+15C8,	D4,	AMD Radeon 740M Graphics
+15D8,	00,	AMD Radeon RX Vega 8 Graphics WS
+15D8,	91,	AMD Radeon Vega 3 Graphics
+15D8,	91,	AMD Ryzen Embedded R1606G with Radeon Vega Gfx
+15D8,	92,	AMD Radeon Vega 3 Graphics
+15D8,	92,	AMD Ryzen Embedded R1505G with Radeon Vega Gfx
+15D8,	93,	AMD Radeon Vega 1 Graphics
+15D8,	A1,	AMD Radeon Vega 10 Graphics
+15D8,	A2,	AMD Radeon Vega 8 Graphics
+15D8,	A3,	AMD Radeon Vega 6 Graphics
+15D8,	A4,	AMD Radeon Vega 3 Graphics
+15D8,	B1,	AMD Radeon Vega 10 Graphics
+15D8,	B2,	AMD Radeon Vega 8 Graphics
+15D8,	B3,	AMD Radeon Vega 6 Graphics
+15D8,	B4,	AMD Radeon Vega 3 Graphics
+15D8,	C1,	AMD Radeon Vega 10 Graphics
+15D8,	C2,	AMD Radeon Vega 8 Graphics
+15D8,	C3,	AMD Radeon Vega 6 Graphics
+15D8,	C4,	AMD Radeon Vega 3 Graphics
+15D8,	C5,	AMD Radeon Vega 3 Graphics
+15D8,	C8,	AMD Radeon Vega 11 Graphics
+15D8,	C9,	AMD Radeon Vega 8 Graphics
+15D8,	CA,	AMD Radeon Vega 11 Graphics
+15D8,	CB,	AMD Radeon Vega 8 Graphics
+15D8,	CC,	AMD Radeon Vega 3 Graphics
+15D8,	CE,	AMD Radeon Vega 3 Graphics
+15D8,	CF,	AMD Ryzen Embedded R1305G with Radeon Vega Gfx
+15D8,	D1,	AMD Radeon Vega 10 Graphics
+15D8,	D2,	AMD Radeon Vega 8 Graphics
+15D8,	D3,	AMD Radeon Vega 6 Graphics
+15D8,	D4,	AMD Radeon Vega 3 Graphics
+15D8,	D8,	AMD Radeon Vega 11 Graphics
+15D8,	D9,	AMD Radeon Vega 8 Graphics
+15D8,	DA,	AMD Radeon Vega 11 Graphics
+15D8,	DB,	AMD Radeon Vega 3 Graphics
+15D8,	DB,	AMD Radeon Vega 8 Graphics
+15D8,	DC,	AMD Radeon Vega 3 Graphics
+15D8,	DD,	AMD Radeon Vega 3 Graphics
+15D8,	DE,	AMD Radeon Vega 3 Graphics
+15D8,	DF,	AMD Radeon Vega 3 Graphics
+15D8,	E3,	AMD Radeon Vega 3 Graphics
+15D8,	E4,	AMD Ryzen Embedded R1102G with Radeon Vega Gfx
+15DD,	81,	AMD Ryzen Embedded V1807B with Radeon Vega Gfx
+15DD,	82,	AMD Ryzen Embedded V1756B with Radeon Vega Gfx
+15DD,	83,	AMD Ryzen Embedded V1605B with Radeon Vega Gfx
+15DD,	84,	AMD Radeon Vega 6 Graphics
+15DD,	85,	AMD Ryzen Embedded V1202B with Radeon Vega Gfx
+15DD,	86,	AMD Radeon Vega 11 Graphics
+15DD,	88,	AMD Radeon Vega 8 Graphics
+15DD,	C1,	AMD Radeon Vega 11 Graphics
+15DD,	C2,	AMD Radeon Vega 8 Graphics
+15DD,	C3,	AMD Radeon Vega 3 / 10 Graphics
+15DD,	C4,	AMD Radeon Vega 8 Graphics
+15DD,	C5,	AMD Radeon Vega 3 Graphics
+15DD,	C6,	AMD Radeon Vega 11 Graphics
+15DD,	C8,	AMD Radeon Vega 8 Graphics
+15DD,	C9,	AMD Radeon Vega 11 Graphics
+15DD,	CA,	AMD Radeon Vega 8 Graphics
+15DD,	CB,	AMD Radeon Vega 3 Graphics
+15DD,	CC,	AMD Radeon Vega 6 Graphics
+15DD,	CE,	AMD Radeon Vega 3 Graphics
+15DD,	CF,	AMD Radeon Vega 3 Graphics
+15DD,	D0,	AMD Radeon Vega 10 Graphics
+15DD,	D1,	AMD Radeon Vega 8 Graphics
+15DD,	D3,	AMD Radeon Vega 11 Graphics
+15DD,	D5,	AMD Radeon Vega 8 Graphics
+15DD,	D6,	AMD Radeon Vega 11 Graphics
+15DD,	D7,	AMD Radeon Vega 8 Graphics
+15DD,	D8,	AMD Radeon Vega 3 Graphics
+15DD,	D9,	AMD Radeon Vega 6 Graphics
+15DD,	E1,	AMD Radeon Vega 3 Graphics
+15DD,	E2,	AMD Radeon Vega 3 Graphics
+163F,	AE,	AMD Custom GPU 0405
+163F,	E1,	AMD Custom GPU 0405
+164E,	D8,	AMD Radeon 610M
+164E,	D9,	AMD Radeon 610M
+164E,	DA,	AMD Radeon 610M
+164E,	DB,	AMD Radeon 610M
+164E,	DC,	AMD Radeon 610M
+1681,	06,	AMD Radeon 680M
+1681,	07,	AMD Radeon 660M
+1681,	0A,	AMD Radeon 680M
+1681,	0B,	AMD Radeon 660M
+1681,	C7,	AMD Radeon 680M
+1681,	C8,	AMD Radeon 680M
+1681,	C9,	AMD Radeon 660M
+1900,	01,	AMD Radeon 780M Graphics
+1900,	02,	AMD Radeon 760M Graphics
+1900,	03,	AMD Radeon 780M Graphics
+1900,	04,	AMD Radeon 760M Graphics
+1900,	05,	AMD Radeon 780M Graphics
+1900,	06,	AMD Radeon 780M Graphics
+1900,	07,	AMD Radeon 760M Graphics
+1900,	B0,	AMD Radeon 780M Graphics
+1900,	B1,	AMD Radeon 780M Graphics
+1900,	B2,	AMD Radeon 780M Graphics
+1900,	B3,	AMD Radeon 780M Graphics
+1900,	B4,	AMD Radeon 780M Graphics
+1900,	B5,	AMD Radeon 780M Graphics
+1900,	B6,	AMD Radeon 780M Graphics
+1900,	B7,	AMD Radeon 760M Graphics
+1900,	B8,	AMD Radeon 760M Graphics
+1900,	B9,	AMD Radeon 780M Graphics
+1900,	BA,	AMD Radeon 780M Graphics
+1900,	BB,	AMD Radeon 780M Graphics
+1900,	C0,	AMD Radeon 780M Graphics
+1900,	C1,	AMD Radeon 760M Graphics
+1900,	C2,	AMD Radeon 780M Graphics
+1900,	C3,	AMD Radeon 760M Graphics
+1900,	C4,	AMD Radeon 780M Graphics
+1900,	C5,	AMD Radeon 780M Graphics
+1900,	C6,	AMD Radeon 760M Graphics
+1900,	C7,	AMD Radeon 780M Graphics
+1900,	C8,	AMD Radeon 760M Graphics
+1900,	C9,	AMD Radeon 780M Graphics
+1900,	CA,	AMD Radeon 760M Graphics
+1900,	CB,	AMD Radeon 780M Graphics
+1900,	CC,	AMD Radeon 780M Graphics
+1900,	CD,	AMD Radeon 760M Graphics
+1900,	CE,	AMD Radeon 780M Graphics
+1900,	CF,	AMD Radeon 760M Graphics
+1900,	D0,	AMD Radeon 780M Graphics
+1900,	D1,	AMD Radeon 760M Graphics
+1900,	D2,	AMD Radeon 780M Graphics
+1900,	D3,	AMD Radeon 760M Graphics
+1900,	D4,	AMD Radeon 780M Graphics
+1900,	D5,	AMD Radeon 780M Graphics
+1900,	D6,	AMD Radeon 760M Graphics
+1900,	D7,	AMD Radeon 780M Graphics
+1900,	D8,	AMD Radeon 760M Graphics
+1900,	D9,	AMD Radeon 780M Graphics
+1900,	DA,	AMD Radeon 760M Graphics
+1900,	DB,	AMD Radeon 780M Graphics
+1900,	DC,	AMD Radeon 780M Graphics
+1900,	DD,	AMD Radeon 760M Graphics
+1900,	DE,	AMD Radeon 780M Graphics
+1900,	DF,	AMD Radeon 760M Graphics
+1900,	F0,	AMD Radeon 780M Graphics
+1900,	F1,	AMD Radeon 780M Graphics
+1900,	F2,	AMD Radeon 780M Graphics
+1901,	C1,	AMD Radeon 740M Graphics
+1901,	C2,	AMD Radeon 740M Graphics
+1901,	C3,	AMD Radeon 740M Graphics
+1901,	C6,	AMD Radeon 740M Graphics
+1901,	C7,	AMD Radeon 740M Graphics
+1901,	C8,	AMD Radeon 740M Graphics
+1901,	C9,	AMD Radeon 740M Graphics
+1901,	CA,	AMD Radeon 740M Graphics
+1901,	D1,	AMD Radeon 740M Graphics
+1901,	D2,	AMD Radeon 740M Graphics
+1901,	D3,	AMD Radeon 740M Graphics
+1901,	D4,	AMD Radeon 740M Graphics
+1901,	D5,	AMD Radeon 740M Graphics
+1901,	D6,	AMD Radeon 740M Graphics
+1901,	D7,	AMD Radeon 740M Graphics
+1901,	D8,	AMD Radeon 740M Graphics
+6600,	00,	AMD Radeon HD 8600 / 8700M
+6600,	81,	AMD Radeon R7 M370
+6601,	00,	AMD Radeon HD 8500M / 8700M
+6604,	00,	AMD Radeon R7 M265 Series
+6604,	81,	AMD Radeon R7 M350
+6605,	00,	AMD Radeon R7 M260 Series
+6605,	81,	AMD Radeon R7 M340
+6606,	00,	AMD Radeon HD 8790M
+6607,	00,	AMD Radeon R5 M240
+6608,	00,	AMD FirePro W2100
+6610,	00,	AMD Radeon R7 200 Series
+6610,	81,	AMD Radeon R7 350
+6610,	83,	AMD Radeon R5 340
+6610,	87,	AMD Radeon R7 200 Series
+6611,	00,	AMD Radeon R7 200 Series
+6611,	87,	AMD Radeon R7 200 Series
+6613,	00,	AMD Radeon R7 200 Series
+6617,	00,	AMD Radeon R7 240 Series
+6617,	87,	AMD Radeon R7 200 Series
+6617,	C7,	AMD Radeon R7 240 Series
+6640,	00,	AMD Radeon HD 8950
+6640,	80,	AMD Radeon R9 M380
+6646,	00,	AMD Radeon R9 M280X
+6646,	80,	AMD Radeon R9 M385
+6646,	80,	AMD Radeon R9 M470X
+6647,	00,	AMD Radeon R9 M200X Series
+6647,	80,	AMD Radeon R9 M380
+6649,	00,	AMD FirePro W5100
+6658,	00,	AMD Radeon R7 200 Series
+665C,	00,	AMD Radeon HD 7700 Series
+665D,	00,	AMD Radeon R7 200 Series
+665F,	81,	AMD Radeon R7 360 Series
+6660,	00,	AMD Radeon HD 8600M Series
+6660,	81,	AMD Radeon R5 M335
+6660,	83,	AMD Radeon R5 M330
+6663,	00,	AMD Radeon HD 8500M Series
+6663,	83,	AMD Radeon R5 M320
+6664,	00,	AMD Radeon R5 M200 Series
+6665,	00,	AMD Radeon R5 M230 Series
+6665,	83,	AMD Radeon R5 M320
+6665,	C3,	AMD Radeon R5 M435
+6666,	00,	AMD Radeon R5 M200 Series
+6667,	00,	AMD Radeon R5 M200 Series
+666F,	00,	AMD Radeon HD 8500M
+66A1,	02,	AMD Instinct MI60 / MI50
+66A1,	06,	AMD Radeon Pro VII
+66AF,	C1,	AMD Radeon VII
+6780,	00,	AMD FirePro W9000
+6784,	00,	ATI FirePro V (FireGL V) Graphics Adapter
+6788,	00,	ATI FirePro V (FireGL V) Graphics Adapter
+678A,	00,	AMD FirePro W8000
+6798,	00,	AMD Radeon R9 200 / HD 7900 Series
+6799,	00,	AMD Radeon HD 7900 Series
+679A,	00,	AMD Radeon HD 7900 Series
+679B,	00,	AMD Radeon HD 7900 Series
+679E,	00,	AMD Radeon HD 7800 Series
+67A0,	00,	AMD Radeon FirePro W9100
+67A1,	00,	AMD Radeon FirePro W8100
+67B0,	00,	AMD Radeon R9 200 Series
+67B0,	80,	AMD Radeon R9 390 Series
+67B1,	00,	AMD Radeon R9 200 Series
+67B1,	80,	AMD Radeon R9 390 Series
+67B9,	00,	AMD Radeon R9 200 Series
+67C0,	00,	AMD Radeon Pro WX 7100 Graphics
+67C0,	80,	AMD Radeon E9550
+67C2,	01,	AMD Radeon Pro V7350x2
+67C2,	02,	AMD Radeon Pro V7300X
+67C4,	00,	AMD Radeon Pro WX 7100 Graphics
+67C4,	80,	AMD Radeon E9560 / E9565 Graphics
+67C7,	00,	AMD Radeon Pro WX 5100 Graphics
+67C7,	80,	AMD Radeon E9390 Graphics
+67D0,	01,	AMD Radeon Pro V7350x2
+67D0,	02,	AMD Radeon Pro V7300X
+67DF,	C0,	AMD Radeon Pro 580X
+67DF,	C1,	AMD Radeon RX 580 Series
+67DF,	C2,	AMD Radeon RX 570 Series
+67DF,	C3,	AMD Radeon RX 580 Series
+67DF,	C4,	AMD Radeon RX 480 Graphics
+67DF,	C5,	AMD Radeon RX 470 Graphics
+67DF,	C6,	AMD Radeon RX 570 Series
+67DF,	C7,	AMD Radeon RX 480 Graphics
+67DF,	CF,	AMD Radeon RX 470 Graphics
+67DF,	D7,	AMD Radeon RX 470 Graphics
+67DF,	E0,	AMD Radeon RX 470 Series
+67DF,	E1,	AMD Radeon RX 590 Series
+67DF,	E3,	AMD Radeon RX Series
+67DF,	E7,	AMD Radeon RX 580 Series
+67DF,	EB,	AMD Radeon Pro 580X
+67DF,	EF,	AMD Radeon RX 570 Series
+67DF,	F7,	AMD Radeon RX P30PH
+67DF,	FF,	AMD Radeon RX 470 Series
+67E0,	00,	AMD Radeon Pro WX Series
+67E3,	00,	AMD Radeon Pro WX 4100
+67E8,	00,	AMD Radeon Pro WX Series
+67E8,	01,	AMD Radeon Pro WX Series
+67E8,	80,	AMD Radeon E9260 Graphics
+67EB,	00,	AMD Radeon Pro V5300X
+67EF,	C0,	AMD Radeon RX Graphics
+67EF,	C1,	AMD Radeon RX 460 Graphics
+67EF,	C2,	AMD Radeon Pro Series
+67EF,	C3,	AMD Radeon RX Series
+67EF,	C5,	AMD Radeon RX 460 Graphics
+67EF,	C7,	AMD Radeon RX Graphics
+67EF,	CF,	AMD Radeon RX 460 Graphics
+67EF,	E0,	AMD Radeon RX 560 Series
+67EF,	E1,	AMD Radeon RX Series
+67EF,	E2,	AMD Radeon RX 560X
+67EF,	E3,	AMD Radeon RX Series
+67EF,	E5,	AMD Radeon RX 560 Series
+67EF,	E7,	AMD Radeon RX 560 Series
+67EF,	EF,	AMD Radeon 550 Series
+67EF,	FF,	AMD Radeon RX 460 Graphics
+67FF,	C0,	AMD Radeon Pro 465
+67FF,	C1,	AMD Radeon RX 560 Series
+67FF,	CF,	AMD Radeon RX 560 Series
+67FF,	EF,	AMD Radeon RX 560 Series
+67FF,	FF,	AMD Radeon RX 550 Series
+6800,	00,	AMD Radeon HD 7970M
+6801,	00,	AMD Radeon HD 8970M
+6806,	00,	AMD Radeon R9 M290X
+6808,	00,	AMD FirePro W7000
+6808,	00,	ATI FirePro V (FireGL V) Graphics Adapter
+6809,	00,	ATI FirePro W5000
+6810,	00,	AMD Radeon R9 200 Series
+6810,	81,	AMD Radeon R9 370 Series
+6811,	00,	AMD Radeon R9 200 Series
+6811,	81,	AMD Radeon R7 370 Series
+6818,	00,	AMD Radeon HD 7800 Series
+6819,	00,	AMD Radeon HD 7800 Series
+6820,	00,	AMD Radeon R9 M275X
+6820,	81,	AMD Radeon R9 M375
+6820,	83,	AMD Radeon R9 M375X
+6821,	00,	AMD Radeon R9 M200X Series
+6821,	83,	AMD Radeon R9 M370X
+6821,	87,	AMD Radeon R7 M380
+6822,	00,	AMD Radeon E8860
+6823,	00,	AMD Radeon R9 M200X Series
+6825,	00,	AMD Radeon HD 7800M Series
+6826,	00,	AMD Radeon HD 7700M Series
+6827,	00,	AMD Radeon HD 7800M Series
+6828,	00,	AMD FirePro W600
+682B,	00,	AMD Radeon HD 8800M Series
+682B,	87,	AMD Radeon R9 M360
+682C,	00,	AMD FirePro W4100
+682D,	00,	AMD Radeon HD 7700M Series
+682F,	00,	AMD Radeon HD 7700M Series
+6830,	00,	AMD Radeon 7800M Series
+6831,	00,	AMD Radeon 7700M Series
+6835,	00,	AMD Radeon R7 Series / HD 9000 Series
+6837,	00,	AMD Radeon HD 7700 Series
+683D,	00,	AMD Radeon HD 7700 Series
+683F,	00,	AMD Radeon HD 7700 Series
+684C,	00,	ATI FirePro V (FireGL V) Graphics Adapter
+6860,	00,	AMD Radeon Instinct MI25
+6860,	01,	AMD Radeon Instinct MI25
+6860,	02,	AMD Radeon Instinct MI25
+6860,	03,	AMD Radeon Pro V340
+6860,	04,	AMD Radeon Instinct MI25x2
+6860,	07,	AMD Radeon Pro V320
+6861,	00,	AMD Radeon Pro WX 9100
+6862,	00,	AMD Radeon Pro SSG
+6863,	00,	AMD Radeon Vega Frontier Edition
+6864,	03,	AMD Radeon Pro V340
+6864,	04,	AMD Radeon Instinct MI25x2
+6864,	05,	AMD Radeon Pro V340
+6868,	00,	AMD Radeon Pro WX 8200
+686C,	00,	AMD Radeon Instinct MI25 MxGPU
+686C,	01,	AMD Radeon Instinct MI25 MxGPU
+686C,	02,	AMD Radeon Instinct MI25 MxGPU
+686C,	03,	AMD Radeon Pro V340 MxGPU
+686C,	04,	AMD Radeon Instinct MI25x2 MxGPU
+686C,	05,	AMD Radeon Pro V340L MxGPU
+686C,	06,	AMD Radeon Instinct MI25 MxGPU
+687F,	01,	AMD Radeon RX Vega
+687F,	C0,	AMD Radeon RX Vega
+687F,	C1,	AMD Radeon RX Vega
+687F,	C3,	AMD Radeon RX Vega
+687F,	C7,	AMD Radeon RX Vega
+6900,	00,	AMD Radeon R7 M260
+6900,	81,	AMD Radeon R7 M360
+6900,	83,	AMD Radeon R7 M340
+6900,	C1,	AMD Radeon R5 M465 Series
+6900,	C3,	AMD Radeon R5 M445 Series
+6900,	D1,	AMD Radeon 530 Series
+6900,	D3,	AMD Radeon 530 Series
+6901,	00,	AMD Radeon R5 M255
+6902,	00,	AMD Radeon Series
+6907,	00,	AMD Radeon R5 M255
+6907,	87,	AMD Radeon R5 M315
+6920,	00,	AMD Radeon R9 M395X
+6920,	01,	AMD Radeon R9 M390X
+6921,	00,	AMD Radeon R9 M390X
+6929,	00,	AMD FirePro S7150
+6929,	01,	AMD FirePro S7100X
+692B,	00,	AMD FirePro W7100
+6938,	00,	AMD Radeon R9 200 Series
+6938,	F0,	AMD Radeon R9 200 Series
+6938,	F1,	AMD Radeon R9 380 Series
+6939,	00,	AMD Radeon R9 200 Series
+6939,	F0,	AMD Radeon R9 200 Series
+6939,	F1,	AMD Radeon R9 380 Series
+694C,	C0,	AMD Radeon RX Vega M GH Graphics
+694E,	C0,	AMD Radeon RX Vega M GL Graphics
+6980,	00,	AMD Radeon Pro WX 3100
+6981,	00,	AMD Radeon Pro WX 3200 Series
+6981,	01,	AMD Radeon Pro WX 3200 Series
+6981,	10,	AMD Radeon Pro WX 3200 Series
+6985,	00,	AMD Radeon Pro WX 3100
+6986,	00,	AMD Radeon Pro WX 2100
+6987,	80,	AMD Embedded Radeon E9171
+6987,	C0,	AMD Radeon 550X Series
+6987,	C1,	AMD Radeon RX 640
+6987,	C3,	AMD Radeon 540X Series
+6987,	C7,	AMD Radeon 540
+6995,	00,	AMD Radeon Pro WX 2100
+6997,	00,	AMD Radeon Pro WX 2100
+699F,	81,	AMD Embedded Radeon E9170 Series
+699F,	C0,	AMD Radeon 500 Series
+699F,	C1,	AMD Radeon 540 Series
+699F,	C3,	AMD Radeon 500 Series
+699F,	C7,	AMD Radeon RX 550 / 550 Series
+699F,	C9,	AMD Radeon 540
+6FDF,	E7,	AMD Radeon RX 590 GME
+6FDF,	EF,	AMD Radeon RX 580 2048SP
+7300,	C1,	AMD FirePro S9300 x2
+7300,	C8,	AMD Radeon R9 Fury Series
+7300,	C9,	AMD Radeon Pro Duo
+7300,	CA,	AMD Radeon R9 Fury Series
+7300,	CB,	AMD Radeon R9 Fury Series
+7312,	00,	AMD Radeon Pro W5700
+731E,	C6,	AMD Radeon RX 5700XTB
+731E,	C7,	AMD Radeon RX 5700B
+731F,	C0,	AMD Radeon RX 5700 XT 50th Anniversary
+731F,	C1,	AMD Radeon RX 5700 XT
+731F,	C2,	AMD Radeon RX 5600M
+731F,	C3,	AMD Radeon RX 5700M
+731F,	C4,	AMD Radeon RX 5700
+731F,	C5,	AMD Radeon RX 5700 XT
+731F,	CA,	AMD Radeon RX 5600 XT
+731F,	CB,	AMD Radeon RX 5600 OEM
+7340,	C1,	AMD Radeon RX 5500M
+7340,	C3,	AMD Radeon RX 5300M
+7340,	C5,	AMD Radeon RX 5500 XT
+7340,	C7,	AMD Radeon RX 5500
+7340,	C9,	AMD Radeon RX 5500XTB
+7340,	CF,	AMD Radeon RX 5300
+7341,	00,	AMD Radeon Pro W5500
+7347,	00,	AMD Radeon Pro W5500M
+7360,	41,	AMD Radeon Pro 5600M
+7360,	C3,	AMD Radeon Pro V520
+7362,	C1,	AMD Radeon Pro V540
+7362,	C3,	AMD Radeon Pro V520
+738C,	01,	AMD Instinct MI100
+73A1,	00,	AMD Radeon Pro V620
+73A3,	00,	AMD Radeon Pro W6800
+73A5,	C0,	AMD Radeon RX 6950 XT
+73AE,	00,	AMD Radeon Pro V620 MxGPU
+73AF,	C0,	AMD Radeon RX 6900 XT
+73BF,	C0,	AMD Radeon RX 6900 XT
+73BF,	C1,	AMD Radeon RX 6800 XT
+73BF,	C3,	AMD Radeon RX 6800
+73DF,	C0,	AMD Radeon RX 6750 XT
+73DF,	C1,	AMD Radeon RX 6700 XT
+73DF,	C2,	AMD Radeon RX 6800M
+73DF,	C3,	AMD Radeon RX 6800M
+73DF,	C5,	AMD Radeon RX 6700 XT
+73DF,	CF,	AMD Radeon RX 6700M
+73DF,	D5,	AMD Radeon RX 6750 GRE 12GB
+73DF,	D7,	AMD TDC-235
+73DF,	DF,	AMD Radeon RX 6700
+73DF,	E5,	AMD Radeon RX 6750 GRE 12GB
+73DF,	FF,	AMD Radeon RX 6700
+73E0,	00,	AMD Radeon RX 6600M
+73E1,	00,	AMD Radeon Pro W6600M
+73E3,	00,	AMD Radeon Pro W6600
+73EF,	C0,	AMD Radeon RX 6800S
+73EF,	C1,	AMD Radeon RX 6650 XT
+73EF,	C2,	AMD Radeon RX 6700S
+73EF,	C3,	AMD Radeon RX 6650M
+73EF,	C4,	AMD Radeon RX 6650M XT
+73FF,	C1,	AMD Radeon RX 6600 XT
+73FF,	C3,	AMD Radeon RX 6600M
+73FF,	C7,	AMD Radeon RX 6600
+73FF,	CB,	AMD Radeon RX 6600S
+73FF,	CF,	AMD Radeon RX 6600 LE
+73FF,	DF,	AMD Radeon RX 6750 GRE 10GB
+7408,	00,	AMD Instinct MI250X
+740C,	01,	AMD Instinct MI250X / MI250
+740F,	02,	AMD Instinct MI210
+7421,	00,	AMD Radeon Pro W6500M
+7422,	00,	AMD Radeon Pro W6400
+7423,	00,	AMD Radeon Pro W6300M
+7423,	01,	AMD Radeon Pro W6300
+7424,	00,	AMD Radeon RX 6300
+743F,	C1,	AMD Radeon RX 6500 XT
+743F,	C3,	AMD Radeon RX 6500
+743F,	C3,	AMD Radeon RX 6500M
+743F,	C7,	AMD Radeon RX 6400
+743F,	C8,	AMD Radeon RX 6500M
+743F,	CC,	AMD Radeon 6550S
+743F,	CE,	AMD Radeon RX 6450M
+743F,	CF,	AMD Radeon RX 6300M
+743F,	D3,	AMD Radeon RX 6550M
+743F,	D7,	AMD Radeon RX 6400
+7448,	00,	AMD Radeon Pro W7900
+7449,	00,	AMD Radeon Pro W7800 48GB
+744A,	00,	AMD Radeon Pro W7900 Dual Slot
+744B,	00,	AMD Radeon Pro W7900D
+744C,	C8,	AMD Radeon RX 7900 XTX
+744C,	CC,	AMD Radeon RX 7900 XT
+744C,	CE,	AMD Radeon RX 7900 GRE
+744C,	CF,	AMD Radeon RX 7900M
+745E,	CC,	AMD Radeon Pro W7800
+7460,	00,	AMD Radeon Pro V710
+7461,	00,	AMD Radeon Pro V710 MxGPU
+7470,	00,	AMD Radeon Pro W7700
+747E,	C8,	AMD Radeon RX 7800 XT
+747E,	D8,	AMD Radeon RX 7800M
+747E,	DB,	AMD Radeon RX 7700
+747E,	FF,	AMD Radeon RX 7700 XT
+7480,	00,	AMD Radeon Pro W7600
+7480,	C0,	AMD Radeon RX 7600 XT
+7480,	C1,	AMD Radeon RX 7700S
+7480,	C2,	AMD Radeon RX 7650 GRE
+7480,	C3,	AMD Radeon RX 7600S
+7480,	C7,	AMD Radeon RX 7600M XT
+7480,	CF,	AMD Radeon RX 7600
+7481,   C7,     AMD Steam Machine
+7483,	CF,	AMD Radeon RX 7600M
+7489,	00,	AMD Radeon Pro W7500
+7499,	00,	AMD Radeon Pro W7400
+7499,	C0,	AMD Radeon RX 7400
+7499,	C1,	AMD Radeon RX 7300
+74A0,	00,	AMD Instinct MI300A
+74A1,	00,	AMD Instinct MI300X
+74A2,	00,	AMD Instinct MI308X
+74A5,	00,	AMD Instinct MI325X
+74A8,	00,	AMD Instinct MI308X HF
+74A9,	00,	AMD Instinct MI300X HF
+74B5,	00,	AMD Instinct MI300X VF
+74B6,	00,	AMD Instinct MI308X
+74BD,	00,	AMD Instinct MI300X HF
+7550,	C0,	AMD Radeon RX 9070 XT
+7550,	C2,	AMD Radeon RX 9070 GRE
+7550,	C3,	AMD Radeon RX 9070
+7551,	C0,	AMD Radeon AI PRO R9700
+7590,	C0,	AMD Radeon RX 9060 XT
+7590,	C7,	AMD Radeon RX 9060
+75A0,	C0,	AMD Instinct MI350X
+75A3,	C0,	AMD Instinct MI355X
+75B0,	C0,	AMD Instinct MI350X VF
+75B3,	C0,	AMD Instinct MI355X VF
+9830,	00,	AMD Radeon HD 8400 / R3 Series
+9831,	00,	AMD Radeon HD 8400E
+9832,	00,	AMD Radeon HD 8330
+9833,	00,	AMD Radeon HD 8330E
+9834,	00,	AMD Radeon HD 8210
+9835,	00,	AMD Radeon HD 8210E
+9836,	00,	AMD Radeon HD 8200 / R3 Series
+9837,	00,	AMD Radeon HD 8280E
+9838,	00,	AMD Radeon HD 8200 / R3 series
+9839,	00,	AMD Radeon HD 8180
+983D,	00,	AMD Radeon HD 8250
+9850,	00,	AMD Radeon R3 Graphics
+9850,	03,	AMD Radeon R3 Graphics
+9850,	40,	AMD Radeon R2 Graphics
+9850,	45,	AMD Radeon R3 Graphics
+9851,	00,	AMD Radeon R4 Graphics
+9851,	01,	AMD Radeon R5E Graphics
+9851,	05,	AMD Radeon R5 Graphics
+9851,	06,	AMD Radeon R5E Graphics
+9851,	40,	AMD Radeon R4 Graphics
+9851,	45,	AMD Radeon R5 Graphics
+9852,	00,	AMD Radeon R2 Graphics
+9852,	40,	AMD Radeon E1 Graphics
+9853,	00,	AMD Radeon R2 Graphics
+9853,	01,	AMD Radeon R4E Graphics
+9853,	03,	AMD Radeon R2 Graphics
+9853,	05,	AMD Radeon R1E Graphics
+9853,	06,	AMD Radeon R1E Graphics
+9853,	07,	AMD Radeon R1E Graphics
+9853,	08,	AMD Radeon R1E Graphics
+9853,	40,	AMD Radeon R2 Graphics
+9854,	00,	AMD Radeon R3 Graphics
+9854,	01,	AMD Radeon R3E Graphics
+9854,	02,	AMD Radeon R3 Graphics
+9854,	05,	AMD Radeon R2 Graphics
+9854,	06,	AMD Radeon R4 Graphics
+9854,	07,	AMD Radeon R3 Graphics
+9855,	02,	AMD Radeon R6 Graphics
+9855,	05,	AMD Radeon R4 Graphics
+9856,	00,	AMD Radeon R2 Graphics
+9856,	01,	AMD Radeon R2E Graphics
+9856,	02,	AMD Radeon R2 Graphics
+9856,	05,	AMD Radeon R1E Graphics
+9856,	06,	AMD Radeon R2 Graphics
+9856,	07,	AMD Radeon R1E Graphics
+9856,	08,	AMD Radeon R1E Graphics
+9856,	13,	AMD Radeon R1E Graphics
+9874,	81,	AMD Radeon R6 Graphics
+9874,	84,	AMD Radeon R7 Graphics
+9874,	85,	AMD Radeon R6 Graphics
+9874,	87,	AMD Radeon R5 Graphics
+9874,	88,	AMD Radeon R7E Graphics
+9874,	89,	AMD Radeon R6E Graphics
+9874,	C4,	AMD Radeon R7 Graphics
+9874,	C5,	AMD Radeon R6 Graphics
+9874,	C6,	AMD Radeon R6 Graphics
+9874,	C7,	AMD Radeon R5 Graphics
+9874,	C8,	AMD Radeon R7 Graphics
+9874,	C9,	AMD Radeon R7 Graphics
+9874,	CA,	AMD Radeon R5 Graphics
+9874,	CB,	AMD Radeon R5 Graphics
+9874,	CC,	AMD Radeon R7 Graphics
+9874,	CD,	AMD Radeon R7 Graphics
+9874,	CE,	AMD Radeon R5 Graphics
+9874,	E1,	AMD Radeon R7 Graphics
+9874,	E2,	AMD Radeon R7 Graphics
+9874,	E3,	AMD Radeon R7 Graphics
+9874,	E4,	AMD Radeon R7 Graphics
+9874,	E5,	AMD Radeon R5 Graphics
+9874,	E6,	AMD Radeon R5 Graphics
+98E4,	80,	AMD Radeon R5E Graphics
+98E4,	81,	AMD Radeon R4E Graphics
+98E4,	83,	AMD Radeon R2E Graphics
+98E4,	84,	AMD Radeon R2E Graphics
+98E4,	86,	AMD Radeon R1E Graphics
+98E4,	C0,	AMD Radeon R4 Graphics
+98E4,	C1,	AMD Radeon R5 Graphics
+98E4,	C2,	AMD Radeon R4 Graphics
+98E4,	C4,	AMD Radeon R5 Graphics
+98E4,	C6,	AMD Radeon R5 Graphics
+98E4,	C8,	AMD Radeon R4 Graphics
+98E4,	C9,	AMD Radeon R4 Graphics
+98E4,	CA,	AMD Radeon R5 Graphics
+98E4,	D0,	AMD Radeon R2 Graphics
+98E4,	D1,	AMD Radeon R2 Graphics
+98E4,	D2,	AMD Radeon R2 Graphics
+98E4,	D4,	AMD Radeon R2 Graphics
+98E4,	D9,	AMD Radeon R5 Graphics
+98E4,	DA,	AMD Radeon R5 Graphics
+98E4,	DB,	AMD Radeon R3 Graphics
+98E4,	E1,	AMD Radeon R3 Graphics
+98E4,	E2,	AMD Radeon R3 Graphics
+98E4,	E9,	AMD Radeon R4 Graphics
+98E4,	EA,	AMD Radeon R4 Graphics
+98E4,	EB,	AMD Radeon R3 Graphics
+98E4,	EB,	AMD Radeon R4 Graphics

agent/test-data/nvtop.json

@@ -0,0 +1,34 @@
+[
+  {
+   "device_name": "NVIDIA GeForce RTX 3050 Ti Laptop GPU",
+   "gpu_clock": "1485MHz",
+   "mem_clock": "6001MHz",
+   "temp": "48C",
+   "fan_speed": null,
+   "power_draw": "13W",
+   "gpu_util": "5%",
+   "encode": "0%",
+   "decode": "0%",
+   "mem_util": "8%",
+   "mem_total": "4294967296",
+   "mem_used": "349372416",
+   "mem_free": "3945594880",
+   "processes" : []
+  },
+  {
+   "device_name": "AMD Radeon 680M",
+   "gpu_clock": "2200MHz",
+   "mem_clock": "2400MHz",
+   "temp": "48C",
+   "fan_speed": "CPU Fan",
+   "power_draw": "9W",
+   "gpu_util": "12%",
+   "encode": null,
+   "decode": "0%",
+   "mem_util": "7%",
+   "mem_total": "16929173504",
+   "mem_used": "1213784064",
+   "mem_free": "15715389440",
+   "processes" : []
+  }
+]

agent/test-data/system_info.json

@@ -0,0 +1,17 @@
+{
+  "ID": "7TRN:IPZB:QYBB:VPBQ:UMPP:KARE:6ZNR:XE6T:7EWV:PKF4:ZOJD:TPYS",
+  "Containers": 14,
+  "ContainersRunning": 3,
+  "ContainersPaused": 1,
+  "ContainersStopped": 10,
+  "Images": 508,
+  "Driver": "overlay2",
+  "KernelVersion": "6.8.0-31-generic",
+  "OperatingSystem": "Ubuntu 24.04 LTS",
+  "OSVersion": "24.04",
+  "OSType": "linux",
+  "Architecture": "x86_64",
+  "NCPU": 4,
+  "MemTotal": 2095882240,
+  "ServerVersion": "27.0.1"
+}

agent/update.go

@@ -1,12 +1,10 @@
 package agent
 
 import (
-	"fmt"
 	"log"
 	"os"
 	"os/exec"
 	"runtime"
-	"strings"
 
 	"github.com/henrygd/beszel/internal/ghupdate"
 )
@@ -65,9 +63,9 @@ func detectRestarter() restarter {
 	if path, err := exec.LookPath("rc-service"); err == nil {
 		return &openRCRestarter{cmd: path}
 	}
-    if path, err := exec.LookPath("procd"); err == nil {
-        return &openWRTRestarter{cmd: path}
-    }
+	if path, err := exec.LookPath("procd"); err == nil {
+		return &openWRTRestarter{cmd: path}
+	}
 	if path, err := exec.LookPath("service"); err == nil {
 		if runtime.GOOS == "freebsd" {
 			return &freeBSDRestarter{cmd: path}
@@ -81,7 +79,7 @@ func detectRestarter() restarter {
 func Update(useMirror bool) error {
 	exePath, _ := os.Executable()
 
-	dataDir, err := getDataDir()
+	dataDir, err := GetDataDir()
 	if err != nil {
 		dataDir = os.TempDir()
 	}
@@ -108,12 +106,12 @@ func Update(useMirror bool) error {
 		}
 	}
 
-	// 6) Fix SELinux context if necessary
-	if err := handleSELinuxContext(exePath); err != nil {
+	// Fix SELinux context if necessary
+	if err := ghupdate.HandleSELinuxContext(exePath); err != nil {
 		ghupdate.ColorPrintf(ghupdate.ColorYellow, "Warning: SELinux context handling: %v", err)
 	}
 
-	// 7) Restart service if running under a recognised init system
+	// Restart service if running under a recognised init system
 	if r := detectRestarter(); r != nil {
 		if err := r.Restart(); err != nil {
 			ghupdate.ColorPrintf(ghupdate.ColorYellow, "Warning: failed to restart service: %v", err)
@@ -127,42 +125,3 @@ func Update(useMirror bool) error {
 
 	return nil
 }
-
-// handleSELinuxContext restores or applies the correct SELinux label to the binary.
-func handleSELinuxContext(path string) error {
-	out, err := exec.Command("getenforce").Output()
-	if err != nil {
-		// SELinux not enabled or getenforce not available
-		return nil
-	}
-	state := strings.TrimSpace(string(out))
-	if state == "Disabled" {
-		return nil
-	}
-
-	ghupdate.ColorPrint(ghupdate.ColorYellow, "SELinux is enabled; applying context…")
-	var errs []string
-
-	// Try persistent context via semanage+restorecon
-	if semanagePath, err := exec.LookPath("semanage"); err == nil {
-		if err := exec.Command(semanagePath, "fcontext", "-a", "-t", "bin_t", path).Run(); err != nil {
-			errs = append(errs, "semanage fcontext failed: "+err.Error())
-		} else if restoreconPath, err := exec.LookPath("restorecon"); err == nil {
-			if err := exec.Command(restoreconPath, "-v", path).Run(); err != nil {
-				errs = append(errs, "restorecon failed: "+err.Error())
-			}
-		}
-	}
-
-	// Fallback to temporary context via chcon
-	if chconPath, err := exec.LookPath("chcon"); err == nil {
-		if err := exec.Command(chconPath, "-t", "bin_t", path).Run(); err != nil {
-			errs = append(errs, "chcon failed: "+err.Error())
-		}
-	}
-
-	if len(errs) > 0 {
-		return fmt.Errorf("SELinux context errors: %s", strings.Join(errs, "; "))
-	}
-	return nil
-}

beszel.go

@@ -6,7 +6,7 @@ import "github.com/blang/semver"
 
 const (
 	// Version is the current version of the application.
-	Version = "0.16.0"
+	Version = "0.18.4"
 	// AppName is the name of the application.
 	AppName = "beszel"
 )

go.mod

@@ -1,25 +1,27 @@
 module github.com/henrygd/beszel
 
-go 1.25.3
+go 1.26.0
 
 require (
 	github.com/blang/semver v3.5.1+incompatible
-	github.com/coreos/go-systemd/v22 v22.6.0
+	github.com/coreos/go-systemd/v22 v22.7.0
 	github.com/distatus/battery v0.11.0
+	github.com/ebitengine/purego v0.9.1
 	github.com/fxamacker/cbor/v2 v2.9.0
 	github.com/gliderlabs/ssh v0.3.8
 	github.com/google/uuid v1.6.0
 	github.com/lxzan/gws v1.8.9
-	github.com/nicholas-fedor/shoutrrr v0.12.0
-	github.com/pocketbase/dbx v1.11.0
-	github.com/pocketbase/pocketbase v0.32.0
-	github.com/shirou/gopsutil/v4 v4.25.10
+	github.com/nicholas-fedor/shoutrrr v0.13.2
+	github.com/pocketbase/dbx v1.12.0
+	github.com/pocketbase/pocketbase v0.36.4
+	github.com/shirou/gopsutil/v4 v4.26.1
 	github.com/spf13/cast v1.10.0
-	github.com/spf13/cobra v1.10.1
+	github.com/spf13/cobra v1.10.2
 	github.com/spf13/pflag v1.0.10
 	github.com/stretchr/testify v1.11.1
-	golang.org/x/crypto v0.44.0
-	golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546
+	golang.org/x/crypto v0.48.0
+	golang.org/x/exp v0.0.0-20260218203240-3dfff04db8fa
+	golang.org/x/sys v0.41.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 
@@ -31,18 +33,17 @@ require (
 	github.com/dolthub/maphash v0.1.0 // indirect
 	github.com/domodwyer/mailyak/v3 v3.6.2 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
-	github.com/ebitengine/purego v0.9.1 // indirect
 	github.com/fatih/color v1.18.0 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.11 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.13 // indirect
 	github.com/ganigeorgiev/fexpr v0.5.0 // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
 	github.com/go-ozzo/ozzo-validation/v4 v4.3.0 // indirect
 	github.com/go-sql-driver/mysql v1.9.1 // indirect
-	github.com/godbus/dbus/v5 v5.1.0 // indirect
-	github.com/golang-jwt/jwt/v5 v5.3.0 // indirect
+	github.com/godbus/dbus/v5 v5.2.2 // indirect
+	github.com/golang-jwt/jwt/v5 v5.3.1 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
-	github.com/klauspost/compress v1.18.1 // indirect
-	github.com/lufia/plan9stats v0.0.0-20251013123823-9fd1530e3ec3 // indirect
+	github.com/klauspost/compress v1.18.4 // indirect
+	github.com/lufia/plan9stats v0.0.0-20260216142805-b3301c5f2a88 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/ncruces/go-strftime v1.0.0 // indirect
@@ -53,16 +54,15 @@ require (
 	github.com/tklauser/numcpus v0.11.0 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
 	github.com/yusufpapurcu/wmi v1.2.4 // indirect
-	golang.org/x/image v0.33.0 // indirect
-	golang.org/x/net v0.47.0 // indirect
-	golang.org/x/oauth2 v0.33.0 // indirect
-	golang.org/x/sync v0.18.0 // indirect
-	golang.org/x/sys v0.38.0 // indirect
-	golang.org/x/term v0.37.0 // indirect
-	golang.org/x/text v0.31.0 // indirect
+	golang.org/x/image v0.36.0 // indirect
+	golang.org/x/net v0.50.0 // indirect
+	golang.org/x/oauth2 v0.35.0 // indirect
+	golang.org/x/sync v0.19.0 // indirect
+	golang.org/x/term v0.40.0 // indirect
+	golang.org/x/text v0.34.0 // indirect
 	howett.net/plist v1.0.1 // indirect
-	modernc.org/libc v1.66.10 // indirect
+	modernc.org/libc v1.67.6 // indirect
 	modernc.org/mathutil v1.7.1 // indirect
 	modernc.org/memory v1.11.0 // indirect
-	modernc.org/sqlite v1.40.0 // indirect
+	modernc.org/sqlite v1.45.0 // indirect
 )

go.sum

@@ -9,8 +9,8 @@ github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 h1:DklsrG3d
 github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2/go.mod h1:WaHUgvxTVq04UNunO+XhnAqY/wQc+bxr74GqbsZ/Jqw=
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-github.com/coreos/go-systemd/v22 v22.6.0/go.mod h1:iG+pp635Fo7ZmV/j14KUcmEyWF+0X7Lua8rrTWzYgWU=
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@@ -33,8 +33,8 @@ github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHk
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@@ -51,30 +51,32 @@ github.com/go-sql-driver/mysql v1.9.1 h1:FrjNGn/BsJQjVRuSa8CBrM5BWA9BWoXXat3KrtS
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@@ -83,19 +85,19 @@ github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWE
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@@ -103,12 +105,12 @@ github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qq
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@@ -127,41 +129,41 @@ github.com/yusufpapurcu/wmi v1.2.4/go.mod h1:SBZ9tNy3G9/m5Oi98Zks0QjeHVDvuK0qfxQ
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 golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
-golang.org/x/net v0.47.0 h1:Mx+4dIFzqraBXUugkia1OOvlD6LemFo1ALMHjrXDOhY=
-golang.org/x/net v0.47.0/go.mod h1:/jNxtkgq5yWUGYkaZGqo27cfGZ1c5Nen03aYrrKpVRU=
-golang.org/x/oauth2 v0.33.0 h1:4Q+qn+E5z8gPRJfmRy7C2gGG3T4jIprK6aSYgTXGRpo=
-golang.org/x/oauth2 v0.33.0/go.mod h1:lzm5WQJQwKZ3nwavOZ3IS5Aulzxi68dUSgRHujetwEA=
-golang.org/x/sync v0.18.0 h1:kr88TuHDroi+UVf+0hZnirlk8o8T+4MrK6mr60WkH/I=
-golang.org/x/sync v0.18.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+golang.org/x/net v0.50.0 h1:ucWh9eiCGyDR3vtzso0WMQinm2Dnt8cFMuQa9K33J60=
+golang.org/x/net v0.50.0/go.mod h1:UgoSli3F/pBgdJBHCTc+tp3gmrU4XswgGRgtnwWTfyM=
+golang.org/x/oauth2 v0.35.0 h1:Mv2mzuHuZuY2+bkyWXIHMfhNdJAdwW3FuWeCPYN5GVQ=
+golang.org/x/oauth2 v0.35.0/go.mod h1:lzm5WQJQwKZ3nwavOZ3IS5Aulzxi68dUSgRHujetwEA=
+golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=
+golang.org/x/sync v0.19.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201204225414-ed752295db88/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.38.0 h1:3yZWxaJjBmCWXqhN1qh02AkOnCQ1poK6oF+a7xWL6Gc=
-golang.org/x/sys v0.38.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
-golang.org/x/term v0.37.0 h1:8EGAD0qCmHYZg6J17DvsMy9/wJ7/D/4pV/wfnld5lTU=
-golang.org/x/term v0.37.0/go.mod h1:5pB4lxRNYYVZuTLmy8oR2BH8dflOR+IbTYFD8fi3254=
+golang.org/x/sys v0.41.0 h1:Ivj+2Cp/ylzLiEU89QhWblYnOE9zerudt9Ftecq2C6k=
+golang.org/x/sys v0.41.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/term v0.40.0 h1:36e4zGLqU4yhjlmxEaagx2KuYbJq3EwY8K943ZsHcvg=
+golang.org/x/term v0.40.0/go.mod h1:w2P8uVp06p2iyKKuvXIm7N/y0UCRt3UfJTfZ7oOpglM=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
-golang.org/x/text v0.31.0 h1:aC8ghyu4JhP8VojJ2lEHBnochRno1sgL6nEi9WGFGMM=
-golang.org/x/text v0.31.0/go.mod h1:tKRAlv61yKIjGGHX/4tP1LTbc13YSec1pxVEWXzfoeM=
+golang.org/x/text v0.34.0 h1:oL/Qq0Kdaqxa1KbNeMKwQq0reLCCaFtqu2eNuSeNHbk=
+golang.org/x/text v0.34.0/go.mod h1:homfLqTYRFyVYemLBFl5GgL/DWEiH5wcsQ5gSh1yziA=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.38.0 h1:Hx2Xv8hISq8Lm16jvBZ2VQf+RLmbd7wVUsALibYI/IQ=
-golang.org/x/tools v0.38.0/go.mod h1:yEsQ/d/YK8cjh0L6rZlY8tgtlKiBNTL14pGDJPJpYQs=
+golang.org/x/tools v0.42.0 h1:uNgphsn75Tdz5Ji2q36v/nsFSfR/9BRFvqhGBaJGd5k=
+golang.org/x/tools v0.42.0/go.mod h1:Ma6lCIwGZvHK6XtgbswSoWroEkhugApmsXyrUmBhfr0=
 google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
-google.golang.org/protobuf v1.36.10 h1:AYd7cD/uASjIL6Q9LiTjz8JLcrh/88q5UObnmY3aOOE=
-google.golang.org/protobuf v1.36.10/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
+google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
+google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
@@ -171,18 +173,20 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 howett.net/plist v1.0.1 h1:37GdZ8tP09Q35o9ych3ehygcsL+HqKSwzctveSlarvM=
 howett.net/plist v1.0.1/go.mod h1:lqaXoTrLY4hg8tnEzNru53gicrbv7rrk+2xJA/7hw9g=
-modernc.org/cc/v4 v4.26.5 h1:xM3bX7Mve6G8K8b+T11ReenJOT+BmVqQj0FY5T4+5Y4=
-modernc.org/cc/v4 v4.26.5/go.mod h1:uVtb5OGqUKpoLWhqwNQo/8LwvoiEBLvZXIQ/SmO6mL0=
-modernc.org/ccgo/v4 v4.28.1 h1:wPKYn5EC/mYTqBO373jKjvX2n+3+aK7+sICCv4Fjy1A=
-modernc.org/ccgo/v4 v4.28.1/go.mod h1:uD+4RnfrVgE6ec9NGguUNdhqzNIeeomeXf6CL0GTE5Q=
+modernc.org/cc/v4 v4.27.1 h1:9W30zRlYrefrDV2JE2O8VDtJ1yPGownxciz5rrbQZis=
+modernc.org/cc/v4 v4.27.1/go.mod h1:uVtb5OGqUKpoLWhqwNQo/8LwvoiEBLvZXIQ/SmO6mL0=
+modernc.org/ccgo/v4 v4.30.1 h1:4r4U1J6Fhj98NKfSjnPUN7Ze2c6MnAdL0hWw6+LrJpc=
+modernc.org/ccgo/v4 v4.30.1/go.mod h1:bIOeI1JL54Utlxn+LwrFyjCx2n2RDiYEaJVSrgdrRfM=
 modernc.org/fileutil v1.3.40 h1:ZGMswMNc9JOCrcrakF1HrvmergNLAmxOPjizirpfqBA=
 modernc.org/fileutil v1.3.40/go.mod h1:HxmghZSZVAz/LXcMNwZPA/DRrQZEVP9VX0V4LQGQFOc=
 modernc.org/gc/v2 v2.6.5 h1:nyqdV8q46KvTpZlsw66kWqwXRHdjIlJOhG6kxiV/9xI=
 modernc.org/gc/v2 v2.6.5/go.mod h1:YgIahr1ypgfe7chRuJi2gD7DBQiKSLMPgBQe9oIiito=
+modernc.org/gc/v3 v3.1.1 h1:k8T3gkXWY9sEiytKhcgyiZ2L0DTyCQ/nvX+LoCljoRE=
+modernc.org/gc/v3 v3.1.1/go.mod h1:HFK/6AGESC7Ex+EZJhJ2Gni6cTaYpSMmU/cT9RmlfYY=
 modernc.org/goabi0 v0.2.0 h1:HvEowk7LxcPd0eq6mVOAEMai46V+i7Jrj13t4AzuNks=
 modernc.org/goabi0 v0.2.0/go.mod h1:CEFRnnJhKvWT1c1JTI3Avm+tgOWbkOu5oPA8eH8LnMI=
-modernc.org/libc v1.66.10 h1:yZkb3YeLx4oynyR+iUsXsybsX4Ubx7MQlSYEw4yj59A=
-modernc.org/libc v1.66.10/go.mod h1:8vGSEwvoUoltr4dlywvHqjtAqHBaw0j1jI7iFBTAr2I=
+modernc.org/libc v1.67.6 h1:eVOQvpModVLKOdT+LvBPjdQqfrZq+pC39BygcT+E7OI=
+modernc.org/libc v1.67.6/go.mod h1:JAhxUVlolfYDErnwiqaLvUqc8nfb2r6S6slAgZOnaiE=
 modernc.org/mathutil v1.7.1 h1:GCZVGXdaN8gTqB1Mf/usp1Y/hSqgI2vAGGP4jZMCxOU=
 modernc.org/mathutil v1.7.1/go.mod h1:4p5IwJITfppl0G4sUEDtCr4DthTaT47/N3aT6MhfgJg=
 modernc.org/memory v1.11.0 h1:o4QC8aMQzmcwCK3t3Ux/ZHmwFPzE6hf2Y5LbkRs+hbI=
@@ -191,8 +195,8 @@ modernc.org/opt v0.1.4 h1:2kNGMRiUjrp4LcaPuLY2PzUfqM/w9N23quVwhKt5Qm8=
 modernc.org/opt v0.1.4/go.mod h1:03fq9lsNfvkYSfxrfUhZCWPk1lm4cq4N+Bh//bEtgns=
 modernc.org/sortutil v1.2.1 h1:+xyoGf15mM3NMlPDnFqrteY07klSFxLElE2PVuWIJ7w=
 modernc.org/sortutil v1.2.1/go.mod h1:7ZI3a3REbai7gzCLcotuw9AC4VZVpYMjDzETGsSMqJE=
-modernc.org/sqlite v1.40.0 h1:bNWEDlYhNPAUdUdBzjAvn8icAs/2gaKlj4vM+tQ6KdQ=
-modernc.org/sqlite v1.40.0/go.mod h1:9fjQZ0mB1LLP0GYrp39oOJXx/I2sxEnZtzCmEQIKvGE=
+modernc.org/sqlite v1.45.0 h1:r51cSGzKpbptxnby+EIIz5fop4VuE4qFoVEjNvWoObs=
+modernc.org/sqlite v1.45.0/go.mod h1:CzbrU2lSB1DKUusvwGz7rqEKIq+NUd8GWuBBZDs9/nA=
 modernc.org/strutil v1.2.1 h1:UneZBkQA+DX2Rp35KcM69cSsNES9ly8mQWD71HKlOA0=
 modernc.org/strutil v1.2.1/go.mod h1:EHkiggD70koQxjVdSBM3JKM7k6L0FbGE5eymy9i3B9A=
 modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=

internal/alerts/alerts.go

@@ -28,6 +28,7 @@ type AlertManager struct {
 
 type AlertMessageData struct {
 	UserID   string
+	SystemID string
 	Title    string
 	Message  string
 	Link     string
@@ -48,6 +49,7 @@ type SystemAlertStats struct {
 	GPU          map[string]SystemAlertGPUData `json:"g"`
 	Temperatures map[string]float32            `json:"t"`
 	LoadAvg      [3]float64                    `json:"la"`
+	Battery      [2]uint8                      `json:"bat"`
 }
 
 type SystemAlertGPUData struct {
@@ -77,7 +79,6 @@ var supportsTitle = map[string]struct{}{
 	"ifttt":      {},
 	"join":       {},
 	"lark":       {},
-	"matrix":     {},
 	"ntfy":       {},
 	"opsgenie":   {},
 	"pushbullet": {},
@@ -104,10 +105,84 @@ func NewAlertManager(app hubLike) *AlertManager {
 func (am *AlertManager) bindEvents() {
 	am.hub.OnRecordAfterUpdateSuccess("alerts").BindFunc(updateHistoryOnAlertUpdate)
 	am.hub.OnRecordAfterDeleteSuccess("alerts").BindFunc(resolveHistoryOnAlertDelete)
+	am.hub.OnRecordAfterUpdateSuccess("smart_devices").BindFunc(am.handleSmartDeviceAlert)
+}
+
+// IsNotificationSilenced checks if a notification should be silenced based on configured quiet hours
+func (am *AlertManager) IsNotificationSilenced(userID, systemID string) bool {
+	// Query for quiet hours windows that match this user and system
+	// Include both global windows (system is null/empty) and system-specific windows
+	var filter string
+	var params dbx.Params
+
+	if systemID == "" {
+		// If no systemID provided, only check global windows
+		filter = "user={:user} AND system=''"
+		params = dbx.Params{"user": userID}
+	} else {
+		// Check both global and system-specific windows
+		filter = "user={:user} AND (system='' OR system={:system})"
+		params = dbx.Params{
+			"user":   userID,
+			"system": systemID,
+		}
+	}
+
+	quietHourWindows, err := am.hub.FindAllRecords("quiet_hours", dbx.NewExp(filter, params))
+	if err != nil || len(quietHourWindows) == 0 {
+		return false
+	}
+
+	now := time.Now().UTC()
+
+	for _, window := range quietHourWindows {
+		windowType := window.GetString("type")
+		start := window.GetDateTime("start").Time()
+		end := window.GetDateTime("end").Time()
+
+		if windowType == "daily" {
+			// For daily recurring windows, extract just the time portion and compare
+			// The start/end are stored as full datetime but we only care about HH:MM
+			startHour, startMin, _ := start.Clock()
+			endHour, endMin, _ := end.Clock()
+			nowHour, nowMin, _ := now.Clock()
+
+			// Convert to minutes since midnight for easier comparison
+			startMinutes := startHour*60 + startMin
+			endMinutes := endHour*60 + endMin
+			nowMinutes := nowHour*60 + nowMin
+
+			// Handle case where window crosses midnight
+			if endMinutes < startMinutes {
+				// Window crosses midnight (e.g., 23:00 - 01:00)
+				if nowMinutes >= startMinutes || nowMinutes < endMinutes {
+					return true
+				}
+			} else {
+				// Normal case (e.g., 09:00 - 17:00)
+				if nowMinutes >= startMinutes && nowMinutes < endMinutes {
+					return true
+				}
+			}
+		} else {
+			// One-time window: check if current time is within the date range
+			if (now.After(start) || now.Equal(start)) && now.Before(end) {
+				return true
+			}
+		}
+	}
+
+	return false
 }
 
 // SendAlert sends an alert to the user
 func (am *AlertManager) SendAlert(data AlertMessageData) error {
+	// Check if alert is silenced
+	if am.IsNotificationSilenced(data.UserID, data.SystemID) {
+		am.hub.Logger().Info("Notification silenced", "user", data.UserID, "system", data.SystemID, "title", data.Title)
+		return nil
+	}
+
 	// get user settings
 	record, err := am.hub.FindFirstRecordByFilter(
 		"user_settings", "user={:user}",

internal/alerts/alerts_battery_test.go

@@ -0,0 +1,386 @@
+//go:build testing
+
+package alerts_test
+
+import (
+	"encoding/json"
+	"testing"
+	"time"
+
+	"github.com/henrygd/beszel/internal/entities/system"
+	beszelTests "github.com/henrygd/beszel/internal/tests"
+
+	"github.com/pocketbase/dbx"
+	"github.com/pocketbase/pocketbase/tools/types"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+// TestBatteryAlertLogic tests that battery alerts trigger when value drops BELOW threshold
+// (opposite of other alerts like CPU, Memory, etc. which trigger when exceeding threshold)
+func TestBatteryAlertLogic(t *testing.T) {
+	hub, user := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	// Create a system
+	systems, err := beszelTests.CreateSystems(hub, 1, user.Id, "up")
+	require.NoError(t, err)
+	systemRecord := systems[0]
+
+	// Create a battery alert with threshold of 20% and min of 1 minute (immediate trigger)
+	batteryAlert, err := beszelTests.CreateRecord(hub, "alerts", map[string]any{
+		"name":   "Battery",
+		"system": systemRecord.Id,
+		"user":   user.Id,
+		"value":  20, // threshold: 20%
+		"min":    1,  // 1 minute (immediate trigger for testing)
+	})
+	require.NoError(t, err)
+
+	// Verify alert is not triggered initially
+	assert.False(t, batteryAlert.GetBool("triggered"), "Alert should not be triggered initially")
+
+	// Create system stats with battery at 50% (above threshold - should NOT trigger)
+	statsHigh := system.Stats{
+		Cpu:     10,
+		MemPct:  30,
+		DiskPct: 40,
+		Battery: [2]uint8{50, 1}, // 50% battery, discharging
+	}
+	statsHighJSON, _ := json.Marshal(statsHigh)
+	_, err = beszelTests.CreateRecord(hub, "system_stats", map[string]any{
+		"system": systemRecord.Id,
+		"type":   "1m",
+		"stats":  string(statsHighJSON),
+	})
+	require.NoError(t, err)
+
+	// Create CombinedData for the alert handler
+	combinedDataHigh := &system.CombinedData{
+		Stats: statsHigh,
+		Info: system.Info{
+			AgentVersion: "0.12.0",
+			Cpu:          10,
+			MemPct:       30,
+			DiskPct:      40,
+		},
+	}
+
+	// Simulate system update time
+	systemRecord.Set("updated", time.Now().UTC())
+	err = hub.SaveNoValidate(systemRecord)
+	require.NoError(t, err)
+
+	// Handle system alerts with high battery
+	am := hub.GetAlertManager()
+	err = am.HandleSystemAlerts(systemRecord, combinedDataHigh)
+	require.NoError(t, err)
+
+	// Verify alert is still NOT triggered (battery 50% is above threshold 20%)
+	batteryAlert, err = hub.FindFirstRecordByFilter("alerts", "id={:id}", dbx.Params{"id": batteryAlert.Id})
+	require.NoError(t, err)
+	assert.False(t, batteryAlert.GetBool("triggered"), "Alert should NOT be triggered when battery (50%%) is above threshold (20%%)")
+
+	// Now create stats with battery at 15% (below threshold - should trigger)
+	statsLow := system.Stats{
+		Cpu:     10,
+		MemPct:  30,
+		DiskPct: 40,
+		Battery: [2]uint8{15, 1}, // 15% battery, discharging
+	}
+	statsLowJSON, _ := json.Marshal(statsLow)
+	_, err = beszelTests.CreateRecord(hub, "system_stats", map[string]any{
+		"system": systemRecord.Id,
+		"type":   "1m",
+		"stats":  string(statsLowJSON),
+	})
+	require.NoError(t, err)
+
+	combinedDataLow := &system.CombinedData{
+		Stats: statsLow,
+		Info: system.Info{
+			AgentVersion: "0.12.0",
+			Cpu:          10,
+			MemPct:       30,
+			DiskPct:      40,
+		},
+	}
+
+	// Update system timestamp
+	systemRecord.Set("updated", time.Now().UTC())
+	err = hub.SaveNoValidate(systemRecord)
+	require.NoError(t, err)
+
+	// Handle system alerts with low battery
+	err = am.HandleSystemAlerts(systemRecord, combinedDataLow)
+	require.NoError(t, err)
+
+	// Wait for the alert to be processed
+	time.Sleep(20 * time.Millisecond)
+
+	// Verify alert IS triggered (battery 15% is below threshold 20%)
+	batteryAlert, err = hub.FindFirstRecordByFilter("alerts", "id={:id}", dbx.Params{"id": batteryAlert.Id})
+	require.NoError(t, err)
+	assert.True(t, batteryAlert.GetBool("triggered"), "Alert SHOULD be triggered when battery (15%%) drops below threshold (20%%)")
+
+	// Now test resolution: battery goes back above threshold
+	statsRecovered := system.Stats{
+		Cpu:     10,
+		MemPct:  30,
+		DiskPct: 40,
+		Battery: [2]uint8{25, 1}, // 25% battery, discharging
+	}
+	statsRecoveredJSON, _ := json.Marshal(statsRecovered)
+	_, err = beszelTests.CreateRecord(hub, "system_stats", map[string]any{
+		"system": systemRecord.Id,
+		"type":   "1m",
+		"stats":  string(statsRecoveredJSON),
+	})
+	require.NoError(t, err)
+
+	combinedDataRecovered := &system.CombinedData{
+		Stats: statsRecovered,
+		Info: system.Info{
+			AgentVersion: "0.12.0",
+			Cpu:          10,
+			MemPct:       30,
+			DiskPct:      40,
+		},
+	}
+
+	// Update system timestamp
+	systemRecord.Set("updated", time.Now().UTC())
+	err = hub.SaveNoValidate(systemRecord)
+	require.NoError(t, err)
+
+	// Handle system alerts with recovered battery
+	err = am.HandleSystemAlerts(systemRecord, combinedDataRecovered)
+	require.NoError(t, err)
+
+	// Wait for the alert to be processed
+	time.Sleep(20 * time.Millisecond)
+
+	// Verify alert is now resolved (battery 25% is above threshold 20%)
+	batteryAlert, err = hub.FindFirstRecordByFilter("alerts", "id={:id}", dbx.Params{"id": batteryAlert.Id})
+	require.NoError(t, err)
+	assert.False(t, batteryAlert.GetBool("triggered"), "Alert should be resolved when battery (25%%) goes above threshold (20%%)")
+}
+
+// TestBatteryAlertNoBattery verifies that systems without battery data don't trigger alerts
+func TestBatteryAlertNoBattery(t *testing.T) {
+	hub, user := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	// Create a system
+	systems, err := beszelTests.CreateSystems(hub, 1, user.Id, "up")
+	require.NoError(t, err)
+	systemRecord := systems[0]
+
+	// Create a battery alert
+	batteryAlert, err := beszelTests.CreateRecord(hub, "alerts", map[string]any{
+		"name":   "Battery",
+		"system": systemRecord.Id,
+		"user":   user.Id,
+		"value":  20,
+		"min":    1,
+	})
+	require.NoError(t, err)
+
+	// Create stats with NO battery data (Battery[0] = 0)
+	statsNoBattery := system.Stats{
+		Cpu:     10,
+		MemPct:  30,
+		DiskPct: 40,
+		Battery: [2]uint8{0, 0}, // No battery
+	}
+
+	combinedData := &system.CombinedData{
+		Stats: statsNoBattery,
+		Info: system.Info{
+			AgentVersion: "0.12.0",
+			Cpu:          10,
+			MemPct:       30,
+			DiskPct:      40,
+		},
+	}
+
+	// Simulate system update time
+	systemRecord.Set("updated", time.Now().UTC())
+	err = hub.SaveNoValidate(systemRecord)
+	require.NoError(t, err)
+
+	// Handle system alerts
+	am := hub.GetAlertManager()
+	err = am.HandleSystemAlerts(systemRecord, combinedData)
+	require.NoError(t, err)
+
+	// Wait a moment for processing
+	time.Sleep(20 * time.Millisecond)
+
+	// Verify alert is NOT triggered (no battery data should skip the alert)
+	batteryAlert, err = hub.FindFirstRecordByFilter("alerts", "id={:id}", dbx.Params{"id": batteryAlert.Id})
+	require.NoError(t, err)
+	assert.False(t, batteryAlert.GetBool("triggered"), "Alert should NOT be triggered when system has no battery")
+}
+
+// TestBatteryAlertAveragedSamples tests battery alerts with min > 1 (averaging multiple samples)
+// This ensures the inverted threshold logic works correctly across averaged time windows
+func TestBatteryAlertAveragedSamples(t *testing.T) {
+	hub, user := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	// Create a system
+	systems, err := beszelTests.CreateSystems(hub, 1, user.Id, "up")
+	require.NoError(t, err)
+	systemRecord := systems[0]
+
+	// Create a battery alert with threshold of 25% and min of 2 minutes (requires averaging)
+	batteryAlert, err := beszelTests.CreateRecord(hub, "alerts", map[string]any{
+		"name":   "Battery",
+		"system": systemRecord.Id,
+		"user":   user.Id,
+		"value":  25, // threshold: 25%
+		"min":    2,  // 2 minutes - requires averaging
+	})
+	require.NoError(t, err)
+
+	// Verify alert is not triggered initially
+	assert.False(t, batteryAlert.GetBool("triggered"), "Alert should not be triggered initially")
+
+	am := hub.GetAlertManager()
+	now := time.Now().UTC()
+
+	// Create system_stats records with low battery (below threshold)
+	// The alert has min=2 minutes, so alert.time = now - 2 minutes
+	// For the alert to be valid, alert.time must be AFTER the oldest record's created time
+	// So we need records older than (now - 2 min), plus records within the window
+	// Records at: now-3min (oldest, before window), now-90s, now-60s, now-30s
+	recordTimes := []time.Duration{
+		-180 * time.Second, // 3 min ago - this makes the oldest record before alert.time
+		-90 * time.Second,
+		-60 * time.Second,
+		-30 * time.Second,
+	}
+
+	for _, offset := range recordTimes {
+		statsLow := system.Stats{
+			Cpu:     10,
+			MemPct:  30,
+			DiskPct: 40,
+			Battery: [2]uint8{15, 1}, // 15% battery (below 25% threshold)
+		}
+		statsLowJSON, _ := json.Marshal(statsLow)
+
+		recordTime := now.Add(offset)
+		record, err := beszelTests.CreateRecord(hub, "system_stats", map[string]any{
+			"system": systemRecord.Id,
+			"type":   "1m",
+			"stats":  string(statsLowJSON),
+		})
+		require.NoError(t, err)
+		// Update created time to simulate historical records - use SetRaw with formatted string
+		record.SetRaw("created", recordTime.Format(types.DefaultDateLayout))
+		err = hub.SaveNoValidate(record)
+		require.NoError(t, err)
+	}
+
+	// Create combined data with low battery
+	combinedDataLow := &system.CombinedData{
+		Stats: system.Stats{
+			Cpu:     10,
+			MemPct:  30,
+			DiskPct: 40,
+			Battery: [2]uint8{15, 1},
+		},
+		Info: system.Info{
+			AgentVersion: "0.12.0",
+			Cpu:          10,
+			MemPct:       30,
+			DiskPct:      40,
+		},
+	}
+
+	// Update system timestamp
+	systemRecord.Set("updated", now)
+	err = hub.SaveNoValidate(systemRecord)
+	require.NoError(t, err)
+
+	// Handle system alerts - should trigger because average battery is below threshold
+	err = am.HandleSystemAlerts(systemRecord, combinedDataLow)
+	require.NoError(t, err)
+
+	// Wait for alert processing
+	time.Sleep(20 * time.Millisecond)
+
+	// Verify alert IS triggered (average battery 15% is below threshold 25%)
+	batteryAlert, err = hub.FindFirstRecordByFilter("alerts", "id={:id}", dbx.Params{"id": batteryAlert.Id})
+	require.NoError(t, err)
+	assert.True(t, batteryAlert.GetBool("triggered"),
+		"Alert SHOULD be triggered when average battery (15%%) is below threshold (25%%) over min period")
+
+	// Now add records with high battery to test resolution
+	// Use a new time window 2 minutes later
+	newNow := now.Add(2 * time.Minute)
+	// Records need to span before the alert time window (newNow - 2 min)
+	recordTimesHigh := []time.Duration{
+		-180 * time.Second, // 3 min before newNow - makes oldest record before alert.time
+		-90 * time.Second,
+		-60 * time.Second,
+		-30 * time.Second,
+	}
+
+	for _, offset := range recordTimesHigh {
+		statsHigh := system.Stats{
+			Cpu:     10,
+			MemPct:  30,
+			DiskPct: 40,
+			Battery: [2]uint8{50, 1}, // 50% battery (above 25% threshold)
+		}
+		statsHighJSON, _ := json.Marshal(statsHigh)
+
+		recordTime := newNow.Add(offset)
+		record, err := beszelTests.CreateRecord(hub, "system_stats", map[string]any{
+			"system": systemRecord.Id,
+			"type":   "1m",
+			"stats":  string(statsHighJSON),
+		})
+		require.NoError(t, err)
+		record.SetRaw("created", recordTime.Format(types.DefaultDateLayout))
+		err = hub.SaveNoValidate(record)
+		require.NoError(t, err)
+	}
+
+	// Create combined data with high battery
+	combinedDataHigh := &system.CombinedData{
+		Stats: system.Stats{
+			Cpu:     10,
+			MemPct:  30,
+			DiskPct: 40,
+			Battery: [2]uint8{50, 1},
+		},
+		Info: system.Info{
+			AgentVersion: "0.12.0",
+			Cpu:          10,
+			MemPct:       30,
+			DiskPct:      40,
+		},
+	}
+
+	// Update system timestamp to the new time window
+	systemRecord.Set("updated", newNow)
+	err = hub.SaveNoValidate(systemRecord)
+	require.NoError(t, err)
+
+	// Handle system alerts - should resolve because average battery is now above threshold
+	err = am.HandleSystemAlerts(systemRecord, combinedDataHigh)
+	require.NoError(t, err)
+
+	// Wait for alert processing
+	time.Sleep(20 * time.Millisecond)
+
+	// Verify alert is resolved (average battery 50% is above threshold 25%)
+	batteryAlert, err = hub.FindFirstRecordByFilter("alerts", "id={:id}", dbx.Params{"id": batteryAlert.Id})
+	require.NoError(t, err)
+	assert.False(t, batteryAlert.GetBool("triggered"),
+		"Alert should be resolved when average battery (50%%) is above threshold (25%%) over min period")
+}

internal/alerts/alerts_quiet_hours_test.go

@@ -0,0 +1,425 @@
+//go:build testing
+
+package alerts_test
+
+import (
+	"testing"
+	"testing/synctest"
+	"time"
+
+	"github.com/henrygd/beszel/internal/alerts"
+	beszelTests "github.com/henrygd/beszel/internal/tests"
+
+	"github.com/pocketbase/dbx"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestAlertSilencedOneTime(t *testing.T) {
+	hub, user := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	// Create a system
+	systems, err := beszelTests.CreateSystems(hub, 1, user.Id, "up")
+	assert.NoError(t, err)
+	system := systems[0]
+
+	// Create an alert
+	alert, err := beszelTests.CreateRecord(hub, "alerts", map[string]any{
+		"name":   "CPU",
+		"system": system.Id,
+		"user":   user.Id,
+		"value":  80,
+		"min":    1,
+	})
+	assert.NoError(t, err)
+
+	// Create a one-time quiet hours window (current time - 1 hour to current time + 1 hour)
+	now := time.Now().UTC()
+	startTime := now.Add(-1 * time.Hour)
+	endTime := now.Add(1 * time.Hour)
+
+	_, err = beszelTests.CreateRecord(hub, "quiet_hours", map[string]any{
+		"user":   user.Id,
+		"system": system.Id,
+		"type":   "one-time",
+		"start":  startTime,
+		"end":    endTime,
+	})
+	assert.NoError(t, err)
+
+	// Get alert manager
+	am := alerts.NewAlertManager(hub)
+	defer am.StopWorker()
+
+	// Test that alert is silenced
+	silenced := am.IsNotificationSilenced(user.Id, system.Id)
+	assert.True(t, silenced, "Alert should be silenced during active one-time window")
+
+	// Create a window that has already ended
+	pastStart := now.Add(-3 * time.Hour)
+	pastEnd := now.Add(-2 * time.Hour)
+
+	_, err = beszelTests.CreateRecord(hub, "quiet_hours", map[string]any{
+		"user":   user.Id,
+		"system": system.Id,
+		"type":   "one-time",
+		"start":  pastStart,
+		"end":    pastEnd,
+	})
+	assert.NoError(t, err)
+
+	// Should still be silenced because of the first window
+	silenced = am.IsNotificationSilenced(user.Id, system.Id)
+	assert.True(t, silenced, "Alert should still be silenced (past window doesn't affect active window)")
+
+	// Clear all windows and create a future window
+	_, err = hub.DB().NewQuery("DELETE FROM quiet_hours").Execute()
+	assert.NoError(t, err)
+
+	futureStart := now.Add(2 * time.Hour)
+	futureEnd := now.Add(3 * time.Hour)
+
+	_, err = beszelTests.CreateRecord(hub, "quiet_hours", map[string]any{
+		"user":   user.Id,
+		"system": system.Id,
+		"type":   "one-time",
+		"start":  futureStart,
+		"end":    futureEnd,
+	})
+	assert.NoError(t, err)
+
+	// Alert should NOT be silenced (window hasn't started yet)
+	silenced = am.IsNotificationSilenced(user.Id, system.Id)
+	assert.False(t, silenced, "Alert should not be silenced (window hasn't started)")
+
+	_ = alert
+}
+
+func TestAlertSilencedDaily(t *testing.T) {
+	hub, user := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	// Create a system
+	systems, err := beszelTests.CreateSystems(hub, 1, user.Id, "up")
+	assert.NoError(t, err)
+	system := systems[0]
+
+	// Get alert manager
+	am := alerts.NewAlertManager(hub)
+	defer am.StopWorker()
+
+	// Get current hour and create a window that includes current time
+	now := time.Now().UTC()
+	currentHour := now.Hour()
+	currentMin := now.Minute()
+
+	// Create a window from 1 hour ago to 1 hour from now
+	startHour := (currentHour - 1 + 24) % 24
+	endHour := (currentHour + 1) % 24
+
+	// Create times with just the hours/minutes we want (date doesn't matter for daily)
+	startTime := time.Date(2000, 1, 1, startHour, currentMin, 0, 0, time.UTC)
+	endTime := time.Date(2000, 1, 1, endHour, currentMin, 0, 0, time.UTC)
+
+	_, err = beszelTests.CreateRecord(hub, "quiet_hours", map[string]any{
+		"user":   user.Id,
+		"system": system.Id,
+		"type":   "daily",
+		"start":  startTime,
+		"end":    endTime,
+	})
+	assert.NoError(t, err)
+
+	// Alert should be silenced (current time is within the daily window)
+	silenced := am.IsNotificationSilenced(user.Id, system.Id)
+	assert.True(t, silenced, "Alert should be silenced during active daily window")
+
+	// Clear windows and create one that doesn't include current time
+	_, err = hub.DB().NewQuery("DELETE FROM quiet_hours").Execute()
+	assert.NoError(t, err)
+
+	// Create a window from 6-12 hours from now
+	futureStartHour := (currentHour + 6) % 24
+	futureEndHour := (currentHour + 12) % 24
+
+	startTime = time.Date(2000, 1, 1, futureStartHour, 0, 0, 0, time.UTC)
+	endTime = time.Date(2000, 1, 1, futureEndHour, 0, 0, 0, time.UTC)
+
+	_, err = beszelTests.CreateRecord(hub, "quiet_hours", map[string]any{
+		"user":   user.Id,
+		"system": system.Id,
+		"type":   "daily",
+		"start":  startTime,
+		"end":    endTime,
+	})
+	assert.NoError(t, err)
+
+	// Alert should NOT be silenced
+	silenced = am.IsNotificationSilenced(user.Id, system.Id)
+	assert.False(t, silenced, "Alert should not be silenced (outside daily window)")
+}
+
+func TestAlertSilencedDailyMidnightCrossing(t *testing.T) {
+	hub, user := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	// Create a system
+	systems, err := beszelTests.CreateSystems(hub, 1, user.Id, "up")
+	assert.NoError(t, err)
+	system := systems[0]
+
+	// Get alert manager
+	am := alerts.NewAlertManager(hub)
+	defer am.StopWorker()
+
+	// Create a window that crosses midnight: 22:00 - 02:00
+	startTime := time.Date(2000, 1, 1, 22, 0, 0, 0, time.UTC)
+	endTime := time.Date(2000, 1, 1, 2, 0, 0, 0, time.UTC)
+
+	_, err = beszelTests.CreateRecord(hub, "quiet_hours", map[string]any{
+		"user":   user.Id,
+		"system": system.Id,
+		"type":   "daily",
+		"start":  startTime,
+		"end":    endTime,
+	})
+	assert.NoError(t, err)
+
+	// Test with a time at 23:00 (should be silenced)
+	// We can't control the actual current time, but we can verify the logic
+	// by checking if the window was created correctly
+	windows, err := hub.FindAllRecords("quiet_hours", dbx.HashExp{
+		"user":   user.Id,
+		"system": system.Id,
+	})
+	assert.NoError(t, err)
+	assert.Len(t, windows, 1, "Should have created 1 window")
+
+	window := windows[0]
+	assert.Equal(t, "daily", window.GetString("type"))
+	assert.Equal(t, 22, window.GetDateTime("start").Time().Hour())
+	assert.Equal(t, 2, window.GetDateTime("end").Time().Hour())
+}
+
+func TestAlertSilencedGlobal(t *testing.T) {
+	hub, user := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	// Create multiple systems
+	systems, err := beszelTests.CreateSystems(hub, 3, user.Id, "up")
+	assert.NoError(t, err)
+
+	// Get alert manager
+	am := alerts.NewAlertManager(hub)
+	defer am.StopWorker()
+
+	// Create a global quiet hours window (no system specified)
+	now := time.Now().UTC()
+	startTime := now.Add(-1 * time.Hour)
+	endTime := now.Add(1 * time.Hour)
+
+	_, err = beszelTests.CreateRecord(hub, "quiet_hours", map[string]any{
+		"user":  user.Id,
+		"type":  "one-time",
+		"start": startTime,
+		"end":   endTime,
+		// system field is empty/null for global windows
+	})
+	assert.NoError(t, err)
+
+	// All systems should be silenced
+	for _, system := range systems {
+		silenced := am.IsNotificationSilenced(user.Id, system.Id)
+		assert.True(t, silenced, "Alert should be silenced for system %s (global window)", system.Id)
+	}
+
+	// Even with a systemID that doesn't exist, should be silenced
+	silenced := am.IsNotificationSilenced(user.Id, "nonexistent-system")
+	assert.True(t, silenced, "Alert should be silenced for any system (global window)")
+}
+
+func TestAlertSilencedSystemSpecific(t *testing.T) {
+	hub, user := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	// Create multiple systems
+	systems, err := beszelTests.CreateSystems(hub, 2, user.Id, "up")
+	assert.NoError(t, err)
+	system1 := systems[0]
+	system2 := systems[1]
+
+	// Get alert manager
+	am := alerts.NewAlertManager(hub)
+	defer am.StopWorker()
+
+	// Create a system-specific quiet hours window for system1 only
+	now := time.Now().UTC()
+	startTime := now.Add(-1 * time.Hour)
+	endTime := now.Add(1 * time.Hour)
+
+	_, err = beszelTests.CreateRecord(hub, "quiet_hours", map[string]any{
+		"user":   user.Id,
+		"system": system1.Id,
+		"type":   "one-time",
+		"start":  startTime,
+		"end":    endTime,
+	})
+	assert.NoError(t, err)
+
+	// System1 should be silenced
+	silenced := am.IsNotificationSilenced(user.Id, system1.Id)
+	assert.True(t, silenced, "Alert should be silenced for system1")
+
+	// System2 should NOT be silenced
+	silenced = am.IsNotificationSilenced(user.Id, system2.Id)
+	assert.False(t, silenced, "Alert should not be silenced for system2")
+}
+
+func TestAlertSilencedMultiUser(t *testing.T) {
+	hub, _ := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	// Create two users
+	user1, err := beszelTests.CreateUser(hub, "user1@example.com", "password")
+	assert.NoError(t, err)
+
+	user2, err := beszelTests.CreateUser(hub, "user2@example.com", "password")
+	assert.NoError(t, err)
+
+	// Create a system accessible to both users
+	system, err := beszelTests.CreateRecord(hub, "systems", map[string]any{
+		"name":  "shared-system",
+		"users": []string{user1.Id, user2.Id},
+		"host":  "127.0.0.1",
+	})
+	assert.NoError(t, err)
+
+	// Get alert manager
+	am := alerts.NewAlertManager(hub)
+	defer am.StopWorker()
+
+	// Create a quiet hours window for user1 only
+	now := time.Now().UTC()
+	startTime := now.Add(-1 * time.Hour)
+	endTime := now.Add(1 * time.Hour)
+
+	_, err = beszelTests.CreateRecord(hub, "quiet_hours", map[string]any{
+		"user":   user1.Id,
+		"system": system.Id,
+		"type":   "one-time",
+		"start":  startTime,
+		"end":    endTime,
+	})
+	assert.NoError(t, err)
+
+	// User1 should be silenced
+	silenced := am.IsNotificationSilenced(user1.Id, system.Id)
+	assert.True(t, silenced, "Alert should be silenced for user1")
+
+	// User2 should NOT be silenced
+	silenced = am.IsNotificationSilenced(user2.Id, system.Id)
+	assert.False(t, silenced, "Alert should not be silenced for user2")
+}
+
+func TestAlertSilencedWithActualAlert(t *testing.T) {
+	synctest.Test(t, func(t *testing.T) {
+		hub, user := beszelTests.GetHubWithUser(t)
+		defer hub.Cleanup()
+
+		// Create a system
+		systems, err := beszelTests.CreateSystems(hub, 1, user.Id, "up")
+		assert.NoError(t, err)
+		system := systems[0]
+
+		// Create a status alert
+		_, err = beszelTests.CreateRecord(hub, "alerts", map[string]any{
+			"name":   "Status",
+			"system": system.Id,
+			"user":   user.Id,
+			"min":    1,
+		})
+		assert.NoError(t, err)
+
+		// Create user settings with email
+		userSettings, err := hub.FindFirstRecordByFilter("user_settings", "user={:user}", dbx.Params{"user": user.Id})
+		if err != nil || userSettings == nil {
+			userSettings, err = beszelTests.CreateRecord(hub, "user_settings", map[string]any{
+				"user": user.Id,
+				"settings": map[string]any{
+					"emails": []string{"test@example.com"},
+				},
+			})
+			assert.NoError(t, err)
+		}
+
+		// Create a quiet hours window
+		now := time.Now().UTC()
+		startTime := now.Add(-1 * time.Hour)
+		endTime := now.Add(1 * time.Hour)
+
+		_, err = beszelTests.CreateRecord(hub, "quiet_hours", map[string]any{
+			"user":   user.Id,
+			"system": system.Id,
+			"type":   "one-time",
+			"start":  startTime,
+			"end":    endTime,
+		})
+		assert.NoError(t, err)
+
+		// Get initial email count
+		initialEmailCount := hub.TestMailer.TotalSend()
+
+		// Trigger an alert by setting system to down
+		system.Set("status", "down")
+		err = hub.SaveNoValidate(system)
+		assert.NoError(t, err)
+
+		// Wait for the alert to be processed (1 minute + buffer)
+		time.Sleep(time.Second * 75)
+		synctest.Wait()
+
+		// Check that no email was sent (because alert is silenced)
+		finalEmailCount := hub.TestMailer.TotalSend()
+		assert.Equal(t, initialEmailCount, finalEmailCount, "No emails should be sent when alert is silenced")
+
+		// Clear quiet hours windows
+		_, err = hub.DB().NewQuery("DELETE FROM quiet_hours").Execute()
+		assert.NoError(t, err)
+
+		// Reset system to up, then down again
+		system.Set("status", "up")
+		err = hub.SaveNoValidate(system)
+		assert.NoError(t, err)
+		time.Sleep(100 * time.Millisecond)
+
+		system.Set("status", "down")
+		err = hub.SaveNoValidate(system)
+		assert.NoError(t, err)
+
+		// Wait for the alert to be processed
+		time.Sleep(time.Second * 75)
+		synctest.Wait()
+
+		// Now an email should be sent
+		newEmailCount := hub.TestMailer.TotalSend()
+		assert.Greater(t, newEmailCount, finalEmailCount, "Email should be sent when not silenced")
+	})
+}
+
+func TestAlertSilencedNoWindows(t *testing.T) {
+	hub, user := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	// Create a system
+	systems, err := beszelTests.CreateSystems(hub, 1, user.Id, "up")
+	assert.NoError(t, err)
+	system := systems[0]
+
+	// Get alert manager
+	am := alerts.NewAlertManager(hub)
+	defer am.StopWorker()
+
+	// Without any quiet hours windows, alert should NOT be silenced
+	silenced := am.IsNotificationSilenced(user.Id, system.Id)
+	assert.False(t, silenced, "Alert should not be silenced when no windows exist")
+}

internal/alerts/alerts_smart.go

@@ -0,0 +1,107 @@
+package alerts
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/pocketbase/pocketbase/core"
+)
+
+// handleSmartDeviceAlert sends alerts when a SMART device state worsens into WARNING/FAILED.
+// This is automatic and does not require user opt-in.
+func (am *AlertManager) handleSmartDeviceAlert(e *core.RecordEvent) error {
+	oldState := e.Record.Original().GetString("state")
+	newState := e.Record.GetString("state")
+
+	if !shouldSendSmartDeviceAlert(oldState, newState) {
+		return e.Next()
+	}
+
+	systemID := e.Record.GetString("system")
+	if systemID == "" {
+		return e.Next()
+	}
+
+	// Fetch the system record to get the name and users
+	systemRecord, err := e.App.FindRecordById("systems", systemID)
+	if err != nil {
+		e.App.Logger().Error("Failed to find system for SMART alert", "err", err, "systemID", systemID)
+		return e.Next()
+	}
+
+	systemName := systemRecord.GetString("name")
+	deviceName := e.Record.GetString("name")
+	model := e.Record.GetString("model")
+	statusLabel := smartStateLabel(newState)
+
+	// Build alert message
+	title := fmt.Sprintf("SMART %s on %s: %s %s", statusLabel, systemName, deviceName, smartStateEmoji(newState))
+	var message string
+	if model != "" {
+		message = fmt.Sprintf("Disk %s (%s) SMART status changed to %s", deviceName, model, newState)
+	} else {
+		message = fmt.Sprintf("Disk %s SMART status changed to %s", deviceName, newState)
+	}
+
+	// Get users associated with the system
+	userIDs := systemRecord.GetStringSlice("users")
+	if len(userIDs) == 0 {
+		return e.Next()
+	}
+
+	// Send alert to each user
+	for _, userID := range userIDs {
+		if err := am.SendAlert(AlertMessageData{
+			UserID:   userID,
+			SystemID: systemID,
+			Title:    title,
+			Message:  message,
+			Link:     am.hub.MakeLink("system", systemID),
+			LinkText: "View " + systemName,
+		}); err != nil {
+			e.App.Logger().Error("Failed to send SMART alert", "err", err, "userID", userID)
+		}
+	}
+
+	return e.Next()
+}
+
+func shouldSendSmartDeviceAlert(oldState, newState string) bool {
+	oldSeverity := smartStateSeverity(oldState)
+	newSeverity := smartStateSeverity(newState)
+
+	// Ignore unknown states and recoveries; only alert on worsening transitions
+	// from known-good/degraded states into WARNING/FAILED.
+	return oldSeverity >= 1 && newSeverity > oldSeverity
+}
+
+func smartStateSeverity(state string) int {
+	switch state {
+	case "PASSED":
+		return 1
+	case "WARNING":
+		return 2
+	case "FAILED":
+		return 3
+	default:
+		return 0
+	}
+}
+
+func smartStateEmoji(state string) string {
+	switch state {
+	case "WARNING":
+		return "\U0001F7E0"
+	default:
+		return "\U0001F534"
+	}
+}
+
+func smartStateLabel(state string) string {
+	switch state {
+	case "FAILED":
+		return "failure"
+	default:
+		return strings.ToLower(state)
+	}
+}

internal/alerts/alerts_smart_test.go

@@ -0,0 +1,264 @@
+//go:build testing
+
+package alerts_test
+
+import (
+	"testing"
+	"time"
+
+	beszelTests "github.com/henrygd/beszel/internal/tests"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestSmartDeviceAlert(t *testing.T) {
+	hub, user := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	// Create a system for the user
+	system, err := beszelTests.CreateRecord(hub, "systems", map[string]any{
+		"name":  "test-system",
+		"users": []string{user.Id},
+		"host":  "127.0.0.1",
+	})
+	assert.NoError(t, err)
+
+	// Create a smart_device with state PASSED
+	smartDevice, err := beszelTests.CreateRecord(hub, "smart_devices", map[string]any{
+		"system": system.Id,
+		"name":   "/dev/sda",
+		"model":  "Samsung SSD 970 EVO",
+		"state":  "PASSED",
+	})
+	assert.NoError(t, err)
+
+	// Verify no emails sent initially
+	assert.Zero(t, hub.TestMailer.TotalSend(), "should have 0 emails sent initially")
+
+	// Re-fetch the record so PocketBase can properly track original values
+	smartDevice, err = hub.FindRecordById("smart_devices", smartDevice.Id)
+	assert.NoError(t, err)
+
+	// Update the smart device state to FAILED
+	smartDevice.Set("state", "FAILED")
+	err = hub.Save(smartDevice)
+	assert.NoError(t, err)
+
+	// Wait for the alert to be processed
+	time.Sleep(50 * time.Millisecond)
+
+	// Verify that an email was sent
+	assert.EqualValues(t, 1, hub.TestMailer.TotalSend(), "should have 1 email sent after state changed to FAILED")
+
+	// Check the email content
+	lastMessage := hub.TestMailer.LastMessage()
+	assert.Contains(t, lastMessage.Subject, "SMART failure on test-system")
+	assert.Contains(t, lastMessage.Subject, "/dev/sda")
+	assert.Contains(t, lastMessage.Text, "Samsung SSD 970 EVO")
+	assert.Contains(t, lastMessage.Text, "FAILED")
+}
+
+func TestSmartDeviceAlertPassedToWarning(t *testing.T) {
+	hub, user := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	system, err := beszelTests.CreateRecord(hub, "systems", map[string]any{
+		"name":  "test-system",
+		"users": []string{user.Id},
+		"host":  "127.0.0.1",
+	})
+	assert.NoError(t, err)
+
+	smartDevice, err := beszelTests.CreateRecord(hub, "smart_devices", map[string]any{
+		"system": system.Id,
+		"name":   "/dev/mmcblk0",
+		"model":  "eMMC",
+		"state":  "PASSED",
+	})
+	assert.NoError(t, err)
+
+	smartDevice, err = hub.FindRecordById("smart_devices", smartDevice.Id)
+	assert.NoError(t, err)
+
+	smartDevice.Set("state", "WARNING")
+	err = hub.Save(smartDevice)
+	assert.NoError(t, err)
+
+	time.Sleep(50 * time.Millisecond)
+
+	assert.EqualValues(t, 1, hub.TestMailer.TotalSend(), "should have 1 email sent after state changed to WARNING")
+	lastMessage := hub.TestMailer.LastMessage()
+	assert.Contains(t, lastMessage.Subject, "SMART warning on test-system")
+	assert.Contains(t, lastMessage.Text, "WARNING")
+}
+
+func TestSmartDeviceAlertWarningToFailed(t *testing.T) {
+	hub, user := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	system, err := beszelTests.CreateRecord(hub, "systems", map[string]any{
+		"name":  "test-system",
+		"users": []string{user.Id},
+		"host":  "127.0.0.1",
+	})
+	assert.NoError(t, err)
+
+	smartDevice, err := beszelTests.CreateRecord(hub, "smart_devices", map[string]any{
+		"system": system.Id,
+		"name":   "/dev/mmcblk0",
+		"model":  "eMMC",
+		"state":  "WARNING",
+	})
+	assert.NoError(t, err)
+
+	smartDevice, err = hub.FindRecordById("smart_devices", smartDevice.Id)
+	assert.NoError(t, err)
+
+	smartDevice.Set("state", "FAILED")
+	err = hub.Save(smartDevice)
+	assert.NoError(t, err)
+
+	time.Sleep(50 * time.Millisecond)
+
+	assert.EqualValues(t, 1, hub.TestMailer.TotalSend(), "should have 1 email sent after state changed from WARNING to FAILED")
+	lastMessage := hub.TestMailer.LastMessage()
+	assert.Contains(t, lastMessage.Subject, "SMART failure on test-system")
+	assert.Contains(t, lastMessage.Text, "FAILED")
+}
+
+func TestSmartDeviceAlertNoAlertOnNonPassedToFailed(t *testing.T) {
+	hub, user := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	// Create a system for the user
+	system, err := beszelTests.CreateRecord(hub, "systems", map[string]any{
+		"name":  "test-system",
+		"users": []string{user.Id},
+		"host":  "127.0.0.1",
+	})
+	assert.NoError(t, err)
+
+	// Create a smart_device with state UNKNOWN
+	smartDevice, err := beszelTests.CreateRecord(hub, "smart_devices", map[string]any{
+		"system": system.Id,
+		"name":   "/dev/sda",
+		"model":  "Samsung SSD 970 EVO",
+		"state":  "UNKNOWN",
+	})
+	assert.NoError(t, err)
+
+	// Re-fetch the record so PocketBase can properly track original values
+	smartDevice, err = hub.FindRecordById("smart_devices", smartDevice.Id)
+	assert.NoError(t, err)
+
+	// Update the state from UNKNOWN to FAILED - should NOT trigger alert.
+	// We only alert from known healthy/degraded states.
+	smartDevice.Set("state", "FAILED")
+	err = hub.Save(smartDevice)
+	assert.NoError(t, err)
+
+	time.Sleep(50 * time.Millisecond)
+
+	// Verify no email was sent (only PASSED -> FAILED triggers alert)
+	assert.Zero(t, hub.TestMailer.TotalSend(), "should have 0 emails when changing from UNKNOWN to FAILED")
+
+	// Re-fetch the record again
+	smartDevice, err = hub.FindRecordById("smart_devices", smartDevice.Id)
+	assert.NoError(t, err)
+
+	// Update state from FAILED to PASSED - should NOT trigger alert
+	smartDevice.Set("state", "PASSED")
+	err = hub.Save(smartDevice)
+	assert.NoError(t, err)
+
+	time.Sleep(50 * time.Millisecond)
+
+	// Verify no email was sent
+	assert.Zero(t, hub.TestMailer.TotalSend(), "should have 0 emails when changing from FAILED to PASSED")
+}
+
+func TestSmartDeviceAlertMultipleUsers(t *testing.T) {
+	hub, user1 := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	// Create a second user
+	user2, err := beszelTests.CreateUser(hub, "test2@example.com", "password")
+	assert.NoError(t, err)
+
+	// Create user settings for the second user
+	_, err = beszelTests.CreateRecord(hub, "user_settings", map[string]any{
+		"user":     user2.Id,
+		"settings": `{"emails":["test2@example.com"],"webhooks":[]}`,
+	})
+	assert.NoError(t, err)
+
+	// Create a system with both users
+	system, err := beszelTests.CreateRecord(hub, "systems", map[string]any{
+		"name":  "shared-system",
+		"users": []string{user1.Id, user2.Id},
+		"host":  "127.0.0.1",
+	})
+	assert.NoError(t, err)
+
+	// Create a smart_device with state PASSED
+	smartDevice, err := beszelTests.CreateRecord(hub, "smart_devices", map[string]any{
+		"system": system.Id,
+		"name":   "/dev/nvme0n1",
+		"model":  "WD Black SN850",
+		"state":  "PASSED",
+	})
+	assert.NoError(t, err)
+
+	// Re-fetch the record so PocketBase can properly track original values
+	smartDevice, err = hub.FindRecordById("smart_devices", smartDevice.Id)
+	assert.NoError(t, err)
+
+	// Update the smart device state to FAILED
+	smartDevice.Set("state", "FAILED")
+	err = hub.Save(smartDevice)
+	assert.NoError(t, err)
+
+	time.Sleep(50 * time.Millisecond)
+
+	// Verify that two emails were sent (one for each user)
+	assert.EqualValues(t, 2, hub.TestMailer.TotalSend(), "should have 2 emails sent for 2 users")
+}
+
+func TestSmartDeviceAlertWithoutModel(t *testing.T) {
+	hub, user := beszelTests.GetHubWithUser(t)
+	defer hub.Cleanup()
+
+	// Create a system for the user
+	system, err := beszelTests.CreateRecord(hub, "systems", map[string]any{
+		"name":  "test-system",
+		"users": []string{user.Id},
+		"host":  "127.0.0.1",
+	})
+	assert.NoError(t, err)
+
+	// Create a smart_device with state PASSED but no model
+	smartDevice, err := beszelTests.CreateRecord(hub, "smart_devices", map[string]any{
+		"system": system.Id,
+		"name":   "/dev/sdb",
+		"state":  "PASSED",
+	})
+	assert.NoError(t, err)
+
+	// Re-fetch the record so PocketBase can properly track original values
+	smartDevice, err = hub.FindRecordById("smart_devices", smartDevice.Id)
+	assert.NoError(t, err)
+
+	// Update the smart device state to FAILED
+	smartDevice.Set("state", "FAILED")
+	err = hub.Save(smartDevice)
+	assert.NoError(t, err)
+
+	time.Sleep(50 * time.Millisecond)
+
+	// Verify that an email was sent
+	assert.EqualValues(t, 1, hub.TestMailer.TotalSend(), "should have 1 email sent")
+
+	// Check that the email doesn't have empty parentheses for missing model
+	lastMessage := hub.TestMailer.LastMessage()
+	assert.NotContains(t, lastMessage.Text, "()", "should not have empty parentheses for missing model")
+	assert.Contains(t, lastMessage.Text, "/dev/sdb")
+}

internal/alerts/alerts_status.go

@@ -166,6 +166,7 @@ func (am *AlertManager) sendStatusAlert(alertStatus string, systemName string, a
 
 	return am.SendAlert(AlertMessageData{
 		UserID:   alertRecord.GetString("user"),
+		SystemID: systemID,
 		Title:    title,
 		Message:  message,
 		Link:     am.hub.MakeLink("system", systemID),

internal/alerts/alerts_system.go

@@ -66,17 +66,30 @@ func (am *AlertManager) HandleSystemAlerts(systemRecord *core.Record, data *syst
 			unit = ""
 		case "GPU":
 			val = data.Info.GpuPct
+		case "Battery":
+			if data.Stats.Battery[0] == 0 {
+				continue
+			}
+			val = float64(data.Stats.Battery[0])
 		}
 
 		triggered := alertRecord.GetBool("triggered")
 		threshold := alertRecord.GetFloat("value")
 
+		// Battery alert has inverted logic: trigger when value is BELOW threshold
+		lowAlert := isLowAlert(name)
+
 		// CONTINUE
-		// IF alert is not triggered and curValue is less than threshold
-		// OR alert is triggered and curValue is greater than threshold
-		if (!triggered && val <= threshold) || (triggered && val > threshold) {
-			// log.Printf("Skipping alert %s: val %f | threshold %f | triggered %v\n", name, val, threshold, triggered)
-			continue
+		// For normal alerts: IF not triggered and curValue <= threshold, OR triggered and curValue > threshold
+		// For low alerts (Battery): IF not triggered and curValue >= threshold, OR triggered and curValue < threshold
+		if lowAlert {
+			if (!triggered && val >= threshold) || (triggered && val < threshold) {
+				continue
+			}
+		} else {
+			if (!triggered && val <= threshold) || (triggered && val > threshold) {
+				continue
+			}
 		}
 
 		min := max(1, cast.ToUint8(alertRecord.Get("min")))
@@ -94,7 +107,11 @@ func (am *AlertManager) HandleSystemAlerts(systemRecord *core.Record, data *syst
 
 		// send alert immediately if min is 1 - no need to sum up values.
 		if min == 1 {
-			alert.triggered = val > threshold
+			if lowAlert {
+				alert.triggered = val < threshold
+			} else {
+				alert.triggered = val > threshold
+			}
 			go am.sendSystemAlert(alert)
 			continue
 		}
@@ -219,6 +236,8 @@ func (am *AlertManager) HandleSystemAlerts(systemRecord *core.Record, data *syst
 					}
 				}
 				alert.val += maxUsage
+			case "Battery":
+				alert.val += float64(stats.Battery[0])
 			default:
 				continue
 			}
@@ -256,12 +275,24 @@ func (am *AlertManager) HandleSystemAlerts(systemRecord *core.Record, data *syst
 		// log.Printf("%s: val %f | count %d | min-count %f | threshold %f\n", alert.name, alert.val, alert.count, minCount, alert.threshold)
 		// pass through alert if count is greater than or equal to minCount
 		if float32(alert.count) >= minCount {
-			if !alert.triggered && alert.val > alert.threshold {
-				alert.triggered = true
-				go am.sendSystemAlert(alert)
-			} else if alert.triggered && alert.val <= alert.threshold {
-				alert.triggered = false
-				go am.sendSystemAlert(alert)
+			// Battery alert has inverted logic: trigger when value is BELOW threshold
+			lowAlert := isLowAlert(alert.name)
+			if lowAlert {
+				if !alert.triggered && alert.val < alert.threshold {
+					alert.triggered = true
+					go am.sendSystemAlert(alert)
+				} else if alert.triggered && alert.val >= alert.threshold {
+					alert.triggered = false
+					go am.sendSystemAlert(alert)
+				}
+			} else {
+				if !alert.triggered && alert.val > alert.threshold {
+					alert.triggered = true
+					go am.sendSystemAlert(alert)
+				} else if alert.triggered && alert.val <= alert.threshold {
+					alert.triggered = false
+					go am.sendSystemAlert(alert)
+				}
 			}
 		}
 	}
@@ -288,10 +319,19 @@ func (am *AlertManager) sendSystemAlert(alert SystemAlertData) {
 	}
 
 	var subject string
+	lowAlert := isLowAlert(alert.name)
 	if alert.triggered {
-		subject = fmt.Sprintf("%s %s above threshold", systemName, titleAlertName)
+		if lowAlert {
+			subject = fmt.Sprintf("%s %s below threshold", systemName, titleAlertName)
+		} else {
+			subject = fmt.Sprintf("%s %s above threshold", systemName, titleAlertName)
+		}
 	} else {
-		subject = fmt.Sprintf("%s %s below threshold", systemName, titleAlertName)
+		if lowAlert {
+			subject = fmt.Sprintf("%s %s above threshold", systemName, titleAlertName)
+		} else {
+			subject = fmt.Sprintf("%s %s below threshold", systemName, titleAlertName)
+		}
 	}
 	minutesLabel := "minute"
 	if alert.min > 1 {
@@ -309,9 +349,14 @@ func (am *AlertManager) sendSystemAlert(alert SystemAlertData) {
 	}
 	am.SendAlert(AlertMessageData{
 		UserID:   alert.alertRecord.GetString("user"),
+		SystemID: alert.systemRecord.Id,
 		Title:    subject,
 		Message:  body,
 		Link:     am.hub.MakeLink("system", alert.systemRecord.Id),
 		LinkText: "View " + systemName,
 	})
 }
+
+func isLowAlert(name string) bool {
+	return name == "Battery"
+}

internal/alerts/alerts_test.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package alerts_test
 

internal/alerts/alerts_test_helpers.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package alerts
 

internal/cmd/agent/agent.go

@@ -17,9 +17,8 @@ import (
 type cmdOptions struct {
 	key    string // key is the public key(s) for SSH authentication.
 	listen string // listen is the address or port to listen on.
-	// TODO: add hubURL and token
-	// hubURL string // hubURL is the URL of the hub to use.
-	// token  string // token is the token to use for authentication.
+	hubURL string // hubURL is the URL of the Beszel hub.
+	token  string // token is the token to use for authentication.
 }
 
 // parse parses the command line flags and populates the config struct.
@@ -32,9 +31,6 @@ func (opts *cmdOptions) parse() bool {
 
 	// Subcommands that don't require any pflag parsing
 	switch subcommand {
-	case "-v", "version":
-		fmt.Println(beszel.AppName+"-agent", beszel.Version)
-		return true
 	case "health":
 		err := health.Check()
 		if err != nil {
@@ -42,18 +38,22 @@ func (opts *cmdOptions) parse() bool {
 		}
 		fmt.Print("ok")
 		return true
+	case "fingerprint":
+		handleFingerprint()
+		return true
 	}
 
 	// pflag.CommandLine.ParseErrorsWhitelist.UnknownFlags = true
 	pflag.StringVarP(&opts.key, "key", "k", "", "Public key(s) for SSH authentication")
 	pflag.StringVarP(&opts.listen, "listen", "l", "", "Address or port to listen on")
-	// pflag.StringVarP(&opts.hubURL, "hub-url", "u", "", "URL of the hub to use")
-	// pflag.StringVarP(&opts.token, "token", "t", "", "Token to use for authentication")
+	pflag.StringVarP(&opts.hubURL, "url", "u", "", "URL of the Beszel hub")
+	pflag.StringVarP(&opts.token, "token", "t", "", "Token to use for authentication")
 	chinaMirrors := pflag.BoolP("china-mirrors", "c", false, "Use mirror for update (gh.beszel.dev) instead of GitHub")
+	version := pflag.BoolP("version", "v", false, "Show version information")
 	help := pflag.BoolP("help", "h", false, "Show this help message")
 
 	// Convert old single-dash long flags to double-dash for backward compatibility
-	flagsToConvert := []string{"key", "listen"}
+	flagsToConvert := []string{"key", "listen", "url", "token"}
 	for i, arg := range os.Args {
 		for _, flag := range flagsToConvert {
 			singleDash := "-" + flag
@@ -74,9 +74,9 @@ func (opts *cmdOptions) parse() bool {
 		builder.WriteString(os.Args[0])
 		builder.WriteString(" [command] [flags]\n")
 		builder.WriteString("\nCommands:\n")
-		builder.WriteString("  health    Check if the agent is running\n")
-		// builder.WriteString("  help      Display this help message\n")
-		builder.WriteString("  update    Update to the latest version\n")
+		builder.WriteString("  fingerprint  View or reset the agent fingerprint\n")
+		builder.WriteString("  health       Check if the agent is running\n")
+		builder.WriteString("  update       Update to the latest version\n")
 		builder.WriteString("\nFlags:\n")
 		fmt.Print(builder.String())
 		pflag.PrintDefaults()
@@ -87,6 +87,9 @@ func (opts *cmdOptions) parse() bool {
 
 	// Must run after pflag.Parse()
 	switch {
+	case *version:
+		fmt.Println(beszel.AppName+"-agent", beszel.Version)
+		return true
 	case *help || subcommand == "help":
 		pflag.Usage()
 		return true
@@ -95,6 +98,13 @@ func (opts *cmdOptions) parse() bool {
 		return true
 	}
 
+	// Set environment variables from CLI flags (if provided)
+	if opts.hubURL != "" {
+		os.Setenv("HUB_URL", opts.hubURL)
+	}
+	if opts.token != "" {
+		os.Setenv("TOKEN", opts.token)
+	}
 	return false
 }
 
@@ -127,6 +137,38 @@ func (opts *cmdOptions) getAddress() string {
 	return agent.GetAddress(opts.listen)
 }
 
+// handleFingerprint handles the "fingerprint" command with subcommands "view" and "reset".
+func handleFingerprint() {
+	subCmd := ""
+	if len(os.Args) > 2 {
+		subCmd = os.Args[2]
+	}
+
+	switch subCmd {
+	case "", "view":
+		dataDir, _ := agent.GetDataDir()
+		fp := agent.GetFingerprint(dataDir, "", "")
+		fmt.Println(fp)
+	case "help", "-h", "--help":
+		fmt.Print(fingerprintUsage())
+	case "reset":
+		dataDir, err := agent.GetDataDir()
+		if err != nil {
+			log.Fatal(err)
+		}
+		if err := agent.DeleteFingerprint(dataDir); err != nil {
+			log.Fatal(err)
+		}
+		fmt.Println("Fingerprint reset. A new one will be generated on next start.")
+	default:
+		log.Fatalf("Unknown command: %q\n\n%s", subCmd, fingerprintUsage())
+	}
+}
+
+func fingerprintUsage() string {
+	return fmt.Sprintf("Usage: %s fingerprint [view|reset]\n\nCommands:\n  view   Print fingerprint (default)\n  reset  Reset saved fingerprint\n", os.Args[0])
+}
+
 func main() {
 	var opts cmdOptions
 	subcommandHandled := opts.parse()

internal/common/common-ws.go

@@ -1,6 +1,7 @@
 package common
 
 import (
+	"github.com/fxamacker/cbor/v2"
 	"github.com/henrygd/beszel/internal/entities/smart"
 	"github.com/henrygd/beszel/internal/entities/system"
 	"github.com/henrygd/beszel/internal/entities/systemd"
@@ -34,14 +35,14 @@ type HubRequest[T any] struct {
 // AgentResponse defines the structure for responses sent from agent to hub.
 type AgentResponse struct {
 	Id          *uint32                    `cbor:"0,keyasint,omitempty"`
-	SystemData  *system.CombinedData       `cbor:"1,keyasint,omitempty,omitzero"`
-	Fingerprint *FingerprintResponse       `cbor:"2,keyasint,omitempty,omitzero"`
+	SystemData  *system.CombinedData       `cbor:"1,keyasint,omitempty,omitzero"` // Legacy (<= 0.17)
+	Fingerprint *FingerprintResponse       `cbor:"2,keyasint,omitempty,omitzero"` // Legacy (<= 0.17)
 	Error       string                     `cbor:"3,keyasint,omitempty,omitzero"`
-	String      *string                    `cbor:"4,keyasint,omitempty,omitzero"`
-	SmartData   map[string]smart.SmartData `cbor:"5,keyasint,omitempty,omitzero"`
-	ServiceInfo systemd.ServiceDetails     `cbor:"6,keyasint,omitempty,omitzero"`
-	// Logs        *LogsPayload         `cbor:"4,keyasint,omitempty,omitzero"`
-	// RawBytes    []byte               `cbor:"4,keyasint,omitempty,omitzero"`
+	String      *string                    `cbor:"4,keyasint,omitempty,omitzero"` // Legacy (<= 0.17)
+	SmartData   map[string]smart.SmartData `cbor:"5,keyasint,omitempty,omitzero"` // Legacy (<= 0.17)
+	ServiceInfo systemd.ServiceDetails     `cbor:"6,keyasint,omitempty,omitzero"` // Legacy (<= 0.17)
+	// Data is the generic response payload for new endpoints (0.18+)
+	Data cbor.RawMessage `cbor:"7,keyasint,omitempty,omitzero"`
 }
 
 type FingerprintRequest struct {
@@ -58,8 +59,8 @@ type FingerprintResponse struct {
 }
 
 type DataRequestOptions struct {
-	CacheTimeMs uint16 `cbor:"0,keyasint"`
-	// ResourceType uint8  `cbor:"1,keyasint,omitempty,omitzero"`
+	CacheTimeMs    uint16 `cbor:"0,keyasint"`
+	IncludeDetails bool   `cbor:"1,keyasint"`
 }
 
 type ContainerLogsRequest struct {

internal/dockerfile_agent

@@ -23,6 +23,9 @@ COPY --from=builder /agent /agent
 # this is so we don't need to create the /tmp directory in the scratch container
 COPY --from=builder /tmp /tmp
 
+# AMD GPU name lookup (used by agent on Linux when /usr/share/libdrm/amdgpu.ids is read)
+COPY --from=builder /app/agent/test-data/amdgpu.ids /usr/share/libdrm/amdgpu.ids
+
 # Ensure data persistence across container recreations
 VOLUME ["/var/lib/beszel-agent"]
 

internal/dockerfile_agent_alpine

@@ -17,9 +17,12 @@ RUN rm -rf /tmp/*
 # --------------------------
 # Final image: default scratch-based agent
 # --------------------------
-FROM alpine:latest
+FROM alpine:3.23
 COPY --from=builder /agent /agent
 
+# AMD GPU name lookup (used by agent on Linux when /usr/share/libdrm/amdgpu.ids is read)
+COPY --from=builder /app/agent/test-data/amdgpu.ids /usr/share/libdrm/amdgpu.ids
+
 RUN apk add --no-cache smartmontools
 
 # Ensure data persistence across container recreations

internal/dockerfile_agent_intel

@@ -16,7 +16,7 @@ RUN CGO_ENABLED=0 GOGC=75 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -ldflags "-
 # Final image
 # Note: must cap_add: [CAP_PERFMON] and mount /dev/dri/ as volume
 # --------------------------
-FROM alpine:edge
+FROM alpine:3.23
 
 COPY --from=builder /agent /agent
 

internal/dockerfile_agent_nvidia

@@ -1,4 +1,4 @@
-FROM --platform=$BUILDPLATFORM golang:alpine AS builder
+FROM --platform=$BUILDPLATFORM golang:bookworm AS builder
 
 WORKDIR /app
 
@@ -10,7 +10,7 @@ COPY . ./
 
 # Build
 ARG TARGETOS TARGETARCH
-RUN CGO_ENABLED=0 GOGC=75 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -ldflags "-w -s" -o /agent ./internal/cmd/agent
+RUN CGO_ENABLED=0 GOGC=75 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -tags glibc -ldflags "-w -s" -o /agent ./internal/cmd/agent
 
 # --------------------------
 # Smartmontools builder stage
@@ -37,6 +37,9 @@ RUN apt-get update && apt-get install -y \
 FROM nvidia/cuda:12.2.2-base-ubuntu22.04
 COPY --from=builder /agent /agent
 
+# AMD GPU name lookup (used by agent on hybrid laptops when /usr/share/libdrm/amdgpu.ids is read)
+COPY --from=builder /app/agent/test-data/amdgpu.ids /usr/share/libdrm/amdgpu.ids
+
 # Copy smartmontools binaries and config files
 COPY --from=smartmontools-builder /usr/sbin/smartctl /usr/sbin/smartctl
 

internal/entities/container/container.go

@@ -34,6 +34,14 @@ type ApiStats struct {
 	MemoryStats MemoryStats `json:"memory_stats"`
 }
 
+// Docker system info from /info API endpoint
+type HostInfo struct {
+	OperatingSystem string `json:"OperatingSystem"`
+	KernelVersion   string `json:"KernelVersion"`
+	NCPU            int    `json:"NCPU"`
+	MemTotal        uint64 `json:"MemTotal"`
+}
+
 func (s *ApiStats) CalculateCpuPercentLinux(prevCpuContainer uint64, prevCpuSystem uint64) float64 {
 	cpuDelta := s.CPUStats.CPUUsage.TotalUsage - prevCpuContainer
 	systemDelta := s.CPUStats.SystemUsage - prevCpuSystem
@@ -121,11 +129,12 @@ var DockerHealthStrings = map[string]DockerHealth{
 
 // Docker container stats
 type Stats struct {
-	Name        string  `json:"n" cbor:"0,keyasint"`
-	Cpu         float64 `json:"c" cbor:"1,keyasint"`
-	Mem         float64 `json:"m" cbor:"2,keyasint"`
-	NetworkSent float64 `json:"ns" cbor:"3,keyasint"`
-	NetworkRecv float64 `json:"nr" cbor:"4,keyasint"`
+	Name        string    `json:"n" cbor:"0,keyasint"`
+	Cpu         float64   `json:"c" cbor:"1,keyasint"`
+	Mem         float64   `json:"m" cbor:"2,keyasint"`
+	NetworkSent float64   `json:"ns,omitzero" cbor:"3,keyasint,omitzero"` // deprecated 0.18.3 (MB) - keep field for old agents/records
+	NetworkRecv float64   `json:"nr,omitzero" cbor:"4,keyasint,omitzero"` // deprecated 0.18.3 (MB) - keep field for old agents/records
+	Bandwidth   [2]uint64 `json:"b,omitzero" cbor:"9,keyasint,omitzero"`  // [sent bytes, recv bytes]
 
 	Health DockerHealth `json:"-" cbor:"5,keyasint"`
 	Status string       `json:"-" cbor:"6,keyasint"`

internal/entities/smart/smart.go

@@ -130,10 +130,23 @@ type SummaryInfo struct {
 }
 
 type AtaSmartAttributes struct {
-	// Revision int                 `json:"revision"`
 	Table []AtaSmartAttribute `json:"table"`
 }
 
+type AtaDeviceStatistics struct {
+	Pages []AtaDeviceStatisticsPage `json:"pages"`
+}
+
+type AtaDeviceStatisticsPage struct {
+	Number uint8                      `json:"number"`
+	Table  []AtaDeviceStatisticsEntry `json:"table"`
+}
+
+type AtaDeviceStatisticsEntry struct {
+	Name  string  `json:"name"`
+	Value *uint64 `json:"value,omitempty"`
+}
+
 type AtaSmartAttribute struct {
 	ID         uint16 `json:"id"`
 	Name       string `json:"name"`
@@ -343,7 +356,8 @@ type SmartInfoForSata struct {
 	SmartStatus SmartStatusInfo `json:"smart_status"`
 	// AtaSmartData                 AtaSmartData                 `json:"ata_smart_data"`
 	// AtaSctCapabilities           AtaSctCapabilities           `json:"ata_sct_capabilities"`
-	AtaSmartAttributes AtaSmartAttributes `json:"ata_smart_attributes"`
+	AtaSmartAttributes  AtaSmartAttributes  `json:"ata_smart_attributes"`
+	AtaDeviceStatistics AtaDeviceStatistics `json:"ata_device_statistics"`
 	// PowerOnTime                  PowerOnTimeInfo              `json:"power_on_time"`
 	// PowerCycleCount              uint16                       `json:"power_cycle_count"`
 	Temperature TemperatureInfo `json:"temperature"`

internal/entities/system/system.go

@@ -27,8 +27,8 @@ type Stats struct {
 	DiskWritePs    float64             `json:"dw" cbor:"13,keyasint"`
 	MaxDiskReadPs  float64             `json:"drm,omitempty" cbor:"14,keyasint,omitempty"`
 	MaxDiskWritePs float64             `json:"dwm,omitempty" cbor:"15,keyasint,omitempty"`
-	NetworkSent    float64             `json:"ns" cbor:"16,keyasint"`
-	NetworkRecv    float64             `json:"nr" cbor:"17,keyasint"`
+	NetworkSent    float64             `json:"ns,omitzero" cbor:"16,keyasint,omitzero"`
+	NetworkRecv    float64             `json:"nr,omitzero" cbor:"17,keyasint,omitzero"`
 	MaxNetworkSent float64             `json:"nsm,omitempty" cbor:"18,keyasint,omitempty"`
 	MaxNetworkRecv float64             `json:"nrm,omitempty" cbor:"19,keyasint,omitempty"`
 	Temperatures   map[string]float64  `json:"t,omitempty" cbor:"20,keyasint,omitempty"`
@@ -123,30 +123,49 @@ const (
 	ConnectionTypeWebSocket
 )
 
+// Core system data that is needed in All Systems table
 type Info struct {
-	Hostname       string  `json:"h" cbor:"0,keyasint"`
-	KernelVersion  string  `json:"k,omitempty" cbor:"1,keyasint,omitempty"`
-	Cores          int     `json:"c" cbor:"2,keyasint"`
+	Hostname      string `json:"h,omitempty" cbor:"0,keyasint,omitempty"` // deprecated - moved to Details struct
+	KernelVersion string `json:"k,omitempty" cbor:"1,keyasint,omitempty"` // deprecated - moved to Details struct
+	Cores         int    `json:"c,omitzero" cbor:"2,keyasint,omitzero"`   // deprecated - moved to Details struct
+	// Threads is needed in Info struct to calculate load average thresholds
 	Threads        int     `json:"t,omitempty" cbor:"3,keyasint,omitempty"`
-	CpuModel       string  `json:"m" cbor:"4,keyasint"`
+	CpuModel       string  `json:"m,omitempty" cbor:"4,keyasint,omitempty"` // deprecated - moved to Details struct
 	Uptime         uint64  `json:"u" cbor:"5,keyasint"`
 	Cpu            float64 `json:"cpu" cbor:"6,keyasint"`
 	MemPct         float64 `json:"mp" cbor:"7,keyasint"`
 	DiskPct        float64 `json:"dp" cbor:"8,keyasint"`
 	Bandwidth      float64 `json:"b" cbor:"9,keyasint"`
 	AgentVersion   string  `json:"v" cbor:"10,keyasint"`
-	Podman         bool    `json:"p,omitempty" cbor:"11,keyasint,omitempty"`
+	Podman         bool    `json:"p,omitempty" cbor:"11,keyasint,omitempty"` // deprecated - moved to Details struct
 	GpuPct         float64 `json:"g,omitempty" cbor:"12,keyasint,omitempty"`
 	DashboardTemp  float64 `json:"dt,omitempty" cbor:"13,keyasint,omitempty"`
-	Os             Os      `json:"os" cbor:"14,keyasint"`
-	LoadAvg1       float64 `json:"l1,omitempty" cbor:"15,keyasint,omitempty"`
-	LoadAvg5       float64 `json:"l5,omitempty" cbor:"16,keyasint,omitempty"`
-	LoadAvg15      float64 `json:"l15,omitempty" cbor:"17,keyasint,omitempty"`
+	Os             Os      `json:"os,omitempty" cbor:"14,keyasint,omitempty"`  // deprecated - moved to Details struct
+	LoadAvg1       float64 `json:"l1,omitempty" cbor:"15,keyasint,omitempty"`  // deprecated - use `la` array instead
+	LoadAvg5       float64 `json:"l5,omitempty" cbor:"16,keyasint,omitempty"`  // deprecated - use `la` array instead
+	LoadAvg15      float64 `json:"l15,omitempty" cbor:"17,keyasint,omitempty"` // deprecated - use `la` array instead
 	BandwidthBytes uint64  `json:"bb" cbor:"18,keyasint"`
-	// TODO: remove load fields in future release in favor of load avg array
+
 	LoadAvg        [3]float64         `json:"la,omitempty" cbor:"19,keyasint"`
 	ConnectionType ConnectionType     `json:"ct,omitempty" cbor:"20,keyasint,omitempty,omitzero"`
 	ExtraFsPct     map[string]float64 `json:"efs,omitempty" cbor:"21,keyasint,omitempty"`
+	Services       []uint16           `json:"sv,omitempty" cbor:"22,keyasint,omitempty"` // [totalServices, numFailedServices]
+	Battery        [2]uint8           `json:"bat,omitzero" cbor:"23,keyasint,omitzero"`  // [percent, charge state]
+}
+
+// Data that does not change during process lifetime and is not needed in All Systems table
+type Details struct {
+	Hostname      string        `cbor:"0,keyasint"`
+	Kernel        string        `cbor:"1,keyasint,omitempty"`
+	Cores         int           `cbor:"2,keyasint"`
+	Threads       int           `cbor:"3,keyasint"`
+	CpuModel      string        `cbor:"4,keyasint"`
+	Os            Os            `cbor:"5,keyasint"`
+	OsName        string        `cbor:"6,keyasint"`
+	Arch          string        `cbor:"7,keyasint"`
+	Podman        bool          `cbor:"8,keyasint,omitempty"`
+	MemoryTotal   uint64        `cbor:"9,keyasint"`
+	SmartInterval time.Duration `cbor:"10,keyasint,omitempty"`
 }
 
 // Final data structure to return to the hub
@@ -155,4 +174,5 @@ type CombinedData struct {
 	Info            Info               `json:"info" cbor:"1,keyasint"`
 	Containers      []*container.Stats `json:"container" cbor:"2,keyasint"`
 	SystemdServices []*systemd.Service `json:"systemd,omitempty" cbor:"3,keyasint,omitempty"`
+	Details         *Details           `cbor:"4,keyasint,omitempty"`
 }

internal/ghupdate/ghupdate.go

@@ -11,6 +11,7 @@ import (
 	"log/slog"
 	"net/http"
 	"os"
+	"os/exec"
 	"path/filepath"
 	"runtime"
 	"strings"
@@ -33,7 +34,7 @@ func ColorPrint(color, text string) {
 	fmt.Println(color + text + colorReset)
 }
 
-func ColorPrintf(color, format string, args ...interface{}) {
+func ColorPrintf(color, format string, args ...any) {
 	fmt.Printf(color+format+colorReset+"\n", args...)
 }
 
@@ -345,5 +346,32 @@ func archiveSuffix(binaryName, goos, goarch string) string {
 	if goos == "windows" {
 		return fmt.Sprintf("%s_%s_%s.zip", binaryName, goos, goarch)
 	}
+	// Use glibc build for agent on glibc systems (includes NVML support via purego)
+	if binaryName == "beszel-agent" && goos == "linux" && goarch == "amd64" && isGlibc() {
+		return fmt.Sprintf("%s_%s_%s_glibc.tar.gz", binaryName, goos, goarch)
+	}
 	return fmt.Sprintf("%s_%s_%s.tar.gz", binaryName, goos, goarch)
 }
+
+func isGlibc() bool {
+	for _, path := range []string{
+		"/lib64/ld-linux-x86-64.so.2",                // common on many distros
+		"/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2", // Debian/Ubuntu
+		"/lib/ld-linux-x86-64.so.2",                  // alternate
+	} {
+		if _, err := os.Stat(path); err == nil {
+			return true
+		}
+	}
+	// Fallback to ldd output when present (musl ldd reports musl, glibc reports GNU libc/glibc).
+	if lddPath, err := exec.LookPath("ldd"); err == nil {
+		out, err := exec.Command(lddPath, "--version").CombinedOutput()
+		if err == nil {
+			s := strings.ToLower(string(out))
+			if strings.Contains(s, "gnu libc") || strings.Contains(s, "glibc") {
+				return true
+			}
+		}
+	}
+	return false
+}

internal/ghupdate/selinux.go

@@ -0,0 +1,66 @@
+package ghupdate
+
+import (
+	"fmt"
+	"os/exec"
+	"strings"
+)
+
+// HandleSELinuxContext restores or applies the correct SELinux label to the binary.
+func HandleSELinuxContext(path string) error {
+	out, err := exec.Command("getenforce").Output()
+	if err != nil {
+		// SELinux not enabled or getenforce not available
+		return nil
+	}
+	state := strings.TrimSpace(string(out))
+	if state == "Disabled" {
+		return nil
+	}
+
+	ColorPrint(ColorYellow, "SELinux is enabled; applying context…")
+
+	// Try persistent context via semanage+restorecon
+	if success := trySemanageRestorecon(path); success {
+		return nil
+	}
+
+	// Fallback to temporary context via chcon
+	if chconPath, err := exec.LookPath("chcon"); err == nil {
+		if err := exec.Command(chconPath, "-t", "bin_t", path).Run(); err != nil {
+			return fmt.Errorf("chcon failed: %w", err)
+		}
+		return nil
+	}
+
+	return fmt.Errorf("no SELinux tools available (semanage/restorecon or chcon)")
+}
+
+// trySemanageRestorecon attempts to set persistent SELinux context using semanage and restorecon.
+// Returns true if successful, false otherwise.
+func trySemanageRestorecon(path string) bool {
+	semanagePath, err := exec.LookPath("semanage")
+	if err != nil {
+		return false
+	}
+
+	restoreconPath, err := exec.LookPath("restorecon")
+	if err != nil {
+		return false
+	}
+
+	// Try to add the fcontext rule; if it already exists, try to modify it
+	if err := exec.Command(semanagePath, "fcontext", "-a", "-t", "bin_t", path).Run(); err != nil {
+		// Rule may already exist, try modify instead
+		if err := exec.Command(semanagePath, "fcontext", "-m", "-t", "bin_t", path).Run(); err != nil {
+			return false
+		}
+	}
+
+	// Apply the context with restorecon
+	if err := exec.Command(restoreconPath, "-v", path).Run(); err != nil {
+		return false
+	}
+
+	return true
+}

internal/ghupdate/selinux_test.go

@@ -0,0 +1,53 @@
+package ghupdate
+
+import (
+	"os"
+	"os/exec"
+	"path/filepath"
+	"testing"
+)
+
+func TestHandleSELinuxContext_NoSELinux(t *testing.T) {
+	// Skip on SELinux systems - this test is for non-SELinux behavior
+	if _, err := exec.LookPath("getenforce"); err == nil {
+		t.Skip("skipping on SELinux-enabled system")
+	}
+
+	// On systems without SELinux, getenforce will fail and the function
+	// should return nil without error
+	tempFile := filepath.Join(t.TempDir(), "test-binary")
+	if err := os.WriteFile(tempFile, []byte("test"), 0755); err != nil {
+		t.Fatalf("failed to create temp file: %v", err)
+	}
+
+	err := HandleSELinuxContext(tempFile)
+	if err != nil {
+		t.Errorf("HandleSELinuxContext() on non-SELinux system returned error: %v", err)
+	}
+}
+
+func TestHandleSELinuxContext_InvalidPath(t *testing.T) {
+	// Skip on SELinux systems - this test is for non-SELinux behavior
+	if _, err := exec.LookPath("getenforce"); err == nil {
+		t.Skip("skipping on SELinux-enabled system")
+	}
+
+	// On non-SELinux systems, getenforce fails early so even invalid paths succeed
+	err := HandleSELinuxContext("/nonexistent/path/binary")
+	if err != nil {
+		t.Errorf("HandleSELinuxContext() with invalid path on non-SELinux system returned error: %v", err)
+	}
+}
+
+func TestTrySemanageRestorecon_NoTools(t *testing.T) {
+	// Skip if semanage is available (we don't want to modify system SELinux policy)
+	if _, err := exec.LookPath("semanage"); err == nil {
+		t.Skip("skipping on system with semanage available")
+	}
+
+	// Should return false when semanage is not available
+	result := trySemanageRestorecon("/some/path")
+	if result {
+		t.Error("trySemanageRestorecon() returned true when semanage is not available")
+	}
+}

internal/hub/agent_connect.go

@@ -66,6 +66,15 @@ func (acr *agentConnectRequest) agentConnect() (err error) {
 
 	// Check if token is an active universal token
 	acr.userId, acr.isUniversalToken = universalTokenMap.GetMap().GetOk(acr.token)
+	if !acr.isUniversalToken {
+		// Fallback: check for a permanent universal token stored in the DB
+		if rec, err := acr.hub.FindFirstRecordByFilter("universal_tokens", "token = {:token}", dbx.Params{"token": acr.token}); err == nil {
+			if userID := rec.GetString("user"); userID != "" {
+				acr.userId = userID
+				acr.isUniversalToken = true
+			}
+		}
+	}
 
 	// Find matching fingerprint records for this token
 	fpRecords := getFingerprintRecordsByToken(acr.token, acr.hub)

internal/hub/agent_connect_test.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package hub
 
@@ -10,6 +9,7 @@ import (
 	"net/http/httptest"
 	"os"
 	"path/filepath"
+	"runtime"
 	"strings"
 	"testing"
 	"time"
@@ -35,6 +35,26 @@ func createTestHub(t testing.TB) (*Hub, *pbtests.TestApp, error) {
 	return NewHub(testApp), testApp, nil
 }
 
+// cleanupTestHub stops background system goroutines before tearing down the app.
+func cleanupTestHub(hub *Hub, testApp *pbtests.TestApp) {
+	if hub != nil {
+		sm := hub.GetSystemManager()
+		sm.RemoveAllSystems()
+		// Give updater goroutines a brief window to observe cancellation before DB teardown.
+		for range 20 {
+			if sm.GetSystemCount() == 0 {
+				break
+			}
+			runtime.Gosched()
+			time.Sleep(5 * time.Millisecond)
+		}
+		time.Sleep(20 * time.Millisecond)
+	}
+	if testApp != nil {
+		testApp.Cleanup()
+	}
+}
+
 // Helper function to create a test record
 func createTestRecord(app core.App, collection string, data map[string]any) (*core.Record, error) {
 	col, err := app.FindCachedCollectionByNameOrId(collection)
@@ -64,7 +84,7 @@ func TestValidateAgentHeaders(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	defer testApp.Cleanup()
+	defer cleanupTestHub(hub, testApp)
 
 	testCases := []struct {
 		name          string
@@ -145,7 +165,7 @@ func TestGetAllFingerprintRecordsByToken(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	defer testApp.Cleanup()
+	defer cleanupTestHub(hub, testApp)
 
 	// create test user
 	userRecord, err := createTestUser(testApp)
@@ -235,7 +255,7 @@ func TestSetFingerprint(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	defer testApp.Cleanup()
+	defer cleanupTestHub(hub, testApp)
 
 	// Create test user
 	userRecord, err := createTestUser(testApp)
@@ -315,7 +335,7 @@ func TestCreateSystemFromAgentData(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	defer testApp.Cleanup()
+	defer cleanupTestHub(hub, testApp)
 
 	// Create test user
 	userRecord, err := createTestUser(testApp)
@@ -425,7 +445,7 @@ func TestUniversalTokenFlow(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	defer testApp.Cleanup()
+	defer cleanupTestHub(nil, testApp)
 
 	// Create test user
 	userRecord, err := createTestUser(testApp)
@@ -493,7 +513,7 @@ func TestAgentConnect(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	defer testApp.Cleanup()
+	defer cleanupTestHub(hub, testApp)
 
 	// Create test user
 	userRecord, err := createTestUser(testApp)
@@ -652,7 +672,7 @@ func TestHandleAgentConnect(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	defer testApp.Cleanup()
+	defer cleanupTestHub(hub, testApp)
 
 	// Create test user
 	userRecord, err := createTestUser(testApp)
@@ -737,7 +757,7 @@ func TestAgentWebSocketIntegration(t *testing.T) {
 	// Create hub and test app
 	hub, testApp, err := createTestHub(t)
 	require.NoError(t, err)
-	defer testApp.Cleanup()
+	defer cleanupTestHub(hub, testApp)
 
 	// Get the hub's SSH key
 	hubSigner, err := hub.GetSSHKey("")
@@ -942,6 +962,8 @@ func TestAgentWebSocketIntegration(t *testing.T) {
 				}
 			}
 
+			time.Sleep(20 * time.Millisecond)
+
 			// Verify fingerprint state by re-reading the specific record
 			updatedFingerprintRecord, err := testApp.FindRecordById("fingerprints", fingerprintRecord.Id)
 			require.NoError(t, err)
@@ -976,7 +998,7 @@ func TestMultipleSystemsWithSameUniversalToken(t *testing.T) {
 	// Create hub and test app
 	hub, testApp, err := createTestHub(t)
 	require.NoError(t, err)
-	defer testApp.Cleanup()
+	defer cleanupTestHub(hub, testApp)
 
 	// Get the hub's SSH key
 	hubSigner, err := hub.GetSSHKey("")
@@ -1144,6 +1166,8 @@ func TestMultipleSystemsWithSameUniversalToken(t *testing.T) {
 					assert.Equal(t, systemCount, systemsAfterCount, "Total system count should remain the same")
 				}
 
+				time.Sleep(20 * time.Millisecond)
+
 				// Verify that a fingerprint record exists for this fingerprint
 				fingerprints, err := testApp.FindRecordsByFilter("fingerprints", "token = {:token} && fingerprint = {:fingerprint}", "", -1, 0, map[string]any{
 					"token":       universalToken,
@@ -1169,11 +1193,111 @@ func TestMultipleSystemsWithSameUniversalToken(t *testing.T) {
 	}
 }
 
+// TestPermanentUniversalTokenFromDB verifies that a universal token persisted in the DB
+// (universal_tokens collection) is accepted for agent self-registration even if it is not
+// present in the in-memory universalTokenMap.
+func TestPermanentUniversalTokenFromDB(t *testing.T) {
+	// Create hub and test app
+	hub, testApp, err := createTestHub(t)
+	require.NoError(t, err)
+	defer cleanupTestHub(hub, testApp)
+
+	// Get the hub's SSH key
+	hubSigner, err := hub.GetSSHKey("")
+	require.NoError(t, err)
+	goodPubKey := hubSigner.PublicKey()
+
+	// Create test user
+	userRecord, err := createTestUser(testApp)
+	require.NoError(t, err)
+
+	// Create a permanent universal token record in the DB (do NOT add it to universalTokenMap)
+	universalToken := "db-universal-token-123"
+	_, err = createTestRecord(testApp, "universal_tokens", map[string]any{
+		"user":  userRecord.Id,
+		"token": universalToken,
+	})
+	require.NoError(t, err)
+
+	// Create HTTP server with the actual API route
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path == "/api/beszel/agent-connect" {
+			acr := &agentConnectRequest{
+				hub: hub,
+				req: r,
+				res: w,
+			}
+			acr.agentConnect()
+		} else {
+			http.NotFound(w, r)
+		}
+	}))
+	defer ts.Close()
+
+	// Create and configure agent
+	agentDataDir := t.TempDir()
+	err = os.WriteFile(filepath.Join(agentDataDir, "fingerprint"), []byte("db-token-system-fingerprint"), 0644)
+	require.NoError(t, err)
+
+	testAgent, err := agent.NewAgent(agentDataDir)
+	require.NoError(t, err)
+
+	// Set up environment variables for the agent
+	os.Setenv("BESZEL_AGENT_HUB_URL", ts.URL)
+	os.Setenv("BESZEL_AGENT_TOKEN", universalToken)
+	defer func() {
+		os.Unsetenv("BESZEL_AGENT_HUB_URL")
+		os.Unsetenv("BESZEL_AGENT_TOKEN")
+	}()
+
+	// Start agent in background
+	done := make(chan error, 1)
+	go func() {
+		serverOptions := agent.ServerOptions{
+			Network: "tcp",
+			Addr:    "127.0.0.1:46050",
+			Keys:    []ssh.PublicKey{goodPubKey},
+		}
+		done <- testAgent.Start(serverOptions)
+	}()
+
+	// Wait for connection result
+	maxWait := 2 * time.Second
+	time.Sleep(20 * time.Millisecond)
+	checkInterval := 20 * time.Millisecond
+	timeout := time.After(maxWait)
+	ticker := time.Tick(checkInterval)
+
+	connectionManager := testAgent.GetConnectionManager()
+	for {
+		select {
+		case <-timeout:
+			t.Fatalf("Expected connection to succeed but timed out - agent state: %d", connectionManager.State)
+		case <-ticker:
+			if connectionManager.State == agent.WebSocketConnected {
+				// Success
+				goto verify
+			}
+		case err := <-done:
+			// If Start returns early, treat it as failure
+			if err != nil {
+				t.Fatalf("Agent failed to start/connect: %v", err)
+			}
+		}
+	}
+
+verify:
+	// Verify that a system was created for the user (self-registration path)
+	systemsAfter, err := testApp.FindRecordsByFilter("systems", "users ~ {:userId}", "", -1, 0, map[string]any{"userId": userRecord.Id})
+	require.NoError(t, err)
+	require.NotEmpty(t, systemsAfter, "Expected a system to be created for DB-backed universal token")
+}
+
 // TestFindOrCreateSystemForToken tests the findOrCreateSystemForToken function
 func TestFindOrCreateSystemForToken(t *testing.T) {
 	hub, testApp, err := createTestHub(t)
 	require.NoError(t, err)
-	defer testApp.Cleanup()
+	defer cleanupTestHub(hub, testApp)
 
 	// Create test user
 	userRecord, err := createTestUser(testApp)

internal/hub/config/config_test.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package config_test
 

internal/hub/expirymap/expirymap_test.go

@@ -1,5 +1,4 @@
 //go:build testing
-// +build testing
 
 package expirymap
 
@@ -415,7 +414,11 @@ func TestExpiryMap_RemoveValue_WithExpiration(t *testing.T) {
 	// Wait for first value to expire
 	time.Sleep(time.Millisecond * 20)
 
-	// Try to remove the expired value - should remove one of the "value1" entries
+	// Trigger lazy cleanup of the expired key
+	_, ok := em.GetOk("key1")
+	assert.False(t, ok)
+
+	// Try to remove the remaining "value1" entry (key3)
 	removedValue, ok := em.RemovebyValue("value1")
 	assert.True(t, ok)
 	assert.Equal(t, "value1", removedValue)
@@ -423,14 +426,9 @@ func TestExpiryMap_RemoveValue_WithExpiration(t *testing.T) {
 	// Should still have key2 (different value)
 	assert.True(t, em.Has("key2"))
 
-	// Should have removed one of the "value1" entries (either key1 or key3)
-	// But we can't predict which one due to map iteration order
-	key1Exists := em.Has("key1")
-	key3Exists := em.Has("key3")
-
-	// Exactly one of key1 or key3 should be gone
-	assert.False(t, key1Exists && key3Exists) // Both shouldn't exist
-	assert.True(t, key1Exists || key3Exists)  // At least one should still exist
+	// key1 should be gone due to expiration and key3 should be removed by value.
+	assert.False(t, em.Has("key1"))
+	assert.False(t, em.Has("key3"))
 }
 
 func TestExpiryMap_ValueOperations_Integration(t *testing.T) {

internal/hub/heartbeat/heartbeat.go

@@ -0,0 +1,303 @@
+// Package heartbeat sends periodic outbound pings to an external monitoring
+// endpoint (e.g. BetterStack, Uptime Kuma, Healthchecks.io) so operators can
+// monitor Beszel without exposing it to the internet.
+package heartbeat
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/henrygd/beszel"
+	"github.com/pocketbase/pocketbase/core"
+)
+
+// Default values for heartbeat configuration.
+const (
+	defaultInterval = 60 // seconds
+	httpTimeout     = 10 * time.Second
+)
+
+// Payload is the JSON body sent with each heartbeat request.
+type Payload struct {
+	// Status is "ok" when all non-paused systems are up, "warn" when alerts
+	// are triggered but no systems are down, and "error" when any system is down.
+	Status    string         `json:"status"`
+	Timestamp string         `json:"timestamp"`
+	Msg       string         `json:"msg"`
+	Systems   SystemsSummary `json:"systems"`
+	Down      []SystemInfo   `json:"down_systems,omitempty"`
+	Alerts    []AlertInfo    `json:"triggered_alerts,omitempty"`
+	Version   string         `json:"beszel_version"`
+}
+
+// SystemsSummary contains counts of systems by status.
+type SystemsSummary struct {
+	Total   int `json:"total"`
+	Up      int `json:"up"`
+	Down    int `json:"down"`
+	Paused  int `json:"paused"`
+	Pending int `json:"pending"`
+}
+
+// SystemInfo identifies a system that is currently down.
+type SystemInfo struct {
+	ID   string `json:"id" db:"id"`
+	Name string `json:"name" db:"name"`
+	Host string `json:"host" db:"host"`
+}
+
+// AlertInfo describes a currently triggered alert.
+type AlertInfo struct {
+	SystemID   string  `json:"system_id"`
+	SystemName string  `json:"system_name"`
+	AlertName  string  `json:"alert_name"`
+	Threshold  float64 `json:"threshold"`
+}
+
+// Config holds heartbeat settings read from environment variables.
+type Config struct {
+	URL      string // endpoint to ping
+	Interval int    // seconds between pings
+	Method   string // HTTP method (GET or POST, default POST)
+}
+
+// Heartbeat manages the periodic outbound health check.
+type Heartbeat struct {
+	app    core.App
+	config Config
+	client *http.Client
+}
+
+// New creates a Heartbeat if configuration is present.
+// Returns nil if HEARTBEAT_URL is not set (feature disabled).
+func New(app core.App, getEnv func(string) (string, bool)) *Heartbeat {
+	url, _ := getEnv("HEARTBEAT_URL")
+	url = strings.TrimSpace(url)
+	if app == nil || url == "" {
+		return nil
+	}
+
+	interval := defaultInterval
+	if v, ok := getEnv("HEARTBEAT_INTERVAL"); ok {
+		if parsed, err := strconv.Atoi(v); err == nil && parsed > 0 {
+			interval = parsed
+		}
+	}
+
+	method := http.MethodPost
+	if v, ok := getEnv("HEARTBEAT_METHOD"); ok {
+		v = strings.ToUpper(strings.TrimSpace(v))
+		if v == http.MethodGet || v == http.MethodHead {
+			method = v
+		}
+	}
+
+	return &Heartbeat{
+		app: app,
+		config: Config{
+			URL:      url,
+			Interval: interval,
+			Method:   method,
+		},
+		client: &http.Client{Timeout: httpTimeout},
+	}
+}
+
+// Start begins the heartbeat loop. It blocks and should be called in a goroutine.
+// The loop runs until the provided stop channel is closed.
+func (hb *Heartbeat) Start(stop <-chan struct{}) {
+	sanitizedURL := sanitizeHeartbeatURL(hb.config.URL)
+	hb.app.Logger().Info("Heartbeat enabled",
+		"url", sanitizedURL,
+		"interval", fmt.Sprintf("%ds", hb.config.Interval),
+		"method", hb.config.Method,
+	)
+
+	// Send an initial heartbeat immediately on startup.
+	hb.send()
+
+	ticker := time.NewTicker(time.Duration(hb.config.Interval) * time.Second)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-stop:
+			return
+		case <-ticker.C:
+			hb.send()
+		}
+	}
+}
+
+// Send performs a single heartbeat ping. Exposed for the test-heartbeat API endpoint.
+func (hb *Heartbeat) Send() error {
+	return hb.send()
+}
+
+// GetConfig returns the current heartbeat configuration.
+func (hb *Heartbeat) GetConfig() Config {
+	return hb.config
+}
+
+func (hb *Heartbeat) send() error {
+	var req *http.Request
+	var err error
+	method := normalizeMethod(hb.config.Method)
+
+	if method == http.MethodGet || method == http.MethodHead {
+		req, err = http.NewRequest(method, hb.config.URL, nil)
+	} else {
+		payload, payloadErr := hb.buildPayload()
+		if payloadErr != nil {
+			hb.app.Logger().Error("Heartbeat: failed to build payload", "err", payloadErr)
+			return payloadErr
+		}
+
+		body, jsonErr := json.Marshal(payload)
+		if jsonErr != nil {
+			hb.app.Logger().Error("Heartbeat: failed to marshal payload", "err", jsonErr)
+			return jsonErr
+		}
+		req, err = http.NewRequest(http.MethodPost, hb.config.URL, bytes.NewReader(body))
+		if err == nil {
+			req.Header.Set("Content-Type", "application/json")
+		}
+	}
+
+	if err != nil {
+		hb.app.Logger().Error("Heartbeat: failed to create request", "err", err)
+		return err
+	}
+
+	req.Header.Set("User-Agent", "Beszel-Heartbeat")
+
+	resp, err := hb.client.Do(req)
+	if err != nil {
+		hb.app.Logger().Error("Heartbeat: request failed", "url", sanitizeHeartbeatURL(hb.config.URL), "err", err)
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode >= 400 {
+		hb.app.Logger().Warn("Heartbeat: non-success response",
+			"url", sanitizeHeartbeatURL(hb.config.URL),
+			"status", resp.StatusCode,
+		)
+		return fmt.Errorf("heartbeat endpoint returned status %d", resp.StatusCode)
+	}
+
+	return nil
+}
+
+func (hb *Heartbeat) buildPayload() (*Payload, error) {
+	db := hb.app.DB()
+
+	// Count systems by status.
+	var systemCounts []struct {
+		Status string `db:"status"`
+		Count  int    `db:"cnt"`
+	}
+	err := db.NewQuery("SELECT status, COUNT(*) as cnt FROM systems GROUP BY status").All(&systemCounts)
+	if err != nil {
+		return nil, fmt.Errorf("query system counts: %w", err)
+	}
+
+	summary := SystemsSummary{}
+	for _, sc := range systemCounts {
+		switch sc.Status {
+		case "up":
+			summary.Up = sc.Count
+		case "down":
+			summary.Down = sc.Count
+		case "paused":
+			summary.Paused = sc.Count
+		case "pending":
+			summary.Pending = sc.Count
+		}
+		summary.Total += sc.Count
+	}
+
+	// Get names of down systems.
+	var downSystems []SystemInfo
+	if summary.Down > 0 {
+		err = db.NewQuery("SELECT id, name, host FROM systems WHERE status = 'down'").All(&downSystems)
+		if err != nil {
+			return nil, fmt.Errorf("query down systems: %w", err)
+		}
+	}
+
+	// Get triggered alerts with system names.
+	var triggeredAlerts []struct {
+		SystemID   string  `db:"system"`
+		SystemName string  `db:"system_name"`
+		AlertName  string  `db:"name"`
+		Value      float64 `db:"value"`
+	}
+	err = db.NewQuery(`
+		SELECT a.system, s.name as system_name, a.name, a.value
+		FROM alerts a
+		JOIN systems s ON a.system = s.id
+		WHERE a.triggered = true
+	`).All(&triggeredAlerts)
+	if err != nil {
+		// Non-fatal: alerts info is supplementary.
+		triggeredAlerts = nil
+	}
+
+	alerts := make([]AlertInfo, 0, len(triggeredAlerts))
+	for _, ta := range triggeredAlerts {
+		alerts = append(alerts, AlertInfo{
+			SystemID:   ta.SystemID,
+			SystemName: ta.SystemName,
+			AlertName:  ta.AlertName,
+			Threshold:  ta.Value,
+		})
+	}
+
+	// Determine overall status.
+	status := "ok"
+	msg := "All systems operational"
+	if summary.Down > 0 {
+		status = "error"
+		names := make([]string, len(downSystems))
+		for i, ds := range downSystems {
+			names[i] = ds.Name
+		}
+		msg = fmt.Sprintf("%d system(s) down: %s", summary.Down, strings.Join(names, ", "))
+	} else if len(alerts) > 0 {
+		status = "warn"
+		msg = fmt.Sprintf("%d alert(s) triggered", len(alerts))
+	}
+
+	return &Payload{
+		Status:    status,
+		Timestamp: time.Now().UTC().Format(time.RFC3339),
+		Msg:       msg,
+		Systems:   summary,
+		Down:      downSystems,
+		Alerts:    alerts,
+		Version:   beszel.Version,
+	}, nil
+}
+
+func normalizeMethod(method string) string {
+	upper := strings.ToUpper(strings.TrimSpace(method))
+	if upper == http.MethodGet || upper == http.MethodHead || upper == http.MethodPost {
+		return upper
+	}
+	return http.MethodPost
+}
+
+func sanitizeHeartbeatURL(rawURL string) string {
+	parsed, err := url.Parse(strings.TrimSpace(rawURL))
+	if err != nil || parsed.Scheme == "" || parsed.Host == "" {
+		return "<invalid-url>"
+	}
+	return parsed.Scheme + "://" + parsed.Host
+}

internal/hub/heartbeat/heartbeat_test.go

@@ -0,0 +1,257 @@
+//go:build testing
+
+package heartbeat_test
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/henrygd/beszel/internal/hub/heartbeat"
+	beszeltests "github.com/henrygd/beszel/internal/tests"
+	"github.com/pocketbase/pocketbase/core"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestNew(t *testing.T) {
+	t.Run("returns nil when app is missing", func(t *testing.T) {
+		hb := heartbeat.New(nil, envGetter(map[string]string{
+			"HEARTBEAT_URL": "https://heartbeat.example.com/ping",
+		}))
+		assert.Nil(t, hb)
+	})
+
+	t.Run("returns nil when URL is missing", func(t *testing.T) {
+		app := newTestHub(t)
+		hb := heartbeat.New(app.App, func(string) (string, bool) {
+			return "", false
+		})
+		assert.Nil(t, hb)
+	})
+
+	t.Run("parses and normalizes config values", func(t *testing.T) {
+		app := newTestHub(t)
+		env := map[string]string{
+			"HEARTBEAT_URL":      "  https://heartbeat.example.com/ping  ",
+			"HEARTBEAT_INTERVAL": "90",
+			"HEARTBEAT_METHOD":   "head",
+		}
+		getEnv := func(key string) (string, bool) {
+			v, ok := env[key]
+			return v, ok
+		}
+
+		hb := heartbeat.New(app.App, getEnv)
+		require.NotNil(t, hb)
+		cfg := hb.GetConfig()
+		assert.Equal(t, "https://heartbeat.example.com/ping", cfg.URL)
+		assert.Equal(t, 90, cfg.Interval)
+		assert.Equal(t, http.MethodHead, cfg.Method)
+	})
+}
+
+func TestSendGETDoesNotRequireAppOrDB(t *testing.T) {
+	app := newTestHub(t)
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		assert.Equal(t, http.MethodGet, r.Method)
+		assert.Equal(t, "Beszel-Heartbeat", r.Header.Get("User-Agent"))
+		w.WriteHeader(http.StatusOK)
+	}))
+	defer server.Close()
+
+	hb := heartbeat.New(app.App, envGetter(map[string]string{
+		"HEARTBEAT_URL":    server.URL,
+		"HEARTBEAT_METHOD": "GET",
+	}))
+	require.NotNil(t, hb)
+
+	require.NoError(t, hb.Send())
+}
+
+func TestSendReturnsErrorOnHTTPFailureStatus(t *testing.T) {
+	app := newTestHub(t)
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusInternalServerError)
+	}))
+	defer server.Close()
+
+	hb := heartbeat.New(app.App, envGetter(map[string]string{
+		"HEARTBEAT_URL":    server.URL,
+		"HEARTBEAT_METHOD": "GET",
+	}))
+	require.NotNil(t, hb)
+
+	err := hb.Send()
+	require.Error(t, err)
+	assert.ErrorContains(t, err, "heartbeat endpoint returned status 500")
+}
+
+func TestSendPOSTBuildsExpectedStatuses(t *testing.T) {
+	tests := []struct {
+		name           string
+		setup          func(t *testing.T, app *beszeltests.TestHub, user *core.Record)
+		expectStatus   string
+		expectMsgPart  string
+		expectDown     int
+		expectAlerts   int
+		expectTotal    int
+		expectUp       int
+		expectPaused   int
+		expectPending  int
+		expectDownSumm int
+	}{
+		{
+			name: "error when at least one system is down",
+			setup: func(t *testing.T, app *beszeltests.TestHub, user *core.Record) {
+				downSystem := createTestSystem(t, app, user.Id, "db-1", "10.0.0.1", "down")
+				_ = createTestSystem(t, app, user.Id, "web-1", "10.0.0.2", "up")
+				createTriggeredAlert(t, app, user.Id, downSystem.Id, "CPU", 95)
+			},
+			expectStatus:   "error",
+			expectMsgPart:  "1 system(s) down",
+			expectDown:     1,
+			expectAlerts:   1,
+			expectTotal:    2,
+			expectUp:       1,
+			expectDownSumm: 1,
+		},
+		{
+			name: "warn when only alerts are triggered",
+			setup: func(t *testing.T, app *beszeltests.TestHub, user *core.Record) {
+				system := createTestSystem(t, app, user.Id, "api-1", "10.1.0.1", "up")
+				createTriggeredAlert(t, app, user.Id, system.Id, "CPU", 90)
+			},
+			expectStatus:   "warn",
+			expectMsgPart:  "1 alert(s) triggered",
+			expectDown:     0,
+			expectAlerts:   1,
+			expectTotal:    1,
+			expectUp:       1,
+			expectDownSumm: 0,
+		},
+		{
+			name: "ok when no down systems and no alerts",
+			setup: func(t *testing.T, app *beszeltests.TestHub, user *core.Record) {
+				_ = createTestSystem(t, app, user.Id, "node-1", "10.2.0.1", "up")
+				_ = createTestSystem(t, app, user.Id, "node-2", "10.2.0.2", "paused")
+				_ = createTestSystem(t, app, user.Id, "node-3", "10.2.0.3", "pending")
+			},
+			expectStatus:   "ok",
+			expectMsgPart:  "All systems operational",
+			expectDown:     0,
+			expectAlerts:   0,
+			expectTotal:    3,
+			expectUp:       1,
+			expectPaused:   1,
+			expectPending:  1,
+			expectDownSumm: 0,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			app := newTestHub(t)
+			user := createTestUser(t, app)
+			tt.setup(t, app, user)
+
+			type requestCapture struct {
+				method      string
+				userAgent   string
+				contentType string
+				payload     heartbeat.Payload
+			}
+
+			captured := make(chan requestCapture, 1)
+			server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+				defer r.Body.Close()
+				body, err := io.ReadAll(r.Body)
+				require.NoError(t, err)
+
+				var payload heartbeat.Payload
+				require.NoError(t, json.Unmarshal(body, &payload))
+				captured <- requestCapture{
+					method:      r.Method,
+					userAgent:   r.Header.Get("User-Agent"),
+					contentType: r.Header.Get("Content-Type"),
+					payload:     payload,
+				}
+				w.WriteHeader(http.StatusNoContent)
+			}))
+			defer server.Close()
+
+			hb := heartbeat.New(app.App, envGetter(map[string]string{
+				"HEARTBEAT_URL":    server.URL,
+				"HEARTBEAT_METHOD": "POST",
+			}))
+			require.NotNil(t, hb)
+			require.NoError(t, hb.Send())
+
+			req := <-captured
+			assert.Equal(t, http.MethodPost, req.method)
+			assert.Equal(t, "Beszel-Heartbeat", req.userAgent)
+			assert.Equal(t, "application/json", req.contentType)
+
+			assert.Equal(t, tt.expectStatus, req.payload.Status)
+			assert.Contains(t, req.payload.Msg, tt.expectMsgPart)
+			assert.Equal(t, tt.expectDown, len(req.payload.Down))
+			assert.Equal(t, tt.expectAlerts, len(req.payload.Alerts))
+			assert.Equal(t, tt.expectTotal, req.payload.Systems.Total)
+			assert.Equal(t, tt.expectUp, req.payload.Systems.Up)
+			assert.Equal(t, tt.expectDownSumm, req.payload.Systems.Down)
+			assert.Equal(t, tt.expectPaused, req.payload.Systems.Paused)
+			assert.Equal(t, tt.expectPending, req.payload.Systems.Pending)
+		})
+	}
+}
+
+func newTestHub(t *testing.T) *beszeltests.TestHub {
+	t.Helper()
+	app, err := beszeltests.NewTestHub(t.TempDir())
+	require.NoError(t, err)
+	t.Cleanup(app.Cleanup)
+	return app
+}
+
+func createTestUser(t *testing.T, app *beszeltests.TestHub) *core.Record {
+	t.Helper()
+	user, err := beszeltests.CreateUser(app.App, "admin@example.com", "password123")
+	require.NoError(t, err)
+	return user
+}
+
+func createTestSystem(t *testing.T, app *beszeltests.TestHub, userID, name, host, status string) *core.Record {
+	t.Helper()
+	system, err := beszeltests.CreateRecord(app.App, "systems", map[string]any{
+		"name":   name,
+		"host":   host,
+		"port":   "45876",
+		"users":  []string{userID},
+		"status": status,
+	})
+	require.NoError(t, err)
+	return system
+}
+
+func createTriggeredAlert(t *testing.T, app *beszeltests.TestHub, userID, systemID, name string, threshold float64) *core.Record {
+	t.Helper()
+	alert, err := beszeltests.CreateRecord(app.App, "alerts", map[string]any{
+		"name":      name,
+		"system":    systemID,
+		"user":      userID,
+		"value":     threshold,
+		"min":       0,
+		"triggered": true,
+	})
+	require.NoError(t, err)
+	return alert
+}
+
+func envGetter(values map[string]string) func(string) (string, bool) {
+	return func(key string) (string, bool) {
+		v, ok := values[key]
+		return v, ok
+	}
+}

internal/hub/hub.go

@@ -9,17 +9,20 @@ import (
 	"net/url"
 	"os"
 	"path"
+	"regexp"
 	"strings"
 	"time"
 
 	"github.com/henrygd/beszel"
 	"github.com/henrygd/beszel/internal/alerts"
 	"github.com/henrygd/beszel/internal/hub/config"
+	"github.com/henrygd/beszel/internal/hub/heartbeat"
 	"github.com/henrygd/beszel/internal/hub/systems"
 	"github.com/henrygd/beszel/internal/records"
 	"github.com/henrygd/beszel/internal/users"
 
 	"github.com/google/uuid"
+	"github.com/pocketbase/dbx"
 	"github.com/pocketbase/pocketbase"
 	"github.com/pocketbase/pocketbase/apis"
 	"github.com/pocketbase/pocketbase/core"
@@ -32,11 +35,15 @@ type Hub struct {
 	um     *users.UserManager
 	rm     *records.RecordManager
 	sm     *systems.SystemManager
+	hb     *heartbeat.Heartbeat
+	hbStop chan struct{}
 	pubKey string
 	signer ssh.Signer
 	appURL string
 }
 
+var containerIDPattern = regexp.MustCompile(`^[a-fA-F0-9]{12,64}$`)
+
 // NewHub creates a new Hub instance with default configuration
 func NewHub(app core.App) *Hub {
 	hub := &Hub{}
@@ -47,6 +54,10 @@ func NewHub(app core.App) *Hub {
 	hub.rm = records.NewRecordManager(hub)
 	hub.sm = systems.NewSystemManager(hub)
 	hub.appURL, _ = GetEnv("APP_URL")
+	hub.hb = heartbeat.New(app, GetEnv)
+	if hub.hb != nil {
+		hub.hbStop = make(chan struct{})
+	}
 	return hub
 }
 
@@ -87,6 +98,10 @@ func (h *Hub) StartHub() error {
 		if err := h.sm.Initialize(); err != nil {
 			return err
 		}
+		// start heartbeat if configured
+		if h.hb != nil {
+			go h.hb.Start(h.hbStop)
+		}
 		return e.Next()
 	})
 
@@ -193,7 +208,34 @@ func setCollectionAuthSettings(app core.App) error {
 	}
 	containersListRule := strings.Replace(systemsReadRule, "users.id", "system.users.id", 1)
 	containersCollection.ListRule = &containersListRule
-	return app.Save(containersCollection)
+	if err := app.Save(containersCollection); err != nil {
+		return err
+	}
+
+	// allow all users to access system-related collections if SHARE_ALL_SYSTEMS is set
+	// these collections all have a "system" relation field
+	systemRelatedCollections := []string{"system_details", "smart_devices", "systemd_services"}
+	for _, collectionName := range systemRelatedCollections {
+		collection, err := app.FindCollectionByNameOrId(collectionName)
+		if err != nil {
+			return err
+		}
+		collection.ListRule = &containersListRule
+		// set viewRule for collections that need it (system_details, smart_devices)
+		if collection.ViewRule != nil {
+			collection.ViewRule = &containersListRule
+		}
+		// set deleteRule for smart_devices (allows user to dismiss disk warnings)
+		if collectionName == "smart_devices" {
+			deleteRule := containersListRule + " && @request.auth.role != \"readonly\""
+			collection.DeleteRule = &deleteRule
+		}
+		if err := app.Save(collection); err != nil {
+			return err
+		}
+	}
+
+	return nil
 }
 
 // registerCronJobs sets up scheduled tasks
@@ -259,6 +301,9 @@ func (h *Hub) registerApiRoutes(se *core.ServeEvent) error {
 	})
 	// send test notification
 	apiAuth.POST("/test-notification", h.SendTestNotification)
+	// heartbeat status and test
+	apiAuth.GET("/heartbeat-status", h.getHeartbeatStatus)
+	apiAuth.POST("/test-heartbeat", h.testHeartbeat)
 	// get config.yml content
 	apiAuth.GET("/config-yaml", config.GetYamlConfig)
 	// handle agent websocket connection
@@ -268,8 +313,8 @@ func (h *Hub) registerApiRoutes(se *core.ServeEvent) error {
 	// update / delete user alerts
 	apiAuth.POST("/user-alerts", alerts.UpsertUserAlerts)
 	apiAuth.DELETE("/user-alerts", alerts.DeleteUserAlerts)
-	// get SMART data
-	apiAuth.GET("/smart", h.getSmartData)
+	// refresh SMART devices for a system
+	apiAuth.POST("/smart/refresh", h.refreshSmartData)
 	// get systemd service details
 	apiAuth.GET("/systemd/info", h.getSystemdInfo)
 	// /containers routes
@@ -288,27 +333,129 @@ func (h *Hub) getUniversalToken(e *core.RequestEvent) error {
 	userID := e.Auth.Id
 	query := e.Request.URL.Query()
 	token := query.Get("token")
+	enable := query.Get("enable")
+	permanent := query.Get("permanent")
 
+	// helper for deleting any existing permanent token record for this user
+	deletePermanent := func() error {
+		rec, err := h.FindFirstRecordByFilter("universal_tokens", "user = {:user}", dbx.Params{"user": userID})
+		if err != nil {
+			return nil // no record
+		}
+		return h.Delete(rec)
+	}
+
+	// helper for upserting a permanent token record for this user
+	upsertPermanent := func(token string) error {
+		rec, err := h.FindFirstRecordByFilter("universal_tokens", "user = {:user}", dbx.Params{"user": userID})
+		if err == nil {
+			rec.Set("token", token)
+			return h.Save(rec)
+		}
+
+		col, err := h.FindCachedCollectionByNameOrId("universal_tokens")
+		if err != nil {
+			return err
+		}
+		newRec := core.NewRecord(col)
+		newRec.Set("user", userID)
+		newRec.Set("token", token)
+		return h.Save(newRec)
+	}
+
+	// Disable universal tokens (both ephemeral and permanent)
+	if enable == "0" {
+		tokenMap.RemovebyValue(userID)
+		_ = deletePermanent()
+		return e.JSON(http.StatusOK, map[string]any{"token": token, "active": false, "permanent": false})
+	}
+
+	// Enable universal token (ephemeral or permanent)
+	if enable == "1" {
+		if token == "" {
+			token = uuid.New().String()
+		}
+
+		if permanent == "1" {
+			// make token permanent (persist across restarts)
+			tokenMap.RemovebyValue(userID)
+			if err := upsertPermanent(token); err != nil {
+				return err
+			}
+			return e.JSON(http.StatusOK, map[string]any{"token": token, "active": true, "permanent": true})
+		}
+
+		// default: ephemeral mode (1 hour)
+		_ = deletePermanent()
+		tokenMap.Set(token, userID, time.Hour)
+		return e.JSON(http.StatusOK, map[string]any{"token": token, "active": true, "permanent": false})
+	}
+
+	// Read current state
+	// Prefer permanent token if it exists.
+	if rec, err := h.FindFirstRecordByFilter("universal_tokens", "user = {:user}", dbx.Params{"user": userID}); err == nil {
+		dbToken := rec.GetString("token")
+		// If no token was provided, or the caller is asking about their permanent token, return it.
+		if token == "" || token == dbToken {
+			return e.JSON(http.StatusOK, map[string]any{"token": dbToken, "active": true, "permanent": true})
+		}
+		// Token doesn't match their permanent token (avoid leaking other info)
+		return e.JSON(http.StatusOK, map[string]any{"token": token, "active": false, "permanent": false})
+	}
+
+	// No permanent token; fall back to ephemeral token map.
 	if token == "" {
 		// return existing token if it exists
 		if token, _, ok := tokenMap.GetByValue(userID); ok {
-			return e.JSON(http.StatusOK, map[string]any{"token": token, "active": true})
+			return e.JSON(http.StatusOK, map[string]any{"token": token, "active": true, "permanent": false})
 		}
 		// if no token is provided, generate a new one
 		token = uuid.New().String()
 	}
-	response := map[string]any{"token": token}
 
-	switch query.Get("enable") {
-	case "1":
-		tokenMap.Set(token, userID, time.Hour)
-	case "0":
-		tokenMap.RemovebyValue(userID)
-	}
-	_, response["active"] = tokenMap.GetOk(token)
+	// Token is considered active only if it belongs to the current user.
+	activeUser, ok := tokenMap.GetOk(token)
+	active := ok && activeUser == userID
+	response := map[string]any{"token": token, "active": active, "permanent": false}
 	return e.JSON(http.StatusOK, response)
 }
 
+// getHeartbeatStatus returns current heartbeat configuration and whether it's enabled
+func (h *Hub) getHeartbeatStatus(e *core.RequestEvent) error {
+	if e.Auth.GetString("role") != "admin" {
+		return e.ForbiddenError("Requires admin role", nil)
+	}
+	if h.hb == nil {
+		return e.JSON(http.StatusOK, map[string]any{
+			"enabled": false,
+			"msg":     "Set HEARTBEAT_URL to enable outbound heartbeat monitoring",
+		})
+	}
+	cfg := h.hb.GetConfig()
+	return e.JSON(http.StatusOK, map[string]any{
+		"enabled":  true,
+		"url":      cfg.URL,
+		"interval": cfg.Interval,
+		"method":   cfg.Method,
+	})
+}
+
+// testHeartbeat triggers a single heartbeat ping and returns the result
+func (h *Hub) testHeartbeat(e *core.RequestEvent) error {
+	if e.Auth.GetString("role") != "admin" {
+		return e.ForbiddenError("Requires admin role", nil)
+	}
+	if h.hb == nil {
+		return e.JSON(http.StatusOK, map[string]any{
+			"err": "Heartbeat not configured. Set HEARTBEAT_URL environment variable.",
+		})
+	}
+	if err := h.hb.Send(); err != nil {
+		return e.JSON(http.StatusOK, map[string]any{"err": err.Error()})
+	}
+	return e.JSON(http.StatusOK, map[string]any{"err": false})
+}
+
 // containerRequestHandler handles both container logs and info requests
 func (h *Hub) containerRequestHandler(e *core.RequestEvent, fetchFunc func(*systems.System, string) (string, error), responseKey string) error {
 	systemID := e.Request.URL.Query().Get("system")
@@ -317,6 +464,9 @@ func (h *Hub) containerRequestHandler(e *core.RequestEvent, fetchFunc func(*syst
 	if systemID == "" || containerID == "" {
 		return e.JSON(http.StatusBadRequest, map[string]string{"error": "system and container parameters are required"})
 	}
+	if !containerIDPattern.MatchString(containerID) {
+		return e.JSON(http.StatusBadRequest, map[string]string{"error": "invalid container parameter"})
+	}
 
 	system, err := h.sm.GetSystem(systemID)
 	if err != nil {
@@ -365,22 +515,25 @@ func (h *Hub) getSystemdInfo(e *core.RequestEvent) error {
 	return e.JSON(http.StatusOK, map[string]any{"details": details})
 }
 
-// getSmartData handles GET /api/beszel/smart requests
-func (h *Hub) getSmartData(e *core.RequestEvent) error {
+// refreshSmartData handles POST /api/beszel/smart/refresh requests
+// Fetches fresh SMART data from the agent and updates the collection
+func (h *Hub) refreshSmartData(e *core.RequestEvent) error {
 	systemID := e.Request.URL.Query().Get("system")
 	if systemID == "" {
 		return e.JSON(http.StatusBadRequest, map[string]string{"error": "system parameter is required"})
 	}
+
 	system, err := h.sm.GetSystem(systemID)
 	if err != nil {
 		return e.JSON(http.StatusNotFound, map[string]string{"error": "system not found"})
 	}
-	data, err := system.FetchSmartDataFromAgent()
-	if err != nil {
-		return e.JSON(http.StatusNotFound, map[string]string{"error": err.Error()})
+
+	// Fetch and save SMART devices
+	if err := system.FetchAndSaveSmartDevices(); err != nil {
+		return e.JSON(http.StatusInternalServerError, map[string]string{"error": err.Error()})
 	}
-	e.Response.Header().Set("Cache-Control", "public, max-age=60")
-	return e.JSON(http.StatusOK, data)
+
+	return e.JSON(http.StatusOK, map[string]string{"status": "ok"})
 }
 
 // generates key pair if it doesn't exist and returns signer