Affected versions: Ubuntu 24.04 LTS

πŸ“– ~1 min read

Table of contents
  1. Symptom & Impact
  2. Environment & Reproduction
  3. Root Cause Analysis
  4. Quick Triage
  5. Step-by-Step Diagnosis
  6. Solution – Primary Fix
  7. Solution – Alternative Approaches
  8. Verification & Acceptance Criteria
  9. Rollback Plan
  10. Prevention & Hardening
  11. Related Errors & Cross-Refs
  12. References & Further Reading

Symptom & Impact

Kernel live patching is inactive, increasing reboot dependency for security updates.

Environment & Reproduction

Occurs after token changes, proxy issues, or unsupported kernel states.

canonical-livepatch status

Root Cause Analysis

Client cannot authenticate or reach service endpoint, or kernel flavor is unsupported.

Quick Triage

Check client status and machine token state.

canonical-livepatch status --verbose

Step-by-Step Diagnosis

Inspect service logs and outbound connectivity.

sudo journalctl -u snap.canonical-livepatch.canonical-livepatchd --since -2h && curl -I https://livepatch.canonical.com
Illustrative mockup for ubuntu-24-04-lts β€” livepatch_status_error
Livepatch status with attach failure β€” Illustrative mockup β€” Progressive Robot

Solution – Primary Fix

Reattach client token and refresh snap.

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sudo canonical-livepatch disable && sudo canonical-livepatch enable  && sudo snap refresh canonical-livepatch
Illustrative mockup for ubuntu-24-04-lts β€” livepatch_attach_fix
Reattaching and refreshing livepatch client β€” Illustrative mockup β€” Progressive Robot

Solution – Alternative Approaches

Apply kernel updates via normal maintenance windows when livepatch is unavailable.

Verification & Acceptance Criteria

`canonical-livepatch status` reports active patch state without errors.

Rollback Plan

Disable livepatch integration if policy or connectivity constraints persist.

Prevention & Hardening

Monitor livepatch health and token validity in host compliance checks.

Automate patch management and compliance across your fleet with our DevOps services.

Related to snapd service issues and outbound proxy TLS failures.

Related tutorial: View the step-by-step tutorial for Ubuntu 24.04 LTS.

View all Ubuntu 24.04 LTS tutorials on the Tutorials Hub β†’

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

Canonical Livepatch client administration for Ubuntu LTS.

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