π ~1 min read
Table of contents
Symptom & Impact
Expected live kernel fixes are not applied, increasing exposure window.
Environment & Reproduction
Ubuntu 22.04 LTS system registered to Ubuntu Pro with canonical-livepatch enabled.
Root Cause Analysis
Unsupported kernel flavor, network access issue, or stale token prevents patch retrieval.
Quick Triage
Run canonical-livepatch status –verbose and check pro status output.
Step-by-Step Diagnosis
Validate kernel compatibility, entitlement state, and outbound connectivity to service endpoints.
Solution – Primary Fix
Refresh Ubuntu Pro attachment if needed, ensure supported kernel, and restart canonical-livepatch service.
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Solution – Alternative Approaches
Apply regular kernel package updates and reboot schedule when livepatch is unavailable.
Verification & Acceptance Criteria
canonical-livepatch status reports patch state applied or no patches required.
Rollback Plan
Detach and reattach Pro token using documented procedure if client state remains inconsistent.
Prevention & Hardening
Monitor livepatch health and kernel support alignment in fleet dashboards.
Automate patch management and compliance across your fleet with our DevOps services.
Related Errors & Cross-Refs
HWE transitions and unsupported custom kernels are frequent related causes.
Related tutorial: View the step-by-step tutorial for Ubuntu 22.04 LTS.
View all Ubuntu 22.04 LTS tutorials on the Tutorials Hub β
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
Ubuntu 22.04 Ubuntu Pro and Canonical Livepatch operational guidance.
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