📖 ~1 min read
Table of contents
Symptom & Impact
apt reports unmet dependencies and package installation fails.
Environment & Reproduction
Common after reboot or network loss during upgrade.
Root Cause Analysis
Partially configured packages leave unresolved dependency relationships.
Quick Triage
Audit package state and run safe dependency repair.
Step-by-Step Diagnosis
Identify first failing package and held dependencies.
Solution – Primary Fix
Complete pending package setup and repair dependencies.
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Solution – Alternative Approaches
Remove conflicting package and reinstall required version.
Verification & Acceptance Criteria
No broken packages remain and upgrade completes cleanly.
Rollback Plan
Pin known-good version when regression appears.
Prevention & Hardening
Use reliable mirrors and never interrupt apt transactions.
Related Errors & Cross-Refs
Related to held packages and third-party repository conflicts.
Related tutorial: View the step-by-step tutorial for Ubuntu 22.04 LTS.
View all Ubuntu 22.04 LTS tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
Ubuntu package management recovery guidance.
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