Ubuntu 14.04 LTS unmet dependencies during apt install

📖 ~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

Required software cannot be installed or upgraded.

Environment & Reproduction

Ubuntu 14.04 with mixed repositories or partial upgrade history.

Root Cause Analysis

Version pinning conflicts or stale package metadata break dependency resolution.

Quick Triage

Identify held packages and conflicting versions from apt output.

Step-by-Step Diagnosis

Audit package states, pins, and source priorities.

Solution – Primary Fix

Run repair operations, align repository versions, and complete pending upgrades.

Solution – Alternative Approaches

Manually install compatible versions or remove conflict-causing packages.

Verification & Acceptance Criteria

Apt resolves dependencies and install completes without blockers.

Rollback Plan

Reinstate previous apt preferences and package selection snapshots.

Prevention & Hardening

Avoid mixing incompatible repositories and maintain upgrade hygiene.

Related Errors & Cross-Refs

Cross-reference dpkg interrupted state and held package issues.

Related tutorial: View the step-by-step tutorial for Ubuntu 14.04 LTS.

View all Ubuntu 14.04 LTS tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

Apt dependency resolver behavior and package pinning references.