Ubuntu 14.04 LTS black screen after suspend resume

📖 ~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

System resumes but screen remains blank, requiring forced reboot.

Environment & Reproduction

Ubuntu 14.04 desktop/laptop with vendor graphics stack.

Root Cause Analysis

GPU driver resume path fails to restore display pipeline.

Quick Triage

Check if system responds over SSH to isolate display-only failure.

Step-by-Step Diagnosis

Inspect suspend/resume journal logs and graphics module state.

Solution – Primary Fix

Adjust kernel parameters, driver versions, and power hooks.

Solution – Alternative Approaches

Disable deep suspend modes or use hibernate as interim workaround.

Verification & Acceptance Criteria

Multiple suspend cycles resume with functional display and input.

Rollback Plan

Restore previous graphics stack and power-management settings.

Prevention & Hardening

Validate resume reliability after kernel or driver updates.

Related Errors & Cross-Refs

Cross-reference LightDM loops and GPU firmware load errors.

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

Linux suspend debugging and Ubuntu graphics troubleshooting docs.