Ubuntu 20.04 NVIDIA driver install or upgrade issues

📖 ~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

Graphics acceleration is unavailable or desktop stability degrades after NVIDIA changes.

Environment & Reproduction

System may boot to low resolution, login loop, or black screen after driver updates.

Root Cause Analysis

Driver kernel module mismatch, Secure Boot restrictions, or mixed repository packages.

Quick Triage

Confirm GPU model compatibility and current driver state before further package changes.

Step-by-Step Diagnosis

Check ubuntu-drivers devices, nvidia-smi, dkms status, and kernel module load logs.

Solution – Primary Fix

Purge conflicting NVIDIA packages, install recommended driver, and handle Secure Boot module signing.

Solution – Alternative Approaches

Use nouveau temporarily or pin a stable tested NVIDIA branch for production workloads.

Verification & Acceptance Criteria

nvidia-smi reports expected driver and GPU, with stable desktop and workload execution.

Rollback Plan

Return to previous working driver package set if new release causes regressions.

Prevention & Hardening

Test driver updates during maintenance windows and avoid mixing unsupported PPAs.

Related Errors & Cross-Refs

Linked with black screen after login, DKMS build failures, and kernel upgrade breakage.

Related tutorial: View the step-by-step tutorial for Ubuntu 20.04 LTS.

View all Ubuntu 20.04 LTS tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

Refer to Ubuntu NVIDIA docs and vendor compatibility matrices for Focal releases.