Knowledge base for software setup, errors, and daily tool work.

Fix Chrome Black Screen on Nvidia GPU with Hardware Acceleration

If you're seeing a black screen in Chrome—especially when watching videos or scrolling—and yo...

Common Causes of Nginx Configuration Test Failure

When you run nginx -t and see an error, it usually means a syntax mistake, a missing...

How to Fix Nginx Upstream Connection Refused on Port 80

When nginx logs show "upstream connection refused" while connecting to port 80, it means ...

Chrome Startup Crash Due to Sandboxing: How to Fix

You open Chrome, it starts to load, then crashes before the window fully appears. This can happen...

Git Push Rejected Non Fast Forward: How to Fix