Please forgive me if this is already covered somewhere, I’m using the Stack exchange app on my phone because my PC is unusable.
Today, I ran the usual updates Ubuntu provides me with, but when I turned the PC back on after shutting down, it started flickering after logging in. Sometimes it was the whole screen, sometimes the sidebar, and after at least a minute, I get kicked out onto the login screen. dmesg shows multiple context resets due to GPU hangs, whatever that means.
I already ran apt update and afterwards apt upgrade, but no luck.
What are your suggestions?