Since about two months I’m using Fedora 33 and loving it. Being a software developer with impaired vision, I welcome the up-to-dateness of this distro compared to Debian (which I used before). Now I’ve stumbled upon something I cannot properly put into words - but I’ll try.
On a regular basis my application windows (mostly Firefox, Visual Studio Code, Thunderbird) start to go visually crazy. Characters and parts of other windows spontaneously overlap into the current window. Sometimes the blinking pattern of the VSCode cursor makes an area of 4x8 centimeters blink, too. Sometimes, a big “Fedora” pops into view at the bottom right of the screen, out of nowhere.
All this happens very quickly and seems related to keyboard and mouse actions. For example: when I open an extra tab in Firefox, I see the weird stuff beginning. I then see characters and parts of characters I never saw before - all over the screen.
Now comes the funny part: being visually impaired, I have the Orca screen reader active. It keeps on working completely normal. Even if the screen visually “hangs”, I can navigate with the keyboard and hear what I’m doing. When I restart the gnome-shell (Alt + F2, r, ENTER), the screen goes blank and I can only use my screen reader to logoff or restart the machine.
I have no idea what part of my system is responsible for the things I’m seeing. The problem started a few (kernel-?)updates ago. Now running 188.8.131.52.
Having to logoff-login or restart every time this happens is not normal.
Can someone help me figure this out?