Graphics corrupted in F40 & F41 on Intel A750

Hello everyone!

A number of month ago I tried using F39 on my desktop computer to test and get a first experience. Everything was running fine at the time.
Last week I wanted to return and installed F40. Here I experienced graphics corruption on my main screen connected to an Intel Arc A750. When I tested F39 it was working out of the box. The corruption was present during the install from the Live Image as well as running the installed system later on. My small secondary screen running in the onboard graphics doesn’t have any problems. A few days ago I upgraded to F41, hoping it would fix the problem, but it of course did not.

As no issues occure when booting Windows on the machine I can exclude a hardware problem. The graphics corruption first appears at the gnome login screen. During the boot the fedora logo is still displayed without issues. The corruption manifests in the way that seemingly every other vertical line of pixels is offset alternatingly to the left/right by a few millimeters. Interestingly, the mouse pointer is displayed correctly even on the corrupted main screen in all cirumstances.
Unfortunately, while I can follow online adviced I am having a hard time to get to the source of the issue as I don’t know where to look for the “broken” software component (logfiles or error messages). Therefore, I have no starting point to search for solutions.

I did not install any special drivers (should I have done that?), as F39 was working fine out of the box a while ago.
Can someone please help me locating the source of the problem and support me trying to fix the issue, as the screen corruption makes the system mostly unusable in the current state?
Like, which logfiles should I have a closer look into and what messages will be relevant?

Thanks a lot,
nanority

Hello.

In case it’s of any help, I extracted the messages from ‘journalctl -b’ which appear right when I plug in the HDMI cable to the affected screen. I can’t see a smoking gun though, but maybe it’s helpful for some of you identifying the problem.