I was going to open a new topic but this one seems closest to what I am seeing.
For me to reproduce, a resolution change has to occur (as per @F_Behrens). It most often reproduces when I wake the laptop from suspend as the lock screen is not using the same DM (I think?!) as the desktop session.
However this only seems to occur when I have an external monitor connected. So I am not sure whether that is a contributing factor.
I have two 1440p displays connected. One goes in via USB-C, the other monitor is connected to the first via daisy-chain.
I see exactly the same on my external monitor (internal monitor sadly does not work). Fully updated Fedora 39 Beta. So far it only happened when starting games through Steam but otherwise I did not do a lot yet on that machine.
I was experiencing this pretty consistently by launching a fullscreen 3d game from steam (elden ring, surprisingly runs quite well) at a lower resolution. Things seem to run fine, but after tabbing out, the white flickering appears. kernel log shows:
The BIOS update 3.03 solved the problem for me. There are no more graphical artifacts. Chrome does not crash anymore either. However, it still happens that all programs are terminated and the system logs me out during higher loads, e.g. games. I can imagine that this will be solved over time by an update of the operating system.
I have not. I think that’s probably going to be an upstream amdgpu bug.
I’ve seen it only when using mulitple monitors, it affects multiple monitors. It MAY be with one using fractional scaling…I don’t remember the circumstances. It’s also harder to replicate with 3.03 seeming to have drastically reduced the occurences for me (only once since I updated).