Screen is glitchy with colored pixels moving on Fedora 41 Laptop 13 AMD Ryzen 7040

Downgrade to Mesa 24 if possible.

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I downgraded and it seems to be working for now but will report back. As reference for others that find this thread, I ran the following commands to downgrade mesa and versionlock it so it doesn’t get upgraded by accident until the bug in mesa gets fixed

sudo dnf downgrade 'mesa*'
sudo dnf versionlock add 'mesa*' 

To unblock when bug in mesa eventually gets fixed:

sudo dnf versionlock delete 'mesa*' 
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It seems with FW there is now a fix that looks like it does fully eliminate these glitches, so only the VRR-related glitches seem to be left over: [amdgpu] Heavy artifacting in desktop applications since bump from 24.3.4 to 25.0.1 (#12809) ¡ Issues ¡ Mesa / mesa ¡ GitLab

Install Linux 6.14 with Mesa 25.0.2 (no idea if that’s specific to that 25.x version) and in the BIOS settings, set the video memory to the game optimized 4 GB option.

I still had issues with crashing in gaming mode. It was a bit different, with everything just locking up.

Update: it has been working well for me since downgrading

I’m guessing you’re experiencing a different issue, crashing or freezing was never part of this.

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I agree completely but downgrading Mesa also fixes it.