CachyOS hard lockup: Pageflip timed out! This is a bug in the amdgpu kernel driver

[frozen]

Hello! ThinkPad T14S and CachyOS is randomly hard locking. I get a black display with frozen cursor most recently

Log file displays: Pageflip timed out! This is a bug in the amdgpu kernel driver

Thank you

[cscs]

See over here;

[Tutorial] Mitigate GFX Crash/Lockup (apparent freeze) with amdgpu

There are numerous bug reports and even more possibly-related forum posts and anecdotes floating around about a surprisingly common problem with amdgpu systems. Symptoms include an apparent ‘freeze’ - though this is often actually just the gfx ceasing to be updated, while audio continues if playing, and a TTY is accessible with patience. Often triggered by h.264, fullscreen videos in browsers like firefox, or fullscreen games. Output in the logs would appear like some of the following; Pag…

[frozen]

Thanks, I responded there with more detail although my symptoms do not quite match what you’ve quoted. My tty do not seem accessible once the freeze takes hold, nothing short of a long-press powerdown will work (so far that i’ve found)