Weird glitches every few seconds after waking up from sleep, Wayland

[Dinomonster]

AMD iGPU - split-second graphical corruption on Linux 6.12.1

There are two possible solutions for now: Switch to pre-6.12 kernel, probably the LTS one Add amdgpu.dcdebugmask=0x10 to your kernel options to disable PSR (Panel Self Refresh) - it increases power draw, but fixes the glitches Upstream bug report (has additional relevant links in it):

This solved somewhat similar problems for me.