Thanks for the bug report. I've seen a couple of bugs like this in the
past. The one most relevant I think is specific to high refresh rate
displays (usually OLED) with amdgpu. I think the issue was fixed in the
newer kernel 6.14 in Ubuntu 25.04. Prior to that, a workaround was to
add this kernel parameter:
amdgpu.dcdebugmask=0x10
to turn off panel self-refresh (PSR).
** Package changed: xorg (Ubuntu) => ubuntu
** Changed in: ubuntu
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/2117036
Title:
[Asus Zenbook UN5401A] Random display pipe slowdown. Not performance
related. Screen content updates @ what feels like ~1Hz
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