[Mesa-dev] [Bug 108647] Kernel parameter GRUB_CMDLINE_LINUX_DEFAULT="quiet splash amdgpu.ppfeaturemask=0xffffffff" artifacts

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108647

--- Comment #3 from echarlie at vtluug.org ---
Created attachment 142682
  --> https://bugs.freedesktop.org/attachment.cgi?id=142682&action=edit
dmesg with 4.20.0-rc4 kernel when having the issue

As I understand, ppfeaturemask is set in order to enable manual performance
level configuration and overclocking (more importantly, the archwiki says thats
what it does, so people will do it).

I've intermittently had this issue with the 4.18 and 4.20rc* kernels with my rx
580 (I've mostly been running the 4.14lts kernel, but that has different
issues). Manually setting performance level prevents flickering and artifacting
I see on herbstluftwm (which I coudln't reproduce on openbox).

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