[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 #4 from bmilreu at gmail.com ---
(In reply to echarlie from comment #3)
> Created attachment 142682 [details]
> 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).

if you dont need overclock per se you can still use manual settings without
changing default ppfeaturemask

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