[Bug 210683] Nasty amdgpu powersave regression Navi14

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=210683

--- Comment #5 from David Mak (david.18.19.21 at gmail.com) ---
Created attachment 294289
  --> https://bugzilla.kernel.org/attachment.cgi?id=294289&action=edit
git bisect for Navi 21.

Not sure if I am doing is properly, but I performed a git bisect between 5.9
and 5.10 on drivers/gpu/drm/amd.

Note that none of the supposedly "good" commits actually fixed the issue. I
just mark them as "good" because those commits either cannot modeset to my
monitor's resolution, or the kernel fails to write certain registers to my GPU
and causes my display lose signal and go to standby. So technically the "first
bad commit" is just the first commit that I can boot into SDDM/KDE and can also
reproduce the issue.

Please let me know if there are anything else I can help with. I have a spare
Vega 64 (Vega 10) card lying around, but it has its own memory clock issues as
far as I remember =/

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