[Bug 96885] New: AMDGPU Power management failure on 290X

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96885

            Bug ID: 96885
           Summary: AMDGPU Power management failure on 290X
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/AMDgpu
          Assignee: xorg-driver-ati at lists.x.org
          Reporter: thesaxophonist at gmail.com
        QA Contact: xorg-team at lists.x.org

Created attachment 124990
  --> https://bugs.freedesktop.org/attachment.cgi?id=124990&action=edit
full dmesg output

It appears that DPM support is broken in amdgpu for the XFX 290X. Here is the
most interesting line from dmesg:

[drm:ci_dpm_sw_init [amdgpu]] *ERROR* Invalid PCC GPIO: 13!

When running on the radeon driver, I see a framerate of about 20fps (at 4k) on
Unigine Heaven, while with amdgpu it's hovering around 5fps all else being
equal. I'm under the impression that amdgpu/radeon performance for Sea Islands
cards should be roughly equal. I've attached the whole dmesg log, but I'm happy
to provide any additional info to help troubleshoot this issue.

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