[Bug 99718] RX480 - MCLK stuck at 300

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99718

            Bug ID: 99718
           Summary: RX480 - MCLK stuck at 300
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: b747xx at gmail.com

Created attachment 129417
  --> https://bugs.freedesktop.org/attachment.cgi?id=129417&action=edit
DMESG

I,

I just found out that the MCLK was stuck at 300Mhz on my Polaris10 card. I got
the card last week, I don't really know if it's new. I have git version of
linux, mesa, libdrm.

I can force the power to high and get the proper 2000Mhz and when I set it back
to auto, it go back down to 300Mhz, halving my EVE-Online fps by about 200%.

The SCLK is normal, It move according to load on auto and move according to
crappy cooling on high.

I got some error in the dmesg too, can be related, or no.., I attach them.

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