[Bug 97500] Cannot unbind GPU from AMDGPU

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97500

            Bug ID: 97500
           Summary: Cannot unbind GPU from AMDGPU
           Product: DRI
           Version: XOrg 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: commendsarnex at gmail.com

Created attachment 126056
  --> https://bugs.freedesktop.org/attachment.cgi?id=126056&action=edit
dmesg

Hi guys. With AMDGPU, if I try to unbind my GPU from amdgpu, I get a hard
kernel lockup. My GPU is the RX 480. I'm currently on 4.7.2, but I've tried
drm-next-4.9 also. I've tried both echo $CARD_PCI_LOCATION > unbind, and
unbinding the vtcon and then modprobe -r amdgpu. When I had my HD 7950, the
echo $CARD_PCI_LOCATION > unbind method worked every time. I'm not sure how to
get any debug info, since even an ssh session locks up. I tried using pstore,
but no logs were saved.

Please let me know if you have any ideas or need any more info.

Thanks,
Sarnex

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