[Bug 91790] TONGA hang in amdgpu_ring_lock

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Aug 28 01:49:06 PDT 2015


            Bug ID: 91790
           Summary: TONGA hang in amdgpu_ring_lock
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: master.homer at gmail.com

Created attachment 117962
  --> https://bugs.freedesktop.org/attachment.cgi?id=117962&action=edit
dmesg of hang

I've been getting random hangs in amdgpu_ring_lock, this causes X to hang,
meaning I can't use the computer at all. I can sometimes switch to a tty, but
this doesn't always work either.

I'm running Ubuntu 15.04 with mesa and libdrm from the oibaf ppa, with a
self-compiled xf86-video-amdgpu and a self-compiled kernel from agd5f,
drm-next-4.3-wip (9066b0c318589f47b754a3def4fe8ec4688dc21a).

I haven't been able to predict when the hang will happen, sometimes I can use
it for several hours before it hangs, other times it happens just a few minutes
after booting.

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