[Bug 92432] New: GPU HANG: ecode 6:0:0x00675c57, in Xorg [1341], reason: Ring hung, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92432

            Bug ID: 92432
           Summary: GPU HANG: ecode 6:0:0x00675c57, in Xorg [1341],
                    reason: Ring hung, action: reset
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: ukwt at ya.ru
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 118825
  --> https://bugs.freedesktop.org/attachment.cgi?id=118825&action=edit
GPU crash dump from /sys/class/drm/card0/error

I was watching video in mpv player in fullscreen mode. When I tried to switch
the player to windowed mode, video playback seemed to have stopped, although
sound continued to play. After a couple seconds the screen blinked and system
has returned to normal operation.

Here is what I have found in dmesg output:

[Oct12 00:30] [drm] stuck on render ring
[  +0.000844] [drm] GPU HANG: ecode 6:0:0x00675c57, in Xorg [1341], reason:
Ring hung, action: reset
[  +0.000003] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[  +0.000001] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  +0.000001] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  +0.000001] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  +0.000001] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[  +0.007142] drm/i915: Resetting chip after gpu hang

-------------------------------------------------------

My CPU is Pentium B970 (Intel HD2000).
OS: Ubuntu 15.04 fully updated.
Kernel: 3.19.0-30.
Mesa: 10.5.9-2.

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