[Bug 82458] New: GPU hangs during normal desktop usage

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82458

          Priority: medium
            Bug ID: 82458
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: GPU hangs during normal desktop usage
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: freedesktop at philippjacob.de
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

Created attachment 104424
  --> https://bugs.freedesktop.org/attachment.cgi?id=104424&action=edit
GPU crash dump

Using Xubuntu 14.04 (3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC
2014 x86_64 x86_64 x86_64 GNU/Linux).

Screen freezes and doesn't recover. Mouse pointer can be moved, but no action
is possible. Switching to console (Ctrl+Alt+F1) takes some time but finally
works. 

Syslog says:
kernel: [41262.418736] [drm] stuck on render ring
kernel: [41262.418745] [drm] GPU crash dump saved to /sys/class/drm/card0/error
kernel: [41262.418747] [drm] GPU hangs can indicate a bug anywhere in the
entire gfx stack, including userspace.
kernel: [41262.418749] [drm] Please file a _new_ bug report on
bugs.freedesktop.org against DRI -> DRM/Intel
kernel: [41262.418751] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
kernel: [41262.418754] [drm] The gpu crash dump is required to analyze gpu
hangs, so please always attach it.
kernel: [41262.423397] [drm:i915_set_reset_status] *ERROR* render ring hung
inside bo (0x40c8000 ctx 0) at 0x40c961c
kernel: [41268.398388] [drm] stuck on render ring
kernel: [41274.390087] [drm] stuck on render ring
kernel: [41280.405822] [drm] stuck on render ring
...

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