[Bug 74094] New: Screen turns black, kernel says gpu crash, [drm] stuck on render ring

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74094

          Priority: medium
            Bug ID: 74094
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: Screen turns black, kernel says gpu crash, [drm] stuck
                    on render ring
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: hanno at hboeck.de
          Hardware: Other
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

Created attachment 92822
  --> https://bugs.freedesktop.org/attachment.cgi?id=92822&action=edit
gzipped output of /sys/class/drm/card0/error after gpu crash

Lately, from time to time my screen turns suddenly black. The system still
works, I can access it remotely and shutdown cleanly. This happens quite often
when I try to run youtube videos with flash, so this may be related.

In the kernel log I can read this:
Jan 26 20:25:46 pc kernel: [drm] stuck on render ring
Jan 26 20:25:46 pc kernel: [drm] GPU crash dump saved to
/sys/class/drm/card0/error
Jan 26 20:25:46 pc kernel: [drm] GPU hangs can indicate a bug anywhere in the
entire gfx stack, including userspace.
Jan 26 20:25:46 pc kernel: [drm] Please file a _new_ bug report on
bugs.freedesktop.org against DRI -> DRM/Intel
Jan 26 20:25:46 pc kernel: [drm] drm/i915 developers can then reassign to the
right component if it's not a kernel issue.
Jan 26 20:25:46 pc kernel: [drm] The gpu crash dump is required to analyze gpu
hangs, so please always attach it.
Jan 26 20:25:46 pc kernel: [drm:i915_set_reset_status] *ERROR* render ring hung
inside bo (0x2e66000 ctx 0) at 0x2e66f34
Jan 26 20:25:46 pc kernel: [drm:i915_reset] *ERROR* Failed to reset chip.

I will attach the output of 
/sys/class/drm/card0/error

xorg-server is 1.15.0, kernel 3.13, xf86-video-intel 2.99.907, mesa 9.2.5,
libdrm 2.4.52. Distribution is Gentoo Linux.

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