[Bug 73437] New: drm/i915: stuck on render ring

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73437

          Priority: medium
            Bug ID: 73437
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: drm/i915: stuck on render ring
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: alexandru.damian at intel.com
          Hardware: Other
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

Created attachment 91754
  --> https://bugs.freedesktop.org/attachment.cgi?id=91754&action=edit
content of /sys/class/drm/card0/error

I got this message in the dmesg after a brief freeze.

Ubuntu 13.10, mainline kernel: uname -a
Linux adamian-desktop 3.12.0-997-generic #201311300431 SMP Sat Nov 30 09:32:04
UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

dmesg lines:
[261690.496128] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[261690.496129] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[261690.496129] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[261690.496130] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[261690.496131] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.

The card is Ivybridge i965, with SNA enabled.

VGA PCI identifier:
00:02.0 0300: 8086:0162 (rev 09) (prog-if 00 [VGA controller])
    Subsystem: 103c:2ad5
    Flags: bus master, fast devsel, latency 0, IRQ 45
    Memory at f7800000 (64-bit, non-prefetchable) [size=4M]
    Memory at e0000000 (64-bit, prefetchable) [size=256M]
    I/O ports at f000 [size=64]
    Expansion ROM at <unassigned> [disabled]
    Capabilities: <access denied>
    Kernel driver in use: i915

Running X.org driver for i965, version:
intel(0): SNA compiled: xserver-xorg-video-intel
2:2.99.906+git20131202.9a8478da-0ubuntu0sarvatt (Robert Hooker
<sarvatt at ubuntu.com>)

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