[Bug 86836] New: [snb] [drm] stuck on render ring stuck on blitter ring

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86836

            Bug ID: 86836
           Summary: [snb] [drm] stuck on render ring stuck on blitter ring
           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: mariusz.libera at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 110204
  --> https://bugs.freedesktop.org/attachment.cgi?id=110204&action=edit
xorg

Firefox froze for few seconds and then it unfroze and I saw a notification from
KDE telling me that desktop effects were restarted due to graphics reset. After
that, everything seems to work as expected.
dmesg showed me:
[drm] stuck on render ring
[drm] stuck on blitter ring
[drm] GPU crash dump saved to /sys/class/drm/card0/error
[drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including
userspace.
[drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI ->
DRM/Intel
[drm] drm/i915 developers can then reassign to the right component if it's not
a kernel issue.
[drm] The gpu crash dump is required to analyze gpu hangs, so please always
attach it.


SandyBridge in Lenovo laptop

OS:              Archlinux 64bit
kernel           3.14.25 LTS
xserver          1.16.2
xorg-video-intel 2.99.916
mesa             10.3.4
libdrm           2.4.58
desktop          KDE 4.14.3

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