[Bug 75551] New: stuck on render ring

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75551

          Priority: medium
            Bug ID: 75551
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: stuck on render ring
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: sherpya at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

Created attachment 94794
  --> https://bugs.freedesktop.org/attachment.cgi?id=94794&action=edit
crash dump

I have a lenovo w520, somethings happens a gpu freeze for some second

[22718.418826] [drm] stuck on render ring
[22718.418829] [drm] GPU crash dump saved to /sys/class/drm/card1/error
[22718.418830] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[22718.418831] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[22718.418832] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[22718.418832] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[22718.428250] [drm:i915_set_reset_status] *ERROR* render ring hung inside bo
(0xf093000 ctx 1) at 0xf0931c8

Debian unstable
xserver-xorg                          1:7.7+6
xserver-xorg-core                     2:1.15.0-2
xserver-xorg-video-intel              2:2.21.15-2+b1

kernel:
Linux elinux 3.13-1-amd64 #1 SMP Debian 3.13.4-1 (2014-02-22) x86_64 GNU/Linux

I use kde, and patches mesa according to
https://bugs.freedesktop.org/show_bug.cgi?id=70706

I had freezes also using xorg 1.14 and without those patches

It happens almost always when switching task (with kwin composer effect)

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