[Bug 76956] Graphical bug and crash [drm] stuck on render ring

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76956

Imre Deak <imre.deak at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO
                 CC|                            |chris at chris-wilson.co.uk,
                   |                            |ville.syrjala at linux.intel.c
                   |                            |om

--- Comment #2 from Imre Deak <imre.deak at gmail.com> ---
Could you provide /sys/class/drm/card0/error ?

As this looks like an IVB machines chances are that it's the same as Bug 76808.
As Chris suggested there the following commit could improve the situation:

commit f66fab8e1cd6b3127ba4c5c0d11539fbe1de1e36
Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
Date:   Tue Feb 11 19:52:06 2014 +0200

    drm/i915: Prevent MI_DISPLAY_FLIP straddling two cachelines on IVB

This is already in the -nightly kernel, so could you get a copy and give it a
try?: git://anongit.freedesktop.org/drm-intel drm-intel-nightly branch.

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