[Bug 86626] New: Stuck on render ring

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86626

            Bug ID: 86626
           Summary: Stuck on render ring
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: manday at gmx.net
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

On Linux slate 3.16.5-gentoo #6 SMP Sat Nov 22 11:43:01 CET 2014 x86_64
Intel(R) Pentium(R) CPU 997 @ 1.60GHz GenuineIntel GNU/Linux if frequently
happens under X.org running (presumably triggered by firefox-bin) that first,
large portions of the screen render black, a drop in performance, quickly
followed by a deadlock (no SysReq will help). When the first signs of the issue
occur, I manage to drop into TTY and kill firefox which usually stabilizes the
situation. I can then grab dmesg and the error log, which you find attached.
Clearly, I can't assert that they contain everything related to the freeze,
since I can only obtain them if the actual freeze does not occur.

I will try to reproduce the issue with current 3.18 mainline but can not
promise that I'll again be as lucky as being able to grab the logs in the
narrow window before the actual freeze.

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