[Bug 92108] [g965] intermittent gpu hang on piglit.spec.ext_framebuffer_object.fbo-maxsize

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92108

            Bug ID: 92108
           Summary: [g965] intermittent gpu hang on
                    piglit.spec.ext_framebuffer_object.fbo-maxsize
           Product: Mesa
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: mark.a.janes at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

one of Mesa's g965 continuous integration systems encounters occasional GPU
hang on this piglit test.

 [drm] stuck on render ring
 [drm] GPU HANG: ecode 4:0:0xfde5fafd, in fbo-maxsize [8834], reason: Ring
hung, action: reset

Running the test suite with i915.reset=0, this test was found to be running in
several of the hang cases.

Strangely, otc-gfxtest-g965-02 encounters the hang, but otc-gfxtest-g965-01
does not.  The failing system is a mobile:

jenkins at otc-gfxtest-g965-02:/$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960
Integrated Graphics Controller (primary) (rev 0c)


in contrast, the working system is a desktop:
jenkins at otc-gfxtest-g965-01:/$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 82Q963/Q965 Integrated
Graphics Controller (rev 02)

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