[Bug 85933] New: Rendering lockup

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=85933

            Bug ID: 85933
           Summary: Rendering lockup
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: jjpeery at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

During normal use the mouse will stop rendering, typically with Chrome running
and I suspect Flash.  From dmesg: 
[23226.816014] [drm] stuck on render ring
[23226.816027] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[23226.816029] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[23226.816035] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[23226.816040] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[23226.816045] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[23226.816787] [drm:i915_set_reset_status] *ERROR* render ring hung inside bo
(0x14b60000 ctx 0) at 0x14b60c2c
[23227.200015] [drm] GMBUS [i915 gmbus vga] timed out, falling back to bit
banging on pin 2
[23227.328023] [drm:i915_reset] *ERROR* Failed to reset chip.
/sys/class/drm/card0/error only says:
"no error state collected"

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