[Bug 65332] New: [IVB: Apple MacBook PRO] glxgears cause "gpu hang" reminder messages in dmesg, but machine is reachable

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=65332

          Priority: medium
            Bug ID: 65332
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [IVB: Apple MacBook PRO] glxgears cause "gpu hang"
                    reminder messages in dmesg, but machine is reachable
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: All
          Reporter: yangweix.shui at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 80266
  --> https://bugs.freedesktop.org/attachment.cgi?id=80266&action=edit
dmesg: glxgears cause "gpu hang"

Environment:
---------------------
Kernel: (drm-intel-next-queued)92d44621ad2d083bc03920c904ca0a5eb10d9ded
Some additional commit info:
Author: Paulo Zanoni <paulo.r.zanoni at intel.com>
Date:   Fri May 31 16:33:24 2013 -0300

    drm/i915: add i915_ips_status debugfs entry

Description:
---------------------
When I start glxgears on our new IVB platform(Apple MacBook Pro), glxgears will
take a little more time to be activated. The graphics box will be black for a
while, then glxgears also worked properly. I checked the dmesg, there's some
error messages like below:

[  461.016229] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU
hung
[  461.016240] [drm] capturing error event; look for more information in
/sys/kernel/debug/dri/0/i915_error_state
[  461.019565] [drm:i915_error_work_func], resetting chip 

I also test other one IVB desktop platform, there's not this problem.

Reproduce steps:
---------------------
1. reboot machine
2. xinit & 
3. glxgears &
4. checkout dmesg

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