[Bug 83207] [BDW rc6] GPU hang playing a video

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83207

--- Comment #26 from Gary Wang <gary.c.wang at intel.com> ---
Created attachment 108334
  --> https://bugs.freedesktop.org/attachment.cgi?id=108334&action=edit
rc6 disabled in BDW d-step CPU with kernel 3.18-rc1/Xubuntu 14.10 beta

For comment #25 (drm-intel-nightly-10/22),
If disabling rc6 by i915.enable_rc6=0 in drm-intel-nightly-10/22, it only
suffered GPU hang at the first time, and worked well at following test cycles.
It appears to be related to GPU rc6.

intel at intel-Broadwell-Client-platform:~$ ./play.sh 
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstPulseSinkClock
WARNING: from element
/GstPlayBin:playbin0/GstBin:vbin/GstBin:bin0/GstXvImageSink:xvimagesink0: A lot
of buffers are being dropped.
Additional debug info:
gstbasesink.c(2875): gst_base_sink_is_too_late ():
/GstPlayBin:playbin0/GstBin:vbin/GstBin:bin0/GstXvImageSink:xvimagesink0:
There may be a timestamping problem, or this computer is too slow.
WARNING: from element
/GstPlayBin:playbin0/GstBin:vbin/GstBin:bin0/GstXvImageSink:xvimagesink0: A lot
of buffers are being dropped.
Additional debug info:
gstbasesink.c(2875): gst_base_sink_is_too_late ():
/GstPlayBin:playbin0/GstBin:vbin/GstBin:bin0/GstXvImageSink:xvimagesink0:
There may be a timestamping problem, or this computer is too slow.
Got EOS from element "playbin0".
Execution ended after 33048083158 ns.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...
intel at intel-Broadwell-Client-platform:~$ ./play.sh 
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstPulseSinkClock
Got EOS from element "playbin0".
Execution ended after 33047536912 ns.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...

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