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[Launchpad Bug Tracker <1390016@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package xserver-xorg-video-intel -
2:2.99.910-0ubuntu1.3

---------------
xserver-xorg-video-intel (2:2.99.910-0ubuntu1.3) trusty-proposed; urgency=medium

  [ Maarten Lankhorst ]
  * Backport support for rotation with SNA. (LP: #1386620)

  [ Timo Aaltonen ]
  * sna-use-vmask-in-3dstate-ps.diff: Fix GPU hang on BDW with xvideo.
    (LP: #1390016)
 -- Timo Aaltonen <tjaalton@xxxxxxxxxx>   Thu, 06 Nov 2014 14:27:38 +0200

** Changed in: xserver-xorg-video-intel (Ubuntu Trusty)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1390016

Title:
  [BDW] GPU hang with xvideo

Status in HWE Next Project:
  Fix Released
Status in HWE Next trusty series:
  Fix Committed
Status in HWE Next utopic series:
  Fix Committed
Status in HWE Next vivid series:
  Fix Released
Status in X.org xf86-video-intel:
  Fix Released
Status in “xserver-xorg-video-intel” package in Ubuntu:
  Fix Released
Status in “xserver-xorg-video-intel” source package in Trusty:
  Fix Released
Status in “xserver-xorg-video-intel” source package in Utopic:
  Fix Released
Status in “xserver-xorg-video-intel” source package in Vivid:
  Fix Released

Bug description:
  [Impact] 
  Recoverable GPU hang on Broadwell when playing video, triggered at least by trying some Unity UI scaling values.

  [Test Case]
  gst-launch-1.0 videotestsrc pattern=snow ! 'video/x-raw,format=UYVY,width=640,height=360' ! xvimagesink

  the video will pause, then resume with varied success. Next attempt
  will fail.

  [Regression Potential] 
  Everything seems to work after the upstream patch.

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