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[Chris J Arges <1378188@xxxxxxxxxxxxxxxxxx>]

The verification of the Stable Release Update for xserver-xorg-video-
intel has completed successfully and the package has now been released
to -updates.  Subsequently, the Ubuntu Stable Release Updates Team is
being unsubscribed and will not receive messages about this bug report.
In the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.

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https://bugs.launchpad.net/bugs/1378188

Title:
  [GNOME3 Staging PPA] strange shadow rendered where client-side
  decorations are used

Status in xserver-xorg-video-intel package in Ubuntu:
  Fix Released
Status in xserver-xorg-video-intel-lts-utopic package in Ubuntu:
  Invalid
Status in xserver-xorg-video-intel-lts-utopic source package in Trusty:
  New
Status in xserver-xorg-video-intel source package in Utopic:
  Fix Released

Bug description:
  [Impact]
  The Intel video driver has a bug that can cause to incorrectly draw certain trapezoids. This is visible when using client side decorations in GNOME 3 (see attached screenshots).

  [Test Case]
  Run GNOME 3 with client side decorations on Intel hardware.
  Observed result:
  Shadow under window is missing corners.
  Expected result:
  Shadow looks correct.

  [Regression potential]
  Low. The fix is from upstream and just changes the logic error in the CompositeTrapezoids routine.

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