desktop-packages team mailing list archive

[Brian Murray <brian@xxxxxxxxxx>]

Hello Robert, or anyone else affected,

Accepted xserver-xorg-video-intel into vivid-proposed. The package will
build now and be available at https://launchpad.net/ubuntu/+source
/xserver-xorg-video-intel/2:2.99.917-1~exp1ubuntu2.3 in a few hours, and
then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: xserver-xorg-video-intel (Ubuntu Vivid)
       Status: In Progress => Fix Committed

** Tags added: verification-needed

-- 
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Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/1506107

Title:
  Bad webcam video rendering when using XV acceleration on Skylake gpus.

Status in HWE Next:
  Fix Released
Status in xserver-xorg-video-intel package in Ubuntu:
  Fix Released
Status in xserver-xorg-video-intel source package in Trusty:
  Invalid
Status in xserver-xorg-video-intel-lts-vivid source package in Trusty:
  In Progress
Status in xserver-xorg-video-intel source package in Vivid:
  Fix Committed
Status in xserver-xorg-video-intel-lts-vivid source package in Vivid:
  Invalid

Bug description:
  CPU: Intel(R) Core(TM) i3-6100U CPU @ 2.30GHz
  GPU: Intel Corporation Device [8086:1916] (rev 07)
  Webcam: 0bda:57e3 Realtek Semiconductor Corp.

  [Impact] 
  We noticed that webcam output on a wide range of skylake systems contained corruption during certification testing of OEM machines which uses a certain gstreamer pipeline. An example of the corruption is attached.

  [Test Case]
  1. Boot ubuntu 14.04.3 or 15.04 on a machine with a skylake intel GPU and a webcam
  2. Login system and open a terminal.
  4. Execute '$ gst-launch-0.10 v4l2src ! xvimagesink'

  Expect result:
  There should be no visual artifacts during video playing.  The artifacts will look like the attached video and be very obvious in the unfixed package.

  [Regression Potential] 
  Low, the fix is very minimal was included immediately after the 2.99.917 release was made. It consists of 2 parts, a small patch (http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/commit/?id=cc9d7f6777703037d0d7eff346dd350f4d8b3f31) and a configure option change. The configure option change was in lieu of http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/commit/?id=986cb2335c30792e24a7e2b930ecaa3fa051809a which flipped it on unconditionally and only affects i915_bpo in both of these releases as it requires a 4.0 or newer kernel (i915_bpo is a backport of i915 from 4.2 that is only used on skylake). Both of these changes are already in wily's xserver-xorg-video-intel.

  It has been tested on a large number of machines during certification,
  and also by me on sandybridge, ivybridge, broadwell and skylake
  machines.

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