Public bug reported: 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. ** Affects: hwe-next Importance: Undecided Status: New ** Affects: xserver-xorg-video-intel (Ubuntu) Importance: Undecided Status: Fix Released ** Affects: xserver-xorg-video-intel-lts-vivid (Ubuntu) Importance: Undecided Status: New ** Affects: xserver-xorg-video-intel (Ubuntu Trusty) Importance: Undecided Status: Invalid ** Affects: xserver-xorg-video-intel-lts-vivid (Ubuntu Trusty) Importance: Undecided Assignee: Robert Hooker (sarvatt) Status: In Progress ** Affects: xserver-xorg-video-intel (Ubuntu Vivid) Importance: Undecided Assignee: Robert Hooker (sarvatt) Status: In Progress ** Affects: xserver-xorg-video-intel-lts-vivid (Ubuntu Vivid) Importance: Undecided Status: Invalid -- You received this bug notification because you are a member of Ubuntu-X, 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. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1506107/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
