I think this is because the modesetting X driver is missing DRI2 page flip support, which just got added to xserver git master.
Yakkety xserver is patched to use modesetting instead of intel, so in order to use intel you need an xorg.conf. ** Package changed: gstreamer-vaapi (Ubuntu) => xorg-server (Ubuntu) ** Changed in: xorg-server (Ubuntu) Assignee: (unassigned) => Timo Aaltonen (tjaalton) ** Changed in: xorg-server (Ubuntu) Status: New => Triaged -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1621125 Title: Crashes in Totem if xserver-xorg-video-intel is not installed Status in xorg-server package in Ubuntu: Triaged Bug description: Test Case on Intel gpu: Install gstreamer1.0-vaapi Remove (purge) xserver-xorg-video-intel Reboot Open totem & or try to play an AVC video with totem What happens: $ totem libva info: VA-API version 0.39.2 libva info: va_getDriverName() returns 0 libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so libva info: Found init function __vaDriverInit_0_39 libva info: va_openDriver() returns 0 intel_do_flush_locked failed: No such file or directory Then totem crashes. If xserver-xorg-video-intel is re-installed & a reboot then totem works fine & uses hwdec on supported files. Same output as above but no "intel_do_flush_locked failed: No such file or directory" So if confirm-able then possibly xserver-xorg-video-intel should be a depend of gstreamer1.0-vaapi unless some other solution. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: gstreamer1.0-vaapi 1.8.2-1~ubuntu2 ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16 Uname: Linux 4.4.0-36-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CurrentDesktop: Unity Date: Wed Sep 7 10:41:30 2016 InstallationDate: Installed on 2016-04-26 (134 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) SourcePackage: gstreamer-vaapi UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1621125/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp