So, just as an update here while still working on a fix. You should not experience tearing if you disable compositing and use gl or vaapi output. Tearing still happens with xv/x11 due to vsync not working properly on Sandy Bridge yet, even with compositing disabled.
With compositing enabled, I guess there is not much to do - the problem happens due to the nature of compositing itself. When it is used, the windows do not render directly to screen, but to an off-screen area. So the vsync is not helpful in any case - the off-screen does not synchronizes itself with it. Such tearing is not Intel-specific, it also happens on nvidia (http://www.nvnews.net/vbulletin/showthread.php?t=149276, http://nvnews.net/vbulletin/showthread.php?t=149776), and there is a nice description at https://bugzilla.gnome.org/show_bug.cgi?id=562669 as well. As for the vsync fix for making it work with xv/x11, I still don't have a working fix for it. I'll keep this bug updated when I'll have one. Thanks! Eugeni -- 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/755841 Title: [sandybridge] video tearing To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/755841/+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