Interesting. A few random troubleshooting ideas. Try moving aside your .drirc. Run a video player with its --debug option and look through its output for any noteworthy error messages. I notice a fb tiling warning in your Xorg.0.log. Do a 'tail -f /var/log/Xorg.0.log' in a console window and then reproduce the issue and see if any messages get printed in the log.
I assume by the title that you also tested with compiz running and found it did not happen in that case? If so, you could also try comparing dmesg, Xorg.0.log, etc. for the two cases and look for differences. (my guess would be vblank syncing is set differently.) ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New => Incomplete -- 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/726902 Title: Loss of vsync when using Metacity. _______________________________________________ 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