Silvio, The tearing with nouveau is because nouveau disables vsync support by default. I have no idea why. To enable it, edit /etc/X11/xorg.conf:
Section "Device" Identifier "My Graphics" Driver "nouveau" Option "GLXVBlank" "on" EndSection -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/1037453 Title: compiz 1:0.9.7.8-0ubuntu1.4, performance regression To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1037453/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : compiz@lists.launchpad.net Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp