I have tested both nvidia driver and nouveau under unity, classic, and classic (no effects). Changing driver makes no difference. Single or dual display makes no difference. Tearing is less with classic (no effects), but still present. The only thing that solves it for me is disabling the composite extension in xorg.conf.
Seems to me like we have either bugs in both nouveau and nvidia or a bug in xorg somewhere (composite extension? GL libs?). I've filed a bug report with xorg/nouveau as well: https://bugs.freedesktop.org/show_bug.cgi?id=37681 ** Bug watch added: freedesktop.org Bugzilla #37681 http://bugs.freedesktop.org/show_bug.cgi?id=37681 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/600178 Title: Screen tearing when dragging window, in videos and other large screen redraws (on nVidia GPU) _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
