I resolved this issue using the esokrarkose tip (comment #11): dconf write /com/canonical/unity/minimize-slow-duration 3000
kernel 3.13.0-30-generic, Ubuntu 14.04, Unity and Nvidia driver version 331.67 (card is a 240GT 512MB DDR3) -- 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/1072206 Title: [nvidia] Window content is black or transparent To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1072206/+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