I'd say that comment #67 makes sense. I disabled Unity plugin in CCSM and got near to immediate wake-up, but on wake-up I got everything black except active window and no screen decoration as well. Attached is a screen-shot of this behavior.
** Attachment added: "2.png" https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/828761/+attachment/2665378/+files/2.png -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/828761 Title: Resume from suspend takes much more time when nvidia-current driver is installed. To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/828761/+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