This issue seems fixed in at least ubuntu 15.04 with 4.0.0-4 kernel or maybe even in an earlier kernel and ubuntu releases.
** Changed in: xorg (Ubuntu) Status: Expired => Fix Released -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1350910 Title: blank screen after suspend resume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1350910/+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