Not sure, I'm right when ticking "This bug affects me too" I have a similar problem when booting in dual monitor configuration since the upgrade from trusty to utopic:
Configuration: - ASUS UX31 with an external monitor attached - no proprietary drivers used - kernel 3.16.0-23-generic - Ubuntu Utopic Unicorn - no dock used Sequence: - GRUB2 uses the external monitor, so far so good - during boot both monitors show activity - after boot only the external monitor can be used (sometimes!) even though "System Settings" > "Screen Display" marks both monitors as active - disabling and re-enabling the internal monitor doesn't effect anything - after rebooting a couple of times dual monitor setup is recognized correctly and both screens are used -- 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/1382462 Title: Desktop/windows painted incorrectly in dual monitor configuration To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1382462/+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
