There's nothing 'private' in the UUID's of your disks.. And the logs snippets you've provided don't help. Please get a proper backtrace:
https://wiki.ubuntu.com/X/Backtracing ** Changed in: xorg (Ubuntu) Status: New => Incomplete -- 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/839776 Title: IA__gdk_screen_get_monitor_geometry: assertion `monitor_num < screen_x11->n_monitors' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/839776/+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