The simple fact to switch to a TTY reactivate the screen. There are also no issues in other windows managers than Gnome (e.g. Openbox), xrandr works well. So probably neither an Xorg nor a driver issue. It seems to be Gnome-related.
** Tags removed: kernel-bug-exists-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1300914 Title: External screen undetected after first plug To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1300914/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
