I have had this problem. It seems to have been related to a recent 'nvidia-settings' update. The date of the original 'bug' seems to have been a while ago which worries me whether my issue is related to this bug but the steps to reproduce are similar. I can't disable second monitor. Deleting x.org.conf then rebooting worked temporarily but problem persists.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1071334 Title: NVidia Settings fails to disable the second monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-updates/+bug/1071334/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
