I also confirm that dreamwalker's solution worked for me. My setup is Dell Precission 5520 with two external Dell displays. To be able to drag the monitors, it is necessary that Built-in display is ON at least until before pressing Apply button.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1724955 Title: unable to drag monitors in Display Arrangement To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1724955/+subscriptions -- ubuntu-bugs mailing list email@example.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs