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 Desktop Bugs, which is subscribed to gnome-control-center in 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 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs