It is still unfortunately happening to me, but I also have a new permutation of this, my machine also happens to suffer from https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1292398, so when I boot up my machine the incorrect monitor layout is present, and I find that if I first set the main monitor correctly (because it always uses the wrong one for the main monitor), then set scaling to 200% it does work. But if I do the inverse, and first set scaling to 200% then change the main monitor, it does not work and I have to reboot and then first set the main monitor.
** Changed in: mutter (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1869042 Title: [nvidia] all monitor scaling fails due to overlapping monitors To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1869042/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs