While I do see a couple of bugs when changing display scale on Xorg, I don't see the "Failed to restore previous configuration" that is the main subject here. So it sounds like this is only occurring on Xdcv.
** Tags added: jammy xrandr-scaling -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/2020782 Title: Changing display scale setting and reverting it, causes gnome-shell to error with "Failed to restore previous configuration" and other error messages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2020782/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
