I think this happens on systems with nearby frequency options in xrandr, like 59.96 and 59.97. It looks like mutter gets confused when multiple similar frequencies are available.
** Tags removed: disco ** Tags added: focal ** Changed in: gnome-control-center (Ubuntu) Status: Won't Fix => Confirmed ** Changed in: mutter (Ubuntu) Status: Won't Fix => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788535 Title: gnome-control-center shows 120Hz display frequencies that the display doesn't support (really only 60Hz hardware) To manage notifications about this bug go to: https://bugs.launchpad.net/mutter/+bug/1788535/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs