Thanks. Yes that shows the monitor is still connected but some bug in (gnome-control-center | mutter | nvidia driver) is preventing it from being configured properly.
As a first step please subscribe to bug 1874207 and wait until that has been declared "Fix Released" for focal. I expect an update around that time will fix a few little related issues. ** Changed in: gnome-control-center (Ubuntu) Status: Incomplete => New ** Also affects: mutter (Ubuntu) Importance: Undecided Status: New ** Also affects: nvidia-graphics-drivers-440 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1877226 Title: nvidia - external display unavailable after screen goes to sleep To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1877226/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs