I recently upgraded to Ubuntu 17.10/GNOME 3.26. Had some glitches during the transition to GNOME from Unity, as I previously partly had used Ubuntu-GNOME as well, and some extensions were killing each other, ubuntu-dock was not working etc.
I got that right, but can not solve another problem which was introduced with a bug with 14.04 - a bogus monitor I have since then: My system settings show a monitor that does not really exist, due to my nvidia optimus BIOS which seems to be announcing a VGA monitor. In the past Ubuntu versions, I could use gnome-control-center to just "switch off" this monitor - but as hard as I try, I can not find any button or switch to kill that damn monitor:
Did I miss something here comepletely? Or is it possible that GNOME 3.26 does not provide a tool to disable a monitor?!
Thanks in advance.