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:

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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.

  • I think this has nothing to do with Nvidia (as stated in the title and tags on this question at the time of writing). On my system I recently switched from GNOME 3.16 to GNOME 3.26, and at the same time was switching between 2 very different Radeon cards and both had this very same problem but only on GNOME 3.26. At first I thought this was some Wayland problem, but I tried running GNOME 3.26 with Xorg11 and the option was still missing. Seems to be a limitation either of GNOME 3.26 or how it is configured for Debian 9 and its derivatives – ossbuntu Feb 17 '18 at 15:30

Seems to have been a mistake in the GUI design of GNOME 3.26

Luckily there's an extension on the way that fixes this: https://extensions.gnome.org/extension/897/turn-off-display/

  • Switched to KDE. Can't test that ATM. – nerdoc Feb 18 '18 at 19:13

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