Hm. That xorg.conf looks like it should work to me. Could you please attach the /var/log/Xorg.0.log generated when you use it?
I suspect that the Monitors dialog isn't showing other options because Xinerama disables the XRandR extension that is normally used to handle dynamic resolution switching, but the Xorg.0.log would make that more obvious. One configuration option you could try is to just remove all the unwanted resolutions from the xorg.conf - so your Screen section would become: Section "Screen" Identifier "screen1" Device "SiS USB2VGA" DefaultDepth 16 SubSection "Display" Depth 16 Modes "1024x768" EndSubSection SubSection "Display" Depth 8 Modes "1024x768" EndSubSection SubSection "Display" Depth 24 Modes "1024x768" EndSubSection EndSection It might also be worth changing the DefaultDepth to 24 to match the other screen. If these don't work, the Xorg.0.log file generated would be useful to work out why it's not working. ** Changed in: nvidia-graphics-drivers-180 (Ubuntu) Assignee: (unassigned) => Chris Halse Rogers (raof) -- Can't set monitors https://bugs.launchpad.net/bugs/610582 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs