As you say, with a splitter and multiple monitors attached, this is beyond X's autodetection capabilities. It sounds like your request is to have a functionality in the GUI tool for manually specifying settings in this case, so I'm reassigning to the GUI tool.
** Changed in: gnome-control-center (Ubuntu) Sourcepackagename: xorg => gnome-control-center -- Unable to force screen resolution with vtswitch/splitter https://bugs.launchpad.net/bugs/260436 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