Additionally required options for Mosaic on Linux are not available in the user interface

[rhabacker]

Using Mosaic settings under Linux often requires additional settings in the xconfig file according to https://nvidia.custhelp.com/app/answers/detail/a_id/3580/~/how-to-configure-mosaic-on-linux

Additional options:
Most window managers override the NVIDIA settings so that even though MOSAIC is enabled, the window manager still recognizes separate screens as connected. To correct this behavior, you need to add the following option to the Screen section.

Option "nvidiaXineramaInfo" "FALSE"

In some cases, the "RANDR" extension must be disabled to see a single desktop.

Section "Extensions
Option "Composite" "Disable
EndSection

It would be nice if these additional options could be added via the user interface instead of manually inserting them into the generated x configuration file.