Is there a possibility to configure the monitor configuration of Mutter/GNOME shell from command line in a Wayland Session or is that not implemented until now?
I have tried to change some things via the xrandr command (but it seems obvious to me, that this can not work as the "x" in xrandr indictates that it is a tool for the XServer).
This command has no effect (using Fedora 23 / GNOME 3.18.2)
xrandr --output XWAYLAND0 --off
However the included gnome settings dialog for the display configuration is working. A hint to a configuration file or a command line tool would be nice...