If the login screen is not properly set, it may actually help to copy a working monitors.xml to /etc/gnome-settings-daemon/xrandr. If Windows drag ghost pictures, gnome-settings-daemon was still started to early. For my setup it helped to increase the waiting time to 6 seconds.
If the login screen is not properly set, it may actually help to copy a working monitors.xml to /etc/gnome- settings- daemon/ xrandr. If Windows drag ghost pictures, gnome-settings- daemon was still started to early. For my setup it helped to increase the waiting time to 6 seconds.