1) Create file
/etc/dconf/profile/gdm with lines:
2) Create file /etc/dconf/db/gdm.d/00-login-screen with lines:
3) Run 'dconf update'
4) Run '/etc/rc.d/gdm restart'
I don't understand the dconf magic, but works for me.
Server run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!