[gdm-list] How to set GDM to don't continue on TTY1?

[Farhad Mohammadi Majd <farhadbenyamin yahoo com>]

In following previous thread, I need to know how to set GDM to don't
continue on TTY1? because in this situation it uses a lot of RAM and
CPU for something which is useless for most people, my system is old
and weak, it need to be optimize.

THANKS FOR HELP :)