xdm & xearth on root

["Egor Tur" <worldeb@ukr.net>]

Hi.
I canon start xearth with xdm.
I add 
/usr/X11/bin/xearth -root -twopix -ncolors 32 -night 4 -wait 120 &
in  /etc/X11/xdm$ /etc/X11/xdm/Xsetup
but I see only login invitation.
Thanx.