I have a test machine
Starting Xwindows server without access control (-ac) after server booting is my goal.

Which file should I modify ?

ENV
--------
sybaseiq:/etc/X11/xdm # cat /etc/*releas*
SUSE Linux Enterprise Server 11 (x86_64)
VERSION = 11
PATCHLEVEL = 4


/etc/X11/xdm # ps -ef|grep X
root 3238 3237 0 16:04 tty7 00:00:01 /usr/bin/X :0 -br -verbose -auth /var/run/gdm/auth-for-gdm-zRw21w/database vt7 #### NOW
root 3238 3237 0 16:04 tty7 00:00:01 /usr/bin/X :0 -ac #### What I want