trouble getting x11 xdm to work

[Fbsd1]

logging in at command line works and startx works. Now want to use x11 
xdm to control logins for virtual terminals 9+

Followed handbook instructions 5.6.2 Using XDM doing this
ttyv8   "/usr/local/bin/xdm -nodaemon"  xterm   on secure

Then kill -HUP 1 to reread the file.

Also created the .xsessions file in the users home directory.

Keep getting this console error message hundreds of times

init: getty repeating too quickly on port /dev/ttyv8, sleeping 30 second