Am Sonntag, 10. April 2011 schrieb HHa:
> Hallo Werner,
>
> > if you cannot configure these things in controlcenter->login manager
> > then you're missing something in your trinity installation or it is some
> > other login manager from mint (xdm ?)
>
> as I wrote yesterday when I started this thread, there is only kdm-trinity
> installed.
> Is there a way to test kdm? sudo kdm  doesn't do anything.

Go to a text console: 
	<ctrl/strg>+<alt>+<f1>

login, open root shell: 
$ sudo bash

look where X is running:
# ps ax|grep X
 1328 tty7     Ss+    0:42 /usr/bin/X -br -nolisten tcp :0 
vt7 -auth /var/run/xauth/A:0-zF79Xa

first column is process id - later referenced als <pid of X>, second is the 
terminal where X is running. in my case, I could go back to X by pressing 
alt>+<f7> as it's running on tty7.

look, which login manager is running:

# ps ax|grep dm
 1320 ?        Ss     0:00 /opt/trinity/bin/kdm
 3739 pts/1    S+     0:00 grep --color=auto dm

in my case, kdm from trinity.

Now kill kdm: 
# /etc/init.d/kdm-trinity stop

make sure X is gone:
# kill -9 <pid of X>

restart kdm:
# /etc/init.d/kdm-trinity start