/usr/kde/3/share/config/kdm/Xstartup (from kde 3.0.5a, in case you don't have any kde 3.0.x anymore)

Xstartup (text/plain), 587 bytes, created by Daniel Mettler on 2003-01-09 22:18:25 UTC

#! /bin/sh
# Xstartup - run as root before session starts

PIDFILE=/var/run/kdmdesktop-$DISPLAY.pid
if [ -f $PIDFILE ] ; then
     kill `cat $PIDFILE`
fi

# By convention, both xconsole and xterm -C check that the
# console is owned by the invoking user and is readable before attaching
# the console output.  This way a random user can invoke xterm -C without
# causing serious grief; still, it can cause havoc, so xconsole is started
# by Xsetup usually.
# This is not required if you use PAM with the pam_console module.
#
#chown $USER /dev/console

exec sessreg -a -l $DISPLAY $USER