у меня работает, но можно просто вручную конфиг подправить /usr/share/kde4/config/kdm/kdmrc
А вообще глянь `which kdm` взомжно он юзает кдм от третьих кед, у мея тако было
/usr/share/kde4/apps/kdm/read_sysconfig.sh: line 75: pam-config: command not found
X.Org X Server 1.5.2
Release Date: 10 October 2008
X Protocol Version 11, Revision 0
Build Operating System: openSUSE SUSE LINUX
Current Operating System: Linux linux-z3zd 2.6.27.7-9-default #1 SMP 2008-12-04 18:10:04 +0100 x86_64
Build Date: 03 December 2008 02:40:38PM
Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
Module Loader present
Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Sat Jan 24 16:51:08 2009
(==) Using config file: "/etc/X11/xorg.conf"
Could not init font path element /usr/share/fonts/TTF/, removing from list!
Could not init font path element /usr/share/fonts/OTF, removing from list!
Driver not XRANDR 1.2 capable, ignoring DISPLAYMANAGER_RANDR_MODE_* settings
QProcess: Destroyed while process is still running.