no boot graphically, kdm problem?

using suse 11.3 and kde 4.5
after an updating happen that runlevel 5 is skipped and suse dont start x
I think is a kdm problem, becouse if I change kdm in gdm in /etc/sysconfig/displaymanager it starts and show me the login window, (but system don’t work well)

if I do startx this is the error:

xauth:  creating new authority file /root/.serverauth.3664


X.Org X Server 1.8.0
Release Date: 2010-04-02
X Protocol Version 11, Revision 0
Build Operating System: openSUSE SUSE LINUX
Current Operating System: Linux linux-7yra.site 2.6.34.7-0.3-desktop #1 SMP PREEMPT 2010-09-20 15:27:38 +0200 x86_64
Kernel command line: root=/dev/disk/by-id/ata-SAMSUNG_HM500JI_S1WFJ90Z506500-part5 resume=/dev/disk/by-id/ata-SAMSUNG_HM500JI_S1WFJ90Z506500-part3 splash=silent quiet vga=0x314
Build Date: 19 August 2010  03:34:22PM
 
Current version of pixman: 0.18.0
    Before reporting problems, check http://wiki.x.org
    to make sure that you have the latest version.
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: Fri Sep 24 19:18:03 2010
(==) Using config directory: "/etc/X11/xorg.conf.d"
(EE) No input driver/identifier specified (ignoring)
(EE) No input driver/identifier specified (ignoring)
(EE) No input driver/identifier specified (ignoring)
(EE) No input driver/identifier specified (ignoring)
(EE) No input driver/identifier specified (ignoring)
(EE) No input driver/identifier specified (ignoring)
(EE) No input driver/identifier specified (ignoring)
(EE) No input driver/identifier specified (ignoring)
/etc/X11/xim: Checking whether an input method should be started.
sourcing /etc/sysconfig/language to get the value of INPUT_METHOD
INPUT_METHOD is not set or empty (no user selected input method).
Trying to start a default input method for the locale it_IT.UTF-8 ...
There is no default input method for the current locale.
Dummy input method "none" (do not use any fancy input method by default)
/usr/bin/kde4-config: symbol lookup error: /usr/lib64/libkdecore.so.5: undefined symbol: _ZN9QListData11detach_growEPii
/usr/bin/kde4-migrate: symbol lookup error: /usr/bin/kde4-migrate: undefined symbol: _ZN9QListData11detach_growEPii
kdostartupconfig4: symbol lookup error: /usr/lib64/libkdecore.so.5: undefined symbol: _ZN9QListData11detach_growEPii

waiting for X server to shut down .


How can I come back to a working kdm using only “non graphic environment”??

What video card and drivers? after a kernel update you may need to reinstall the video driver.

Exact instructions depend on the answers above