cat /var/log/kdm.log

Server terminated successfully (0). Closing log file.
kdmgreet(23378) KdmPixmap::definePixmap: Cannot find wallpaper "Horos"
klauncher(23384) kdemain: No DBUS session-bus found. Check if you have started the DBUS server.
kdeinit4: Communication error with launcher. Exiting!
kdmgreet(23378)/kdecore (K*TimeZone*): KSystemTimeZones: ktimezoned initialize() D-Bus call failed:  "Not connected to D-Bus server"
kdmgreet(23378)/kdecore (K*TimeZone*): No time zone information obtained from ktimezoned