This helps for me: http://forum.kde.org/viewtopic.php?f=66&t=91936
1) Set in /etc/kde4/kdm/kdmrc AutoLoginEnable = false 2) reboot 3) select default session as kde At login you'll get the following message: "Your saved Gnome session isn't valid anymore. Please, choose a new one or the default one will be used" -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/710144 Title: Xsession: unable to launch "" X session --- "" not found; falling back to default session. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp