yes thanks, pressing Alt-F7 helped. The *.log files contains following kdm line for the boot time:
daemon.log:Oct 2 13:31:42 XY kdm_greet[3806]: Can't open default user face -- edgy eft usplash does not switch to kdm https://launchpad.net/bugs/63541 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
