Thanks for the gdm logs. It seems gdm has some difficulties with ConsoleKit, but I'm afraid I need more details, at least the ck-list- sessions and ps aux output.
If other people want to provide information, here are instructions how to collect everything interesting: * Open a Terminal and do echo 'rm -r /var/log/gdm/* /var/log/Xorg*' | sudo -s * reboot * log in as one user * attempt to switch user You should now be on a black screen, as reported. Press Control-Alt+F1, log into the text console, and do ps aux > /tmp/ps.txt who > /tmp/who.txt ck-list-sessions > /tmp/ck.txt 2>&1 sudo tar czvf ~/logs.tar.gz /var/log/gdm /var/log/Xorg* /var/log/kern.log /tmp/ps.txt /tmp/who.txt /tmp/ck.txt The press Control-Alt-F7 or Control-Alt-F8 to get back to your original session (if neither works, just restart the computer with Control-Alt- Delete), and attach logs.tar.gz here. Thanks! ** Changed in: gdm (Ubuntu) Status: New => Incomplete -- user switch crashes with process termination (lucid alpha) https://bugs.launchpad.net/bugs/529882 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs