I had the very same problem (CRITICAL: gdm_session_direct_get_username: assertion `session != NULL' failed) in syslog, startx works), only the line number in the message was different.
I found that my problem was caused by using autologin. As a workaround I went to administration/user accounts and put the autologin off for my account After that a reboot brought be to the gdm sesssion selection screen. Now I can specify the session to start and gnome classic does work for me (didn't try the others). You might get a message the first reboot that gnome failed or so. Note that my gnome login screen is still on autologin; it is just uer accounts/autologin that I turned off. (btw turning it on again made the problem reappear, I hoped that after setting a proper session things would work, but to no avail; guess it has to be kept off for now). Hope this helps for you guys too. Frans -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/803992 Title: Natty update introduced crasher in xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/803992/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
