Public bug reported: Apologies if this is a dupe, I was unable to find a previous version of it.
Steps to reproduce: Install ubuntu-desktop and kubuntu-desktop. Choose kdm as the default login manager. Log in to a Gnome session. Select "Start New Session" from Gnome menu. New session fails to start. However, if you log in to a KDE session, the Switch User/Start New Session works fine, even if you want to log in to Gnome on the second session. There is particularly a problem if someone has started a Gnome session, then gone away and locked the computer. In KDE this isn't a problem as a subsequent user can just start a new session and use their own login. Presumably switching to a terminal via Ctrl-Alt-Fx and launching a new session by hand would work, although I haven't tested it, but that's way beyond the tech level of most of the users of the computer I have where this is a problem. I realise this may well be a problem with Gnome and kdm not working well together, independent of Ubuntu. ** Affects: Ubuntu Importance: Undecided Status: Unconfirmed -- "Start New Session" from Gnome doesn't work when kdm is the default display manager https://launchpad.net/bugs/95167 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs