I can confirm this bug on Kubuntu 11.04 64-bit, upgraded from Kubuntu 10.10.
The proposed untested patch has solved the problem with the warning dialog: ... - default) + default|"") ... I don't know where the empty string session comes from, though, which seems to be the actual problem. My x11-common version is 1:7.6+4ubuntu3. -- 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