After trying the Xfce-session, the Xubuntu-session won't come up. I can select Xubuntu-session, but after login it is still the Xfce-session. This remains after several reboots.
I solved it for me to go to TTY with Ctrl+Alt+F1, and renamed .config/xfce4 in .config/xfce4.old and after reboot
everything Xfce was back to Xubuntu 11.10 defaults
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: lightdm 1.0.1-0ubuntu6
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
ApportVersion: 1.23-0ubuntu3
Architecture: i386
Date: Fri Oct 28 21:36:58 2011
InstallationMedia: Xubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
ProcEnviron:
PATH=(custom, no user)
LANG=nl_NL.UTF-8
SHELL=/bin/bash
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
WORKAROUND:
Switch to a TTY, using Ctrl+Alt+F2
Login using username and password
type in the TTY:
rm ~/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-session.xml
hit enter
type in the TTY:
rm -r ~/.cache/sessions
hit enter
The next command restarts the computer. We do not want to go back to the desktop, or you will need to do this process again.
now type:
sudo shutdown -r now
hit enter
This is going to resart your computer and reset the sessions so you can choose "Xubuntu" at login.
Thanks for reporting this bug and any supporting documentation. Since this bug has enough information provided for a developer to begin work, I'm going to mark it as confirmed and let them handle it from here. Thanks for taking the time to make Ubuntu better!