I am using Ubuntu 12.04 x86_64 with a Cinnamon desktop.
Today, out of the sudden, I was kicked from desktop to login screen. I entered my password and noticed that my window decorations disappeared. I ran:
sudo aptitude reinstall cinnamon
After that I wasn't even able to login (black screen and back to login screen). After research I managed to resolve the login issue by removing my
Althought I can log to default Ubuntu (Unity) session, I can't do this with all other window managers - Cinnamon and Gnome. Furthermore, any login attempt to mentioned sessions re-initiate the login issue for all sessions.
Any help would be appreciated.