My Ubuntu 11.10 installation worked real good for two weeks. After the first few ubuntu updates (I am not sure if this is the cause) I am not able to use Unity! When I login to Ubuntu 2D, I get the following error:
Failed to load session "Ubuntu-2d"
The only option in this popup is a logout button. Hence, I am not able to use unity. When I try to login to unity, at times it work.. but launcher and panel does not start. I have to press Ctrl+Alt+T to get a terminal and start the launcher manually!
How do I solve these problems? I did reach but I am not able to see others facing this issue. I also do not know the location of logs, Please let me know where to look for and I will update this question with more information.
Thanks for the help.
ps: Currently I use the Gnome-shell with no problem. I am also able to login to gnome classic.