My laptop cannot boot up after I upgrade ubuntu 12.04. The error message is unsupported number of auguments (3) back to default xsession
Anyone have solution to this problem?
That looks more that your xserver is not starting instead of your whole server. Isn't it?
Do you get a shell? What do you see on your screen?
to reconfigure your xserver.
Have a look in your logfiles
for any hints what exactly is going wrong.