[ubuntu] Unity won't launch after 12.10 installation

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http://ubuntuforums.org – Hi, After a new installation of 12.10 on a Lenovo x120e and a restart the Unity shell won't launch. Installation of 12.10 amd64 yesterday went well. I turned the computer off for the night and when I turned it on this morning I was presented with the login screen. When I enter the password the screen flashes black and returns to the login screen. I'm using the right password because if I enter an incorrect one a message in red font tells me so and the login screen remains. If I choose guest access the computer brings me to the desktop but without the unity shell. A right click wil (Hardware)