I installed Ubuntu 12.04 on my alienware m11x, which has both integrated and discrete graphics. I also installed gnome-shell, but upon login it defaults to fallback mode. I'm pretty sure this is an issue with the graphics drivers.
However, there are no graphics drivers listed in the 'additional drivers' so I'm not sure what drivers I need. I know even the discrete graphics are capable of running gnome shell (I had linux mint previously installed and it ran gnome shell fine), its just a matter of installing the right drivers. Are there some drivers I can install from the command line? I also found this page: http://intellinuxgraphics.org/ but I have no idea what I need.
Any help would be awesome.