I'm new to Ubuntu, I'm running 12.04 64 Bit on a Dell XPS L207x with a Nvidia GT555M card.
From what I could understand online I needed to install Bumblebee to get the most out of the Optimus system and better battery life.
I can test the Bumblebee is working by running
optirun glxgears for example. If I run just
glxgears then I get the following error
Error: couldn't get an RGB, Double-buffered visual.
I'm also unable to run Unity 3d, which I would very much like. I'd greatly appreciate any and all help, please be gentle.