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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.

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Try to install package mesa-utils sudo apt-get install mesa-utils – LnxSlck Sep 11 '12 at 22:02

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