NOTE: This guide assumes that your bios version is 211 or higher. If you haven’t already done it, download the update from here.
If you’re on Ubuntu 12.04 / 12.10, see here.
1) Install bumblebee. If you previously installed nVidia drivers… remove ‘em completely before performing this step!
$ sudo add-apt-repository ppa:bumblebee/stable
$ sudo apt-get purge nvidia-current
$ sudo apt-get update
$ sudo apt-get install bumblebee bumblebee-nvidia