[ubuntu] How can I Install/Activate Intel video driver?

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http://ubuntuforums.org – I'm running a Vostro 3460 with Ubuntu 11.10. I made a new fresh install and all the hardware works, except video that falls in VESA instead of Intel. This notebook have a Nvidia Optimus technology with two video boards: one Intel® HD Graphics and the other is GeForce GT630M. I managed to install Bumblebee with success, and through it I can get reasonable FPS, but the main video is running VESA instead of Intel. I made some research but have no idea how to activate the Intel video driver. lspci output: Code: 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core (Hardware)