NVIDIA© Optimus(TM) technology intelligently optimizes your notebook PC, providing the outstanding graphics performance you need, when you need it, all the while extending battery life for longer enjoyment.
This applet provides means to display the active GPU and lets you switch between the Intel and Nvidia GPUs on NVIDIA Optimus equipped computers.
Install mate-optimus on ubuntu 9.04/9.10
Open the terminal and run the following command
sudo apt-get install mate-optimus
After installation application only shows if you have NVIDIA Optimus graphics card on your system.