Try bumblebee for simultaneously using the intel and nvidia cards:
sudo apt-get install git
# type password
git clone http://
cd bumblebee/
sudo ./install.sh
optirun glxgears
optirun glxspheres
# check the speed and compare to running:
glxgears
glxspheres
# If you have google-chrome installed, you can try it with/without optirun and report the FPS values on the mailing list:
optirun google-chrome http://
If you get stuck at any point, generate a bug report with:
sudo sh ./install-files/bumblebee-bugreport
Create a bugreport on github (URL below) and email mj@casalogic.dk the
bug report file in attachment along with the issue number:
http://github.com/MrMEEE/bumblebee/issues