Dê uma olhada na seção "bumblebee" no link
b) try bumblebee for simultaneously using the intel and nvidia cards: sudo apt-get install git # type password git clone http://github.com/MrMEEE/bumblebee.git cd bumblebee/ sudo ./install.sh optirun glxgears # check the speed and compare to running: glxgears # 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://webglsamples.googlecode.com/hg/aquarium/aquarium.html