MSI GT72S-G220

Graphics
See NVidia or nouveau. Also, Xorg/Hardware_3D_acceleration_guide.

For the most part, the following should be sufficient to get 3D acceleration working:

Touchpad
See Synaptics.

make.conf
It is recommended to add or replace the following lines in make.conf

External resources

 * Forum post.
 * User made kernel configs.