Touchpad support in Debian on Dell 7720

1. Download the latest driver source code package from here (currently newest package is 1.3): http://www.dahetral.com/public-download

2. Then run these commands:

sudo apt-get install dkms
tar -xf psmouse-alps-dst-X.X.tbz
sudo mv usr/src/psmouse-alps-dst-X.X/ /usr/src/psmouse-alps-dst-X.X/
sudo dkms add psmouse/alps-dst-X.X
sudo dkms autoinstall
sudo rmmod psmouse && sudo modprobe psmouse

Original post: http://forums.debian.net/viewtopic.php?f=16&t=95940#p477034