Comment 25 for bug 1016147

For all those still looking, I have an Acer Aspire v3 771g and this package: psmouse-alps-dst-0.4.tbz , works perfectly, here are installation instructions:

Extract psmouse-alps-dst-0.4 in /usr/src/ with sudo rights.
If you have installed the module before, I suggest you to completely remove it before reinstalling with:
sudo dkms remove psmouse/alps-dst-0.4 --all
(of course, if you have installed another version of the module, change version number accordingly)
Then just give those commands in the terminal:
sudo dkms build psmouse/alps-dst-0.4
sudo dkms install psmouse/alps-dst-0.4
sudo rmmod psmouse && sudo modprobe -v psmouse
After that your touchpad will be hopefully recognized by your machine.

Courtesy of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/606238 comment number 212