I have an Acer TravelMate 290, and the behaviour of the ALPS touchpad was strange, too. But not that random behaviour you have. The problem with my touchpad, whas that if I made a schort move of the cursor, it made a click right after the movement. I solved this problem in the following way:
I added the line "options psmouse proto=exps" in the file "/etc/modprobe.d/options/". You can do it wiht the command:
sudo sh -c "echo options psmouse proto=exps > /etc/modprobe.d/options"
I have no idea if this would solve your problems...
I have an Acer TravelMate 290, and the behaviour of the ALPS touchpad was strange, too. But not that random behaviour you have. The problem with my touchpad, whas that if I made a schort move of the cursor, it made a click right after the movement. I solved this problem in the following way: d/options/ ". You can do it wiht the command: d/options"
I added the line "options psmouse proto=exps" in the file "/etc/modprobe.
sudo sh -c "echo options psmouse proto=exps > /etc/modprobe.
I have no idea if this would solve your problems...