Ubuntu Karmic Koala (9.10 Beta) Buggy Touchpad Behavior
17 Oct 09 by Danilo
I recently upgraded my Dell Precision M90 Laptop to Ubuntu Karmic Koala. I’m running it standalone, no Windows anywhere. When I upgraded using “apt-get upgrade” my touchpad didn’t work. Nothing. The touchpad was completely disabled. I assume that this is a problem on M70’s, ect.
Found a fix after searching for two days — in case you’re having the same problem, here it is.
Open a terminal (if you don’t have a mouse hooked up, use Alt+F2). then “su” and give the root password (I tried doing this with sudo and still didn’t have enough permission. I “think” you need to be root). At the prompt, type:
echo options psmouse proto=exps > /etc/modprobe.d/psmouse.modprobe
At the next prompt, type”
Your touchpad will come back up after rebooting.