Ubuntu 10.04 scroll broken

go to terminal

$ sudo rmmod psmouse
$ sudo modprobe psmouse proto=imps

if proto=imps doesnt work, try proto=exps
try the touchpad again for scrolling..
if it works, u need to make it permanent.

$ sudo vim /etc/modprobe.d/options

options psmouse proto=imps

reboot PC.

credits here (http://ubuntuforums.org/showpost.php?p=9207727&postcount=2)

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