[ubuntu] Touchpad and PS/2 Mouse

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http://ubuntuforums.org – Hello, I have just upgraded to Ubuntu 11.04 (Gateway NV53u Laptop), with no problems except that I have lost the ability to scroll with my touchpad on my laptop. Running xinput list shows that there is a PS/2 Mouse and AlpsPS/2 ALPS Glidepoint. Also, going through the Mouse and Pointer Device options, I see touchpad options, which I can fiddle with, but have no visible change. It seems as though the touchpad is recognized as a PS/2 Mouse, but a touchpad is recognized. Any help would be appreciated. (Hardware)