I think it's broken because it starts working in the same way when i install their drivers in windows. It's an acer travelmate 6492.

I want to disable it because i think that is broken, however i'm going to write what happens and if someone knows what could be wrong if it's not physically broken, can tell me how to solve it.

Well, the main problem is that is scrolling all down every time so i can't do almost anything.

I've tried to remove xserver-xorg-input-synaptics but it got worse and it was every time pressing enter or something like that so it was very annoying.

Then when i could repair it, i tried with gpointing-device-settings and gsynaptics, but it continued doing the same even with i disabled it from there.

The only thing that seems to have a positive effect is to use x(whatever) option instead of gnome when login in and disabling it with xinput. However, it only lasted some minutes before it started working and i had to disable it again.

Any idea about how can i disable or fix it?

Thanks in advance.