i just bought an asus laptop. I installed Kubuntu 14.10 alongside windows 8.1. When I'm trying to configure it on system settings it's said "Synaptics driver is not installed (or not in use)". With windows the touchpad works fine, with kubuntu the scrolling and other settings don't work. I tried installing Synaptics driver, but it still doesn't work. How can I fix it? Thank you very much.
Here is the repository you'll find the packages mentioned by @TrungTa. This is a more persistent way to share the package than via dropbox. More, we got last updates ;-)
I think your laptop may have a FocalTech touchpad. This happens to me as well as I have an Asus UX303LN.
The reason is that current Linux kernel does not support FocalTech touchpad. You can see more detail here.
Currently, I'm using a patched kernel, which resolve this problem. But hoping the official kernel will be released soon.
I've Kubuntu 15.04. Suddenly touchpad stopped working and I got the same error in system settings. What worked for me is to remove Synaptics driver, install it then restart.