My laptop has a synaptic touchpad and its horizontal scroll was not working ever since I moved to Ubuntu. I didn’t pay attention to it in the beginning as it was not much of a use. But later on it started bugging me so I finally decided to resolve this problem.
Well, installing gsynaptics and enabling the horizontal scroll didn’t work for me but that may work for you. So try this:
In terminal, type:
sudo apt-get install gsynaptics
Type in your password and let it install the package. After installation, go to System->Preferences->Touchpad.
Go to scrolling tab and enable Horizontal scrolling. This may work for you, but it didn’t work for me.
If this doesn’t work for you too, try this:
In terminal, type:
synclient HorizEdgeScroll=1
That should do the trick. I hope it helps. This worked for me.
Cheers!
Comments are more than welcome.