I still haven't managed to get my touchpad workin although my USB mouse is working fine.
One thing I don't have with the mouse that I did have with the touchpad was pressing both buttons to emulate the middle button and getting a "paste" action.
My mouse does actually have a middle button (a pressable scroll wheel) but pressing this doesn't give me the effect I want either.
Any suggestions?
Check what you have set currently.
gsettings get org.gnome.settings-daemon.peripherals.mouse middle-button-enabled
If this returns false then you can turn this on.
gsettings set org.gnome.settings-daemon.peripherals.mouse middle-button-enabled true
Alan