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