I have been using 12.04 for a month or so now and everythings been okay (apart from randomly freezing every now and then requiring a complete shutdown. But that's an issue for another thread ).

However I ran update manager last night and when I logged in this morning I found that my touchpad doesn't work. I tried to plug a mouse in and that doesn't work either.

The touchpad is unresponsive on the login screen as well.

I tried "synclient TouchpadOff =0" to no effect.

I then tried sudo dpkg -C just in case there was a package issue, nothing happened.

I then tried uninstalling and reinstalling xserver-xorg-input-synaptics.

Finally I tried to do "modprobe -r psmouse" and "modprobe psmouse proto=imps". However the thread that suggested to try this said to use root, and I can't remember my root password so I can't su .

Any help would be appreciated.