My touchpad stopped working on my Acer Travelmate 4740 after I've applied updates through the Update Manager on Precise Pangolin. It is working when on the (LightDM) login screen, but not after logging in. I've tried everything that was suggested in the following threads to no avail:

• https://askubuntu.com/questions/129849/touchpad-not-working-occasionally-in-compaq-presario-cq45




• Keyboard and touch pad is not working on a Dell XPS 15z




• Touchpad stops working after restart on a Compaq Presario CQ-40 324la

Any help would be much appreciated. Thanks.

More Information:

• It is working when I log into LXDE (Installed "lubuntu-desktop"), but not in Unity.