Comment 3 for bug 1000029

I'm having the same issue on my Dell Inspiron 1501 laptop.

With a fresh install of Ubuntu 12.04 I had problems with the touch pad right away. If you tried moving the cursor it would scroll horizontally a bit but not vertically and would activate the right click on the touch pad without touching it. The problem would manifest itself when the laptop would resume from hibernate.

I installed the system updates on 07/11/2012 and this problem appears to have been resolved as far as recovering from hibernate but now it happens when I plug the power cable into the laptop.