Comment 31 for bug 565543

It looks like this bug has changed over time; the touchpad does indeed seem to be being misdetected by the kernel now - it wasn't in the initial report, which was being correctly picked up by the synaptics X input driver.

That means that this will actually be two separate bugs. Let's first deal with the kernel one, which will be masking what appears to be a second one in the synaptics driver.

The device started to be identified as a Generic Wheel Mouse after an update - could anyone identify which update it was? That will make it much easier to work out what's happened. If you go to the Ubuntu Software Centre you should be able to select “History” and get a list of when all the upgrades were.