Comment 7 for bug 196902

Well, it looks like a touchpad problem. I can't tell if the touchpad has crapped out, or gotten wet--any spilled drinks? Sometimes the ribbon cable to the touchpad gets loose.

Grab yourself a USB mouse and plug that in and see if you can regain control. Try turning off the touchpad in BIOS.

It's possible that the real-time kernel is not happy with the touchpad driver. This would be a bug.

A work-around is to try a regular kernel version of Ubuntu. You want something that says x686 or generic. Is there a reason you need real-time on a laptop?

You can select a different mouse driver in /etc/X11/xorg.conf.