I have a fresh installed Ubuntu 12.04 LTS on my HP ProBook.
My external mouse and touchpad freeze in battery mode, but I can reinitialize them with Ctrl+Alt+1 and back to 7. As long as I move the mouse everything is fine. But not touching the mouse for one second will freeze it.
I could solve the problem for my touchpad putting these two lines into
sudo modprobe -r psmouse sudo modprobe psmouse proto=imps
But I have no solution for my external wired mouse. How to fix it?