Peter Lemken <ibm-thinkpad@bloatware.de> wrote: > Howdy, > > I - like many others - have the high-pitch noise phenomenon when running on > battery. > > rmmod uhci_hcd completely solves the problem - but since my mouse is a USB 1.1 > device, I am left without a mouse. Perhaps you might want to give CONFIG_HZ_100=y a try. Hope that helps, Elias