Default [Q] CM 10.2: disable touchpad and power button

Hello, with CM10.2 and data2sd enabled kernel this tablet is finally what it should've been since it came from the factory! So far two things: power button and screen lock buttons stop workin after some time after rebooting the tablet. It takes < 1 hour to happen but it works for some time after booting up. And then there is this button that should disable touch pad which does not work at all. Some ideas, please?