Power saving enables touchpad

I've installed power saving packages (bumblebee, laptop-mode-tools, and cpufreq) to my laptop with Debian Wheezy. Thanks to that I decrease power usage from 32W to 10W. But now I faced the issue that I can't disable touchpad. I wrote simple script that inverts state of touch-pad: #!/bin/sh synclient TouchpadOff=synclient | grep TouchpadOff | awk '{print !$3}' When I launch this script, it inverts state of touch-pad as expected, but in 5 seconds TouchpadOff is rewritten with value "2", and touch-pad becomes active again. I suppose that it's laptop-mode-tools who modifies TouchpadOff variable. I tried to find related settings in laptop-mode-tools, but didn't find anything. Any ideas how to determine who modifies TouchpadOff variable and how to disable such a modification?