Ok, valid numbers are between 0 and 255. Try setting e.g. the speed with
sudo su echo 150 > /sys/devices/platform/i8042/serio1/serio2/speedSimilarly you can echo to /sys/devices/platform/i8042/serio1/serio2/sensitivity
Once you figure out suitable numbers, you can add the echo commands to /etc/rc.local to be automatically run at startup.
