btw, if you get something cool working for you, please pull request your changes. i might not add them to master since i cannot test it in any way (i ONLY have xperias), but others might benefit from it, and i might buy an fxtec soon myself
action=cmd(echo 1 > /sys/class/leds/keyboard-backlight/brightness),kb,always
[qw(10 KBD_STATE kb)],