I am Using an Elotouch 1529l with an RPi as a Kids-Computer. the touch screen worked Out of the Box. (evdev Module) unfortunately the Y-Axis was swapped and the calibration way off. I followed [these][] instructions (Ubuntu Forum). In short Edit */usr/share/X11/xorg.conf.d/10-evdev.conf* adding Option "InvertY" "true" Then run *sudo evtest /dev/input/eventX* Write down the min/max of x/y Option "Calibration" "486 3553 602 3490"