Instructions

In this file must be changed in the penultimate line of
the driver from "libinput" to "evdev":
Next, the calibration tool can be installed and started
with the following command:
Then restart your Raspberry Pi:
Before your can start the calibration tool, you have to
create the file for the calibration settings (please write
the command in one line !):
Now enter the following settings in this file:
Restart your Raspberry Pi then:
Now you can start the calibration tool with the follow-
ing command (please write the command in one line !):
sudo apt-get install xinput-calibrator
sudo reboot
sudo nano /usr/share/X11/xorg.conf.d/99-calibration.conf
sudo reboot
Section "InputClass"
Identifier "calibration"
MatchProduct "eGalax Inc. USB TouchController"
Option "Calibration" "4094 -35 4026 10"
Option "SwapAxes" "1"
EndSection
xinput_calibrator --device "eGalax Inc. USB TouchController"
Driver "evdev"