Get xinput_calibrator
The generic calibration tool xinput_calibrator is a program for calibrating your touchscreen, when using the X Window System.
Install xinput_calibrator:
____ sudo apt-get install xinput_calibrator
Use calibrate tool
Connect one (if multiple) touch screen and on the command line, run:
____ xinput_calibrator
The UI screen will show an x at each point of the screen. Click the x at each red point to create a calibration. Once a valid calibration is created, the tool will prompt you to save the set up to a specific config file.
If multiple monitors are being used, the calibration needs to be mapped correctly.
