xinput_calibrator -v
DEBUG: XInputExtension version is 2.3
DEBUG: Skipping virtual master devices and devices without axis valuators.
DEBUG: Skipping device 'Virtual core XTEST pointer' id=4, does not report Absolute events.
DEBUG: Selected device: ft5x0x_ts
DEBUG: Not usbtouchscreen calibrator: Not a usbtouchscreen device
DEBUG: Read axes swap value of 0.
DEBUG: Read InvertX=0, InvertY=0.
Calibrating EVDEV driver for "ft5x0x_ts" id=6
	current calibration values (from XInput): min_x=0, max_x=0 and min_y=0, max_y=0
DEBUG: Found that 'ft5x0x_ts' is a sysfs name.
INFO: width=800, height=480
DEBUG: Adding click 0 (X=0, Y=0)