xrh0905@RPi3B:~/twofing $ DISPLAY=:0 ./twofing --debug
twofing, the two-fingered daemon
Version 0.1.6.20230112
Input device name: "wch Touch"
XInput device id is 8.
XInput device id for calibration is 8.
Start calibration
No calibration data found, use default values.
Calibration: MinX: 0; MaxX: 4096; MinY: 0; MaxY: 4096
Invert X Axis: No
Invert Y Axis: No
Swap Axes: No
Calibration Matrix: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
Grab Result: 0
Reading input from device ... (interrupt to exit)
X Error of failed request: BadWindow (invalid Window parameter)
Major opcode of failed request: 20 (X_GetProperty)
Resource id in failed request: 0x1
Serial number of failed request: 43
Current serial number in output stream: 43
