Here is the xinput list-props while the second screen (AOC) is disconnected
Here the touch works as expected
xinput list-props 11
Device 'Weida Hi-Tech CoolTouch® System':
Device Enabled (169): 1
Coordinate Transformation Matrix (171): 0.500000, 0.000000, 0.500000,
0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
libinput Calibration Matrix (308): 1.000000, 0.000000, 0.000000,
0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
libinput Calibration Matrix Default (309): 1.000000, 0.000000,
0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
libinput Send Events Modes Available (291): 1, 0
libinput Send Events Mode Enabled (292): 0, 0
libinput Send Events Mode Enabled Default (293): 0, 0
Device Node (294): "/dev/input/event4"
Device Product ID (295): 9589, 49920
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https://bugs.launchpad.net/bugs/1287341
Title:
Touchscreen controls both screens in dual-monitor setup
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