The problem might also involve udev, as by these lines:
[ 800.429] (II) event5 - NextWindow Touchscreen: is tagged by udev as: Tablet
[ 800.429] (EE) event5 - NextWindow Touchscreen: libinput bug: missing
tablet capabilities: btn-stylus resolution.Ignoring this device.
[ 800.429] (II) event5 - NextWindow Touchscreen: device is a tablet
[ 800.429] (II) event5 - failed to create input device '/dev/input/event5'.
udev should recognize as TouchScreen, not Tablet.
On previous Xorgs, evdev was used, not libinput.
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Touch Screen stop working on 18.04 beta1
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