Get Touchscreen eGalaxy Touch working

@Jin, in case this helps, something to double check is that the X server was successfully started before running the xinput and xinput_calibrator commands. Are you starting the X server with startx or some other similar command? In another thread (link below), another user reported their issue was that they were trying to run xinput before startx, rather than the other way around. The following worked for them:

# Start application
startx /usr/src/app/node_modules/electron/dist/electron /usr/src/app --enable-logging
# Wait for X to come up
sleep 3
# Rotate display and touchscreen
xrandr -o right  # this is for screen rotation, probably doesn't apply to you
xinput ...

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