On my x412da the touchpad is detected as 3 input devices:

ELAN1401:00 04F3:30F2 Touchpad
ELAN1401:00 04F3:30F2 Mouse 
ELAN1401:00 04F3:30F2 Keyboard

The first one works as a touchpad. The other two don't.

The keyboard is the device we need to enable the numpad. It has the LED
detected even with the correct trigger: NumLock.

The problem is we don't know what the Windows driver sends to the
touchpad through i2c to enable this mode. We need either to hack the i2c
bus on Windows, or get the information fro Elan people. I am afraid that
they won't provide anything.

If anyone has enough knowledge of Windows to catch the command, I could
start working on support in Linux.

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https://bugs.launchpad.net/bugs/1810183

Title:
  numpad on touchpad doesn't work in ASUS Zenbook 14

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