Comment 30 for bug 1715479

well, that's me out of ideas then. libinput driver is being used, I don't know why gnome wouldn't show the touchpad configuration. GNOME *does* disable the touchpad, see libinput Send Events Mode Enabled (260): 1, 0 which indicates that at least mutter is aware of the libinput driver.

With the property set, libinput *should* ignore the touchpad events, I don't know why it doesn't. And we don't have any other debugging tools yet for that specific use-case. Sorry, I really don't know how to debug this further remotely.