touchpad keys still work after disabling the touchpad

[Michael Kuster]

the touchpad couldn't be disabled completely, the touchpad key's still work

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-control-center 1:3.28.2-0ubuntu0.18.04.1
ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
Uname: Linux 4.15.0-29-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Jul 26 09:31:16 2018
ExecutablePath: /usr/bin/gnome-control-center
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastien Bacher (seb128)]

Thank you for your bug report. What laptop/touchpad model do you use? What buttons are you talking about exactly?

[Michael Kuster (user240)]

xinput --list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ ETPS/2 Elantech Touchpad id=13 [slave pointer (2)]

The touchpad has 2 Buttons, right and left mouse buttons. This buttons aren't disabled, when I disable the touchpad in the gnome-control-center.

If I install the gnome-shell-extension "Touchpad indicator" and set the "switching methode" to Xinput, the buttons will be disabled. But if I use the "switching methode" Synclient or "Gconf Settings" the buttons still works after disabling the touchpad.

With "Touchpad indicator" with the setting "Auto Switch" enabled and "switching methode" Xinput all works as expected. If I unplug the mouse, the touchpad will be activated and vice versa.