`org.gnome.desktop.peripherals.touchpad` become no effect on next boot.
In order to reduce the side effects of touchpad. I firstly set org.gnome.desktop.peripherals.touchpad disable-while-typing true
. It become no effect on the next boot.
Then I set org.gnome.desktop.peripherals.touchpad send-events 'disabled-on-external-mouse'
. It also become no effect on next boot.