Fabrice Pigou

Dans un terminal (ctrl+alt+t)

Activer la touche Verr Num au démarrage

sudo -i

xhost +SI:localuser:gdm

su gdm -s /bin/bash

UBUNTU 18.04
gsettings set org.gnome.settings-daemon.peripherals.keyboard numlock-state 'on'

UBUNTU 20.4
gsettings set org.gnome.desktop.peripherals.keyboard numlock-state true

Activer le clic en tapant sur un touchpad d'un ordi portable
gsettings set org.gnome.desktop.peripherals.touchpad tap-to-click true

Redémarer