- open
dconf-editor
- navigate to
org.gnome.desktop.input-sources xkb-options
- add/append to the list (array):
'kpdl:dot'
- Save!
Short way: gsettings set org.gnome.desktop.input-sources xkb-options "['kpdl:dot']"
//gsettings set org.gnome.desktop.input-sources xkb-options "['kpdl:comma']"