Translations:Manjaro-ARM/31/en
From Manjaro
If you have trouble using the power button on your Pi 400 with the XFCE desktop (or xfce4-power-manager) then make sure logind is handling button events:
xfconf-query -c xfce4-power-manager -p /xfce4-power-manager/logind-handle-power-key -n -t bool -s true