In edubuntu-live, this is called:
"""
echo "[SeatDefaults]" > /target/etc/lightdm/lightdm.conf.d/90-edubuntu.conf
echo "user-session=gnome-fallback" >> /target/etc/lightdm/lightdm.conf.d/90-edubuntu.conf
"""
It seems that /etc/lightdm/lightdm.conf.d/ is no longer created anymore by the newest LightDM.
In edubuntu-live, this is called: etc/lightdm/ lightdm. conf.d/ 90-edubuntu. conf gnome-fallback" >> /target/ etc/lightdm/ lightdm. conf.d/ 90-edubuntu. conf
"""
echo "[SeatDefaults]" > /target/
echo "user-session=
"""
It seems that /etc/lightdm/ lightdm. conf.d/ is no longer created anymore by the newest LightDM.