Use the following code on terminal to enable of disable –

gsettings set org.gnome.desktop.background show-desktop-icons true gsettings set org.gnome.desktop.background show-desktop-icons false
gsettings set org.gnome.nautilus.desktop home-icon-visible true gsettings set org.gnome.nautilus.desktop home-icon-visible false
gsettings set org.gnome.nautilus.desktop trash-icon-visible true gsettings set org.gnome.nautilus.desktop trash-icon-visible false

Written by Al Mahbub Khan Full-Stack Developer & Adobe Certified Magento Developer

Display Home, Computer, Trash icons on Ubuntu Desktop