How to Install and Autostart XScreenSaver on Ubuntu 16.04.
Install XScreenSaver from Ubuntu Repository or PPA Install xscreensaver from Ubuntu repository with:
#sudo apt install xscreensaver
To install the latest version, you can use the following PPA.
#sudo add-apt-repository ppa:hda-me/xscreensaver
#sudo apt update #sudo apt install xscreensaver
To check your XScreenSaver version, execute the following command:
#xscreensaver --help