October 04, 2012, 5:13 PM — Here's how you can install and use XScreensaver in Ubuntu Linux.
1. Open a terminal window.
2. Type in the following commands, then hit Enter after each.
sudo apt-get remove gnome-screensaver
sudo apt-get install xscreensaver xscreensaver-gl-extra xscreensaver-data-extra
sudo gedit /etc/xdg/autostart/screensaver.desktop
3. When GEdit loads, paste in the following text to create a file for autostart.
For more, see the original article at the link below.
Install and enable XScreensaver | Noobslab