If you have attempted to tamper with your screensaver in Ubuntu, you will know that other than selecting the screensaver, there is nothing you can do about it. The default Gnome-Screensaver in your system does not allow you to change any of the screensaver’s setting. If you are looking to make the ball rotate slower, or to get it to display a different line of text, you’ll have no luck there.

On the other hand, the popular XScreenSaver gives you more choices of screensavers and also allows you to change the setting and configure it to your liking.