Hello,
I am missing the Screen Saver List, completely.
If you want to have Screen Saver in the list you have to install a required packages.
I am founding the answer in the searching engine:
Quotesudo apt-get install xscreensaver xscreensaver-gl-extra xscreensaver-data-extra
Quotexscreensaver-demo
I only like these ones, the others make me sick.
(Atlantis, Companion Cube, Discoball, Engine, Eruption, Fiber Lamp, Fireworkx, GL Blur, GL Matrix, GL Text, Lament, Lavalite, Lockward, Maze 3D, Molecule, Pipes, Pyro, XFlame, XMatrix)