I just upgraded to version 11.10 and found how to enable xscreensaver. However, I'm very disappointed that I don't have the option to use my photos directory as a screen saver option.
What do I have to do to use a photos directory as my screensaver?
sudo apt-get install xscreensaver xscreensaver-data-extra xscreensaver-gl-extra
to get xscreensaver with GLSlidershow on Ubuntu 18.04 – Martin Eden May 16 '19 at 22:39