Not really a thing in Linux for some reason.
I like using it for any system, especially the one hooked up to my TV/stereo, if the youtube album, whatever I’m playing is a still image, it’s gunna burn into the screen.
Maybe another way, but this is how I got it to work.
Go to screen locking, set time, uncheck Lock, no password.
Top right click on Configure, slideshow, random, select image/s.
Personally, I like Matrix, downloaded 1920x1080 gif, added it to the wallpaper folder, selected (tick) it only.