Screensaver not working

I really like the blinking tiles screensaver. At first it worked only when the laptop is plugged in, so I thought it was a power management thing, but now I can't get it to work.
I have a Lenovo IdeaPad flex 6-14 running 20.04.

Just a question - how old is the model? I gave a very new Flex 5 and the kernel just doesn't support it. Depending on how old your machine is, it may be the same case.

It's from 2018. The thing is it HAS worked, just not consistently...

have you try Variety ?

Can you elaborate? Is that a package?