How exactly do it?
One way to do it is to install xscreensaver.
sudo apt-get install xscreensaver xscreensaver-gl-extra xscreensaver-data-extra
Then Preferences → Screensaver (and accept the first time message if any)
Finally, open Preferences → Default applications for LXSession → Core Applications
and fill the Screensaver text field with:
& how exactly make Screenshot with the software of xscreensaver?
that i click in keyboard on key of printscreen, I don’t see like A pop-up with the Screenshot like in linux mint mate.
So you didn’t mean a screensaver as in…
A screensaver (or screen saver) is a computer program that blanks the screen or fills it with moving images or patterns when the computer is not in use. https://en.wikipedia.org/wiki/Screensaver... but a [url=http://linuxforums.org.uk/index.php?topic=12673.0]screenshot tool[/url] to make screen captures? If so, xscreensaver is not the right tool for that job.
I could have sworn Lubuntu comes with scrot preinstalled
what happens if you hit the PrtScr key … does an image get saved in your home directory ?