Install ukui-screensaver by entering the following commands in the terminal:
sudo apt update sudo apt install ukui-screensaver
Description:
UKUI screen saver and locker
ukui-screensaver is a screen saver and locker that aims to have simple, sane and secure defaults, and be well integrated with the UKUI desktop. . It is designed to support, among other things: . * the ability to lock down configuration settings * translation into other languages * user switching
Homepage: http://www.ukui.org/
Version: 1.1.2-0ubuntu1
Section: universe/x11