Install ukui-screensaver-common by entering the following commands in the terminal:
sudo apt update sudo apt install ukui-screensaver-common
Description:
UKUI screen saver and locker (common files)
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. . This package contains the architecture independent files.
Homepage: http://www.ukui.org/
Version: 1.1.2-0ubuntu1
Section: universe/x11