Install sddm by entering the following commands in the terminal:
sudo apt update sudo apt install sddm
Description:
modern display manager for X11
SDDM is a modern display manager for X11 aiming to be fast, simple and beautiful. It uses modern technologies like QtQuick to create smooth, animated user interfaces.
Homepage: https://github.com/sddm/sddm
Version: 0.17.0-1ubuntu7
Section: universe/kde