Table of contents 1. What is Display manager 2. What is needed to change Display manager 3. What types of display managers are there? 4. How to Find Out Which Display Manager is Used on Linux 4.1 Display-manager.service status 4.2 Symbolic link /etc/systemd/system/display-manager.service 5. How to change Display Manager 6. How to install the new Display Manager on Debian, Ubuntu,...