How to change the default display manager in Ubuntu 20.04

This quick tutorial shows how to change the default login screen display manager (gdm3, lightdm, kdm, etc.) on Ubuntu 20.04.

Ubuntu 20.04 Gnome desktop uses GDM3 as the default display manager. If you have other desktop environments installed on your system, your display manager may be different.

To change the default display manager, open a terminal from the System Application Launcher and do the following steps one by one.

1.) Run the following command to see which display manager is currently running.

systemctl status display-manager.service

How to change the default display manager in Ubuntu 20.04

You can also run cat /etc/X11/default-display-manager To get results.

2. Run the command to reconfigure the default manager.

sudo dpkg-reconfigure gdm3

Note: Replace the command gdm3 with the one obtained in step 1).

How to change the default display manager in Ubuntu 20.04

3.) If you have multiple display managers installed, the package configuration screen will appear.

How to change the default display manager in Ubuntu 20.04

4.) Press Enter on the previous screen, then press the up or down arrow keys to toggle the display manager, and then press Enter.

How to change the default display manager in Ubuntu 20.04

The changes will be applied at the next boot. pleasant!

It’s a sequel.

It’s a sequel.
It’s a sequel.

It’s a sequel.
It’s a sequel.

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