What is the difference between GDM and LightDM? How can one switch between them. I mean if I have selected LightDM during installation process, will I be able switch to GDM?
Ubuntu is supposed to officially replace GDM in favor of the lighter and more easily customizable
You can have both of them installed (or add even more, like
The default can be selected by running:
More information on LightDM can be found on the Ubuntu wiki.