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1 year agoThe program responsible for logging in and starting your window manager is called the display manager. Sddm is the default for KDE and GDM is the default for Gnome.
Technically, you don’t even need a display manager as you could login and start the window manager manually directly from the TTY. That’s just mainly useful for when you break something in your display manager config though.
I personally just use
tldrto figure out how it’s done.