Search notes:

Display manager [X]

A display manager is the first X program run if the system (as opposed to a user) starts X.
The display managers lets a user log in.

Implementations

GDM (Gnome), KDM (deprecated), Xdm, LightDM, LXDM, SLiM (Simple Login Manager), SDDM, qingy etc.

Login manager

Login manager is a synonym for display manager.

See also

/etc/X11/default-display-manager
/etc/systemd/system/display-manager.service
/usr/share/xsessions
Display the name and status of the active display manager service: 
systemctl status display-manager
X

Index