GNOME Display Manager

GDM (GNOME Display Manager) is an alternate X display manager for the X Window System.

The default display manager for X is XDM, but resolving configuration issues typically involves using the Command line interface. GDM allows users to customize or troubleshoot the settings without having to resort to a command line. Users can pick their session type on a per-login basis. GDM is also easily customizable with Skin (computing)s.