Provided by: gdm3_3.18.2-1ubuntu2_i386 bug

NAME

       gdm3 - GNOME Display Manager

SYNOPSIS

       gdm3

DESCRIPTION

       gdm3 is the equivalent of xdm(1x) or wdm(1x), but uses the GNOME
       libraries to provide a GNOME look-and-feel. It provides the GNOME
       equivalent of a "login:" prompt.

       gdm3 reads /etc/gdm3/custom.conf for its configuration. For each local
       display, gdm starts an X server and runs a minimal GNOME session
       including a graphical greeter. If configured so, the main gdm process
       also listens for XDMCP requests from remote displays. These requests
       can either be direct, causing gdm3 to start a session on the remote
       display, or indirect, causing a chooser to be opened.

       When managing a display, gdm3 attempts to execute
       /etc/gdm3/Init/display, or /etc/gdm3/Init/Default if that does not
       exist. When a user logs in, gdm3 first attempts
       /etc/gdm3/PreSession/display (or /etc/gdm3/PreSession/Default), and
       then one of the sessions defined in /usr/share/xsessions. When the
       session has completed, gdm attempts to run
       /etc/gdm3/PostSession/display, or /etc/gdm3/PostSession/Default.

       gdm3 maintains information about the displays it is managing in
       /var/lib/gdm3. This includes xauth information, so this directory is
       not readable to normal users.

       gdm3 uses PAM to perform authentication using the config file
       /etc/pam.d/gdm3.

ENVIRONMENT

       XAUTHORITY
           Upon session startup, GDM sets the XAUTHORITY environment variable
           to a session-specific file in /var/run/gdm3.

           Applications and scripts that assume this file is set to
           ~/.Xauthority will not work. To access the display you need both
           DISPLAY and XAUTHORITY variables.

AUTHOR

       Martin Kasper Petersen <mkp@SunSITE.auc.dk>

       This manual page written by Steve Haslam <araqnid@debian.org> for
       Debian GNU/Linux. Updated by Raphaeel Hertzog <hertzog@debian.org>,
       Ryan Murray <rmurray@debian.org>, Josselin Mouette <joss@debian.org>
       and Vincent Lefevre <vincent@vinc17.net>.