GNOME Display Manager

GDM is a display manager that implements all significant features required for managing attached and remote displays. GDM was written from scratch and does not contain any XDM or X Consortium code.{{cite web

| url = https://help.gnome.org/admin/gdm/

| title = GDM documentation}}

GDM comprises the following components:

• Chooser – a program used to select a remote host as the source for a remote display on the attached display (gdm-host-chooser)
• Greeter – the graphical login window (provided by GNOME Shell)
• Pluggable authentication module (PAM)
• X Display Manager Control Protocol (XDMCP)

Until version 2.22,{{cite web

| url = http://git.gnome.org/browse/gdm/commit/gui/gdmlogin.c?h=gnome-2-22&id=3dfd5dedf50bb4a95730dea046aedcfec678fca1

| title = migrate gui to new config framework with a chainsaw

| date = 2007-06-01

| access-date = 2014-04-26}} GDM had a few Easter eggs, in the form of strings to be entered in the username box. These can be found in the source file "gui/guilogin.c", in a function named "evil".{{cite web

| archive-url = https://gitlab.gnome.org/GNOME/gdm/blob/gnome-2-20/gui/gdmlogin.c#L807

| url = http://git.gnome.org/cgit/gdm/tree/gui/gdmlogin.c?h=gnome-2-20#n806

| title = gdm – guilogin.c

| archive-date = 2018-05-31

| access-date = 2018-08-09}}

• Dancing login – type "Start Dancing" to start, and "Stop Dancing" to stop.
• (This requires the standard greeter ("GTK+ Greeter"), rather than the graphical one ("Themed Greeter")).
• "Gimme Random Cursor" – can be used repeatedly.
• This changes the mouse cursor to a randomly selected 1 of 77 different "cursor fonts" as defined in the X11 specification.
• "Require Quarter" (or "Require Quater", for backward compatibility with a typo in the original),{{cite web

| url = http://git.gnome.org/cgit/gdm/commit/?h=gnome-2-20&id=ee8de912c84d9df4180965fe49108051f563ce11 | title= GDM commit ee8de912

| date = 5 March 2001

| access-date = 2009-08-26}} then log in normally – a dialog box that reads "Please insert 25 cents to log in." appears after entering the password. Clicking "OK" allows the login process to proceed as normal.

Some of the copyright notices of GDM refer to the "Queen of England", whom release announcements from version 2.2.1 also named as a maintainer.{{cite web

| url = https://mail.gnome.org/archives/gnome-announce-list/2001-May/msg00008.html

| title = ANNOUNCE: GDM 2.2.1, the 'Just because you're not paranoid doesn't mean they're not after you' release

| date = 4 May 2001

| quote = Gdm2 was originally written by Martin K. Petersen , and is now maintained by the Queen of England.}} Subsequently, developers realised that the title "Queen of England" has not existed since the Acts of Union of 1707.{{cite web

| url = https://mail.gnome.org/archives/gdm-list/2004-March/msg00002.html

| title = ANNOUNCE: GDM 2.5.90.2 (unstable), the "Nose poking" release

| date = 4 March 2004}}

{{Portal|Free and open-source software}}

1. getty – a non-graphical login program
2. LightDM
3. SDDM (KDE Plasma 5 and KDE Plasma 6)
4. KDE Display Manager (KDE Plasma 4)

{{Reflist}}

{{Commons category}}

• {{Official website}}

{{GNOME}}

{{XWinSys}}

Category:GNOME

Category:X display managers