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— en:system:userspace:display_manager [2022/03/25 23:34] (current)
i3_relativism created
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 +{{confused|window manager}}
 +{{InfoBox stack
 +|{{InfoBox wikipedia|X display manager (program type)|header=true}}
 +}}
 +A '''display manager''' ('''DM'''), sometimes known as '''login manager''', [[Article description::presents the user with a graphical login screen to start a GUI session, either [[Xorg|X]] or [[Wayland]].]]
  
 +A display manager is not mandatory. X or Wayland can be started from a shell in a VT, but one can provide extra or useful funtionality. For how to run X without a DM, see [[X without Display Manager]].
 +
 +== Available software ==
 +
 +Some display managers are listed below.
 +
 +NB: Some Wayland DMs below are found in the overlay [https://github.com/bsd-ac/wayland-desktop wayland-desktop], but not yet merged to the official Portage tree.
 +
 +{| class="table table-condensed table-striped sortable"
 +|-
 +! scope="col" width="25%" | Name
 +! Package
 +! Type
 +! Description
 +|-
 +| [[CDM]] || {{Package|x11-misc/cdm}} || Console || Minimalistic.
 +|-
 +| [[GNOME/gdm]] || {{Package|gnome-base/gdm}} || X / Wayland || Often used with GNOME.
 +|-
 +| [[Greetd]] || {{Package|gui-apps/gtkgreet}}<br>{{Package|gui-apps/tuigreet}}<br />[https://github.com/bsd-ac/wayland-desktop/tree/master/gui-apps/qtgreet gui-apps/qtgreet] || Wayland || Frontends for [[greetd]]. TUIGreetd runs in console.
 +|-
 +| [[LightDM]] || {{Package|x11-misc/lightdm}} || X || Lightweight, and customizable via greeters.
 +|-
 +| [[LXDE|LXDM]] || {{Package|lxde-base/lxdm}} || X ||LXDE Display Manager.
 +|-
 +| [[Qingy]] || {{Package|sys-apps/qingy}} || console || getty replacement.
 +|-
 +| [[SDDM]] || {{Package|x11-misc/sddm}} || X / Wayland || Modern, fast DM aiming to be simple and beautiful. Highly customizable, eye candy display manager from KDE
 +|-
 +| [[SLiM]] || {{Package|x11-misc/slim}} || X || Requires only a few dependencies.
 +|-
 +| [[WDM]] || {{Package|x11-misc/wdm}} || X || Modification of XDM.
 +|-
 +| XDM || {{Package|x11-apps/xdm}} || X || X.Org's DM.
 +|}
 +
 +== Configuration ==
 +
 +{{Warning|Before setting up and using a display manager, be sure that the chosen GUI environment, [[Xorg/Guide#Using_startx|startx]] or [[Wayland]], works without problems. If something does not work refer to the troubleshooting guides, such as [[Xorg/Guide]].}}
 +
 +In all major Linux operating systems, display managers are started automatically on boot. In order for this to happen automatically a script must be added to the init system's appropriate runlevel. Examples for [[Display_manager#OpenRC|OpenRC]] and [[Display_manager#systemd|systemd]] are provided below.
 +
 +=== OpenRC ===
 +
 +Under most circumstances, the [[OpenRC]] init system (Gentoo's default [[init system]]) will be used to start the display manager. The following examples will set [[SDDM]] as the display manager, adjust as necessary for other display managers.
 +
 +Historically, the ''xdm'' init script handled the starting of the display manager, which has now been deprecated in favor of the ''display-manager'' init script from {{Package|gui-libs/display-manager-init}}, jump to next section for a sytem still using xdm.
 +
 +If {{Package|gui-libs/display-manager-init}} is not present, emerge it with:
 +
 +{{Emerge|gui-libs/display-manager-init}}
 +
 +The configuration file should be modified to use [[SDDM]]:
 +
 +{{FileBox|filename=/etc/conf.d/display-manager|title=Set SDDM as the display manager|lang=bash|1=
 +CHECKVT=7
 +DISPLAYMANAGER="sddm"
 +}}
 +
 +To start the chosen display manager on boot, add the ''display-manager'' to the system's ''default'' runlevel:
 +
 +{{RootCmd|rc-update add display-manager default}}
 +
 +To start the ''display-manager'' immediately, run:
 +
 +{{RootCmd|rc-service display-manager start}}
 +
 +==== Historical use of the deprecated ''xdm'' init script ====
 +
 +{{FileBox|filename=/etc/conf.d/xdm|title=Set SDDM as the display manager|lang=bash|1=
 +CHECKVT=7
 +DISPLAYMANAGER="sddm"
 +}}
 +
 +To start the chosen display manager on boot, add the ''xdm'' to the system's ''default'' runlevel:
 +
 +{{RootCmd|rc-update add xdm default}}
 +
 +To start SDDM immediately, run:
 +
 +{{RootCmd|rc-service xdm start}}
 +
 +=== systemd ===
 +
 +If using [[systemd]] as the init system, first locate the chosen {{Path|<display-manager>.service}} file.
 +
 +To start [[SDDM]] on boot, enable the service:
 +{{RootCmd|systemctl enable sddm.service}}
 +
 +To start [[SDDM]] immediately, run:
 +{{RootCmd|systemctl start sddm.service}}
 +
 +== See also ==
 +
 +* {{See also|Xorg/Guide}}
 +* {{See also|X without Display Manager}}
 +* {{See also|Window manager}}
 +* {{See also|Desktop environment}}
 +* {{See also|Login}}
 +
 +[[Category:Display manager]]
 +[[Category:Login]]
 +[[Category:Meta]]