Simple Desktop Display Manager (SDDM) is a
display manager (a graphical login program and session manager) for the
X11 and
Wayland windowing system
In computing, a windowing system (or window system) is software that manages separately different parts of display screens. It is a type of graphical user interface (GUI) which implements the WIMP (windows, icons, menus, pointer) paradigm for ...
s. SDDM was written from scratch in
C++11
C++11 is a version of the ISO/ IEC 14882 standard for the C++ programming language. C++11 replaced the prior version of the C++ standard, called C++03, and was later replaced by C++14. The name follows the tradition of naming language versio ...
and supports theming via
QML.
SDDM is
free and open-source software
Free and open-source software (FOSS) is a term used to refer to groups of software consisting of both free software and open-source software where anyone is freely licensed to use, copy, study, and change the software in any way, and the source ...
subject to the terms of the
GNU General Public License
The GNU General Public License (GNU GPL or simply GPL) is a series of widely used free software licenses that guarantee end user
In product development, an end user (sometimes end-user) is a person who ultimately uses or is intended to ulti ...
version 2 or later.
[
]
Adoption
In 2013, Fedora KDE members decided to default to SDDM in Fedora 21.
KDE
KDE is an international free software community that develops free and open-source software. As a central development hub, it provides tools and resources that allow collaborative work on this kind of software. Well-known products include the ...
chose SDDM to be the successor of the KDE Display Manager for KDE Plasma 5
KDE Plasma 5 is the fifth and current generation of the graphical workspaces environment created by KDE primarily for Linux systems. KDE Plasma 5 is the successor of KDE Plasma 4 and was first released on 15 July 2014.
It includes a new defaul ...
.LXQt
LXQt is a free and open source lightweight desktop environment. It was formed from the merger of the LXDE and Razor-qt projects.
Like its GTK predecessor LXDE, LXQt does not ship or develop its own window manager, instead LXQt lets the use ...
developers recommend SDDM as a display manager.
See also
* GDM, the default graphical login program of GNOME
* LightDM
LightDM is a free and open-source X display manager that aims to be lightweight, fast, extensible and multi-desktop. It can use various front-ends to draw User Interface, also called ''Greeters''. It also supports Wayland.
LightDM is the def ...
, formerly the default graphical login program of Ubuntu
Ubuntu ( ) is a Linux distribution based on Debian and composed mostly of free and open-source software. Ubuntu is officially released in three editions: '' Desktop'', '' Server'', and ''Core'' for Internet of things devices and robots. All th ...
, replaced by GDM
References
KDE Software Compilation
Software that uses QML
Software that uses Qt
X display managers
{{KDE-stub