Simple Desktop Display Manager (SDDM) is a
display manager
In the X Window System, an X display manager is a graphical login manager which starts a login session on an X server from the same or another computer.
A display manager presents the user with a login screen. A session starts when a user s ...
(a graphical login program) for the
X11
The X Window System (X11, or simply X) is a windowing system for bitmap displays, common on Unix-like operating systems.
X originated as part of Project Athena at Massachusetts Institute of Technology (MIT) in 1984. The X protocol has been at ...
and
Wayland windowing systems. SDDM was written from scratch in
C++11
C++11 is a version of a joint technical standard, ISO/IEC 14882, by the International Organization for Standardization (ISO) and International Electrotechnical Commission (IEC), for the C++ programming language. C++11 replaced the prior vers ...
and supports theming via
QML
QML (Qt Meta-object Language) is a user interface markup language. It is a declarative language (similar to CSS and JSON) for designing user interface–centric applications. Inline JavaScript code handles imperative aspects. It is associate ...
.
SDDM is
free and open-source software
Free and open-source software (FOSS) is software available under a license that grants users the right to use, modify, and distribute the software modified or not to everyone free of charge. FOSS is an inclusive umbrella term encompassing free ...
subject to the terms of the
GNU General Public License
The GNU General Public Licenses (GNU GPL or simply GPL) are a series of widely used free software licenses, or ''copyleft'' licenses, that guarantee end users the freedom to run, study, share, or modify the software. The GPL was the first ...
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 enable collaborative work on its projects. Its products include the KDE Plasma gra ...
chose SDDM to be the successor of the
KDE Display Manager for
KDE Plasma 5
KDE Plasma 5 is the fifth generation of the KDE Plasma 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 was succeeded by KDE Pl ...
.
The
LXQt
LXQt is a free and open-source software, 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 ...
developers recommend SDDM as a display manager.
See also
*
LightDM, Light display manager, formerly written for
Ubuntu
Ubuntu ( ) is a Linux distribution based on Debian and composed primarily of free and open-source software. Developed by the British company Canonical (company), Canonical and a community of contributors under a Meritocracy, meritocratic gover ...
, now independent
*
GDM, the default graphical login program for
GNOME
A gnome () is a mythological creature and diminutive spirit in Renaissance magic and alchemy, introduced by Paracelsus in the 16th century and widely adopted by authors, including those of modern fantasy literature. They are typically depict ...
References
KDE Software Compilation
Software that uses QML
Software that uses Qt
X display managers
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