Simple Desktop Display Manager (SDDM) is a
display manager (a graphical login program and session manager) 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 provides the basic framework for a GUI environment: drawing and moving windows on the display device and interacting wi ...
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 fo ...
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 versions b ...
and supports theming via
QML
QML (Qt Modeling 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 associated wi ...
.
SDDM is
free and open-source software 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 users the four freedoms to run, study, share, and modify the software. The license was the first copyleft for general ...
version 2 or later.
Adoption
In 2013,
Fedora KDE members decided to default to SDDM in Fedora 21.
KDE chose SDDM to be the successor of the
KDE Display Manager
KDE Display Manager (KDM) is a display manager (a graphical login program) developed by KDE for the windowing systems X11.
KDE Display Manager was based on the source code of X display manager and was the default display manager of the KDE Softw ...
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 default ...
.
The
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 user ...
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 ...
, replaced by GDM
References
KDE Software Compilation
Software that uses QML
Software that uses Qt
X display managers
{{KDE-stub