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Wayland is a protocol, not a display server

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Petr Bokoč 2021-02-04 12:36:08 +01:00
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modules/system-administrators-guide/pages/Wayland.adoc
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include::{partialsdir}/entities.adoc[]
[[ch-Wayland]]
= The Wayland Display Server
Wayland is a display server which was (at the time of writing) introduced as the default display server in GNOME. It is said that Wayland will eventually replace X11 as the default display server on Linux and many distributions have begun implementation of Wayland. Wayland is a more modern display server and has a smaller code base currently. Wayland is still under development, and there are still applications and behaviours that don't work as expected, you may find that some applications have not been updated to work properly in Wayland and currently the only way these applications will run is using Xorg instead of Wayland. This includes some legacy system applications and games.
= The Wayland Protocol
Wayland is a display server protocol which was (at the time of writing) introduced as the default in GNOME. It is said that Wayland will eventually replace X11 as the default display server on Linux and many distributions have begun implementation of Wayland. Wayland is a more modern protocol and has a smaller code base currently. Wayland is still under development, and there are still applications and behaviours that don't work as expected, you may find that some applications have not been updated to work properly in Wayland and currently the only way these applications will run is using Xorg instead of Wayland. This includes some legacy system applications and games.
.Wayland in Fedora
Wayland is enabled by default in the GNOME Desktop. You can choose to run GNOME in X11 by choosing the Gnome on xorg option in the session chooser on the login screen. Currently KDE still uses X11 and although there is a plasma-wayland session available, it is not considered stable or bugfree at this time.
.Determining whether you are using Wayland
== Determining whether you are using Wayland
One way to determine if you're running in Wayland, is to check the value of the variable $WAYLAND_DISPLAY. To do this type:
[source,bash]
@ -34,9 +34,9 @@ There is also a legacy X11 server provided with Wayland for compatibility purpos
$ xlsclients
----
There is also the `lg` (looking glass) tool in GNOME that will allow you to determine what display server a window is using. To do this, you run the application by typing `lg` in the run dialog or at the command line, select "`Windows`" in the upper right corner of the tool, and click on the application name (or open window) you want to know about. If the window is running in wayland it will say "`MetaWindowWayland`" and if it is running in X11 it will say "`MetaWindowX11`".
There is also the `lg` (looking glass) tool in GNOME that will allow you to determine which protocol a specific window is using. To do this, you run the application by typing `lg` in the run dialog or at the command line, select "`Windows`" in the upper right corner of the tool, and click on the application name (or open window) you want to know about. If the window is running in wayland it will say "`MetaWindowWayland`" and if it is running in X11 it will say "`MetaWindowX11`".
.Additional Resources
== Additional Resources
To find out more about Wayland, please see the following website:
https://wayland.freedesktop.org/