Sway: Difference between revisions

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[http://swaywm.org Sway] is a tiling [[Wayland]] compositor. It's a drop-in replacement for the i3 window manager.
[https://swaywm.org Sway] is a tiling [[Wayland]] compositor and a drop-in replacement for the [[i3wm |i3 window manager]]. It works with your existing i3 configuration and supports most of i3's features, plus a few extras.


== Prerequisites ==
{{:Include:Setup-desktop}}
Install appropriate [[#Install Graphics Drivers|video]] drivers for your hardware before you can [[#Starting sway|launch sway]]. Without  graphics drivers [[#Video Driver Issues|errors]] may occur.


First, install & configure eudev:
== Manual Installation ==


The below installation step allows you to pick and choose various componenents for your Sway Desktop.
=== Add a normal user ===
Use <code>setup-user</code> to add a non-system normal user for running Sway.
{{cmd|# setup-user}}
=== Set up eudev ===
[[eudev]] is recommended and required for Sway. Without it, sway cannot connect to input devices.
{{cmd|# setup-devd udev}}
=== Install Graphics Drivers ===
{{:Graphics_driver}}
=== Setting up a seat manager ===
Wayland compositors need raw access to input and output devices. This is mediated by a [[seat manager]]. Using either [[seatd]] or [[elogind]] is supported. Using both may lead to conflicts.
==== Install seatd ====
See [[Seatd]] for the mandatory steps needed for sway to work with seatd.
==== Install elogind ====
See [[Elogind]].
=== Install fonts ===
Install DejaVu fonts, which has good Unicode coverage:
{{cmd|# apk add font-dejavu}} 
=== Install Sway ===
{{cmd|# apk add sway \
    xwayland            \ # if you need xserver
    foot                \ # default terminal emulator. Modify $term in config for a different one.
    wmenu                \ # default wayland native menu for choosing program and screensharing monitor
    swaylock swaylockd  \ # lockscreen tool
    swaybg              \ # display wallpaper
    grim                \ # screenshot tool
    wl-clipboard        \ # clipboard management
    i3status            \ # simple status bar
    swayidle              # idle management (DPMS) daemon
}}
For complimentary software alternatives, see [https://github.com/swaywm/sway/wiki/Useful-add-ons-for-sway the relevant page from sway's wiki] or [https://wiki.gentoo.org/wiki/List_of_software_for_Wayland this list at Gentoo Wiki.]
== Configuration ==
Copy default sway configuration to <code>~/.config</code>:
{{cmd|$ mkdir -p ~/.config/sway
$ cp /etc/sway/config ~/.config/sway/}}
Read through it to learn the default keybindings.
Sway configuration is mostly backwards-compatible with that of [[I3wm|i3]] and if you are looking for a solution for a specific issue, you may also try checking if it hasn't been provided for i3WM.
For additional information, start at <code>man 5 sway</code> and read the [https://github.com/swaywm/sway/wiki upstream wiki].
=== Starting sway ===
One can launch sway by issuing the command sway from TTY.
{{Cmd|$ sway}}
You can also sway with a greeter like [[greetd]]. In this case, to start sway session for the user, you might want to start a [[D-Bus#D-Bus_session|D-Bus session]] when the greetd session is started.
{{Cat|/etc/greetd/environments|<nowiki># Launch Sway with a D-Bus server available, use:
dbus-run-session -- sway
</nowiki>}}
D-Bus is required for PipeWire and screensharing in Firefox and Chromium. Running with <code>dbus-run-session</code> is a convenience wrapper that will explicitly export the path of the session bus.
=== PipeWire and Screensharing ===
For audio playback, install [[PipeWire#Installation|PipeWire]]. The sway compositor has no involvement in audio playback.
For screen sharing, applications are split into two categories:
* Those which use the native wayland protocol, </code>wlr-screencopy</code>
* Those which use the API from Flatpak's <code>xdg-desktop-portal</code> (this portal is also used by native non-Flatpak applications).
Applications in the first group require no additional setup. Applications in the second group (which includes Firefox and Chromium) require setting up xdg portals in addition to [[PipeWire#Installation|PipeWire]].
{{Cmd|#  apk add xdg-desktop-portal xdg-desktop-portal-wlr}}
Launch PipeWire with Sway. Use your service manager of choice, or add the following to sway config:
<pre>
<pre>
# apk add eudev
exec /usr/libexec/pipewire-launcher
# setup-udev
</pre>
</pre>


Then install the mesa graphics drivers:
If your are using automatic [[D-Bus]] activation, you also need to set DBus variables for the portal and screensharing features to work:
 
exec dbus-update-activation-environment WAYLAND_DISPLAY XDG_CURRENT_DESKTOP=sway
 
=== Greetd ===
 
See [[greetd]] for an optional login manager.
 
=== Screen lock and suspend-to-RAM ===
 
If [[Elogind]] is not used, consider using {{Pkg|powerctl}}.
 
Putting the system to sleep with elogind requires elevated privileges or additional configuration.
 
For details on configuring <code>doas</code> with <code>elogind</code>, see [[Elogind#Doas]]
 
To put the system to sleep after 600 seconds, use:
 
exec swayidle -w timeout 600 'doas /bin/loginctl suspend'
 
loginctl suspend command will trigger the screenlock, as mentioned in the section [[#Install elogind (optional)|Install elogind (optional)]] above.
 
Do not lock the screen if program is running in full screen:
 
for_window [app_id="^.*"] inhibit_idle fullscreen
 
=== Elogind and swayidle ===
 
<code>swayidle</code> has integration with <code>elogind</code> and can handle <code>before-sleep</code> events.
 
If using <code>swayidle before-sleep</code>, there will be a race condition, so that when you resume the computer from suspend, the screen shows the contents of the unlocked screen for a second before showing the actual lock screen.  This can be a privacy concern.
 
To solve this issue, do the following:
 
Create this file <code>/etc/elogind/system-sleep/10-swaylock.sh</code>, then add the following script to this file:
 
#!/bin/sh
if [ "${1}" == "pre" ]; then
  touch /tmp/swaylock-sleep
  sleep 1
fi
 
Then set it to executable.
 
Later, once sway is installed, add the following line to sway config:
 
exec touch /tmp/swaylock-sleep && inotifyd swaylock /tmp/swaylock-sleep
 
With this line, the screen will be promptly locked before suspend-to-RAM starts.
 
=== Brightness control ===
 
Controlling display backlight requires either the proper udev rules, or using some form of privilege escalation.
 
{{Pkg|brightnessctl}} is a reliable alternative, although its default udev rules require too wide permissions (see {{Issue|15409}}). You may need your own rules, or configure doas to allow running it as an unprivileged user.
 
Optionally enable brightnessctl service to restore brightness settings on reboot:
 
rc-update add brightnessctl
 
=== Output scaling for high resolution displays ===


<pre>
Without further configuration, program interfaces might be too small to use on high resolution displays.
# apk add mesa-dri-gallium
 
</pre>
Sway supports the per-display configuration of


The following links contain guides for setting up the video stack.
* fractional (e.g., 1.5x), and
* integer scaling (e.g., 2x)


* [[Intel Video]]
However, fractional scaling is discouraged due to both the performance impact and the blurry output it produces. In this case, where 1x scaling is too small and 2x scaling is too large, program-specific GTK/QT based scaling is recommended.  See below.
* [[Radeon Video]]


Add yourself to the input and video groups:
To enable Sway scaling, the user can first preview different scaling factors with <code>wdisplays</code> package.  Note the output name (eDP-1, LVDS-1) and try apply scaling factors such as 1 and 2.  To make changes permanent, add below to ~/.config/sway/config.


<pre>
<pre>
# adduser $USER input
output <name> scale <factor>
# adduser $USER video
</pre>
</pre>


You have to log out and back in for this to take effect.
To use toolkit scaling, use
{{Cmd|# for GTK-based programs such as firefox and emacs:
export GDK_DPI_SCALE{{=}}2


Install some TTF fonts:
<nowiki>#</nowiki> for QT-based programs
export QT_WAYLAND_FORCE_DPI{{=}}"physical"
<nowiki>#</nowiki> or if still too small, use a custom DPI
export QT_WAYLAND_FORCE_DPI{{=}}192 # 2x scaling
export QT_QPA_PLATFORM{{=}}"wayland-egl"
}}


=== Screenshots ===
A simple tool that works well under Wayland is Grimshot. Example keybindings:
<pre>
<pre>
# apk add ttf-dejavu
bindsym Print exec grimshot copy area
bindsym Shift+Print exec grimshot copy screen
bindsym Control+Print exec grimshot save area ~/Pictures/$(date +%d-%m-%Y-%H-%M-%S).png
bindsym Control+Shift+Print exec grimshot save screen ~/Pictures/$(date +%d-%m-%Y-%H-%M-%S).png
</pre>
</pre>


Since sway 1.6.1 (more specifically, since wlroots 0.14), you need to set up libseat backend if you wish to run sway directly (without nesting it in another wayland compositor). To do that, [[Enable Community Repository|enable the community repository]] and choose one of the following methods:
See [https://github.com/swaywm/sway/wiki/Useful-add-ons-for-sway the sway wiki's article] for a list of screenshot tools.
 
=== Make clipboard content persistent ===
 
By default the clipboard content does not persist after terminating the program: you copy some text from Firefox and then exit Firefox, the copied text is also lost.


<dl>
Install {{Pkg|clipman}} from testing repo and add the following to sway config:


<dt>Option 1: seatd daemon (recommended)</dt>
<dd>
<pre>
<pre>
# apk add seatd
exec wl-paste --type text/plain --watch clipman store --histpath="~/.local/state/clipman-primary.json"
# rc-update add seatd
bindsym $mod+h exec clipman pick --tool wofi --histpath="~/.local/state/clipman-primary.json"
# rc-service seatd start
# adduser $USER seat
</pre>
</pre>


If you are already logged in as a $USER, you will need to relogin.
=== Firefox picture-in-picture mode/floating windows ===
</dd>


<dt>Option 2: seatd-launch</dt>
Add this to your sway config file (modify the numeric values to suit your needs and your display):
<dd>
<pre>
<pre>
# apk add seatd-launch
for_window [app_id="firefox" title="^Picture-in-Picture$"] floating enable, move position 877 450, sticky enable, border none
</pre>
</pre>


When starting sway, you will need to prefix invocation with <code>seatd-launch</code>.  
=== Start with NumLock enabled ===
Note: <code>seatd-launch</code> is a suid binary, so it might be wise to use one of the other methods from a security perspective.
 
</dd>
Add this to your sway config file:
 
  input type:keyboard xkb_numlock enabled
 
=== Change mouse cursor theme and size ===


<dt>Option 3: elogind daemon</dt>
Add to your sway config:
<dd>


seat seat0 xcursor_theme my_cursor_theme my_cursor_size
For example, set a mouse cursor, using GNOME Adwaita theme:
seat seat0 xcursor_theme Adwaita 16
You can inspect their values with <code>echo $XCURSOR_SIZE</code> and <code>echo $XCURSOR_THEME</code>. If reloading your config does not result in change, try logging out and in.
{{Note|Wayland allows for client-side cursors. It is possible that applications do not evaluate the values of <code>$XCURSOR_SIZE</code> and <code>$XCURSOR_THEME</code>.}}
=== Custom keyboard layout ===
To use custom keyboard layout, just use
<pre>
<pre>
# apk add elogind polkit-elogind
input type:keyboard {
# rc-update add elogind
  xkb_file /path/to/my/custom/layout
# rc-service elogind start
}
</pre>
</pre>


Using <code>elogind</code> will automatically set the necessary permissions, so you can skip adding groups like <code>seat</code> and <code>video</code>
=== Changing default application fonts ===
 
See [[Fontconfig]]


</dd>
== Troubleshooting ==


</dl>
If you encounter any issues, try running <code>sway -Vc /etc/sway/config</code>. It will run sway with the default config file and set the output to be more verbose. It is generally a good idea to track your config files with git (when and if at all you use a remote repository for them, keep it private for security reasons).


== Installation ==
To capture the sway error log in a file for troubleshooting, replace <code>sway</code> in your startup file by
<code>sway -d 2> ~/sway_error.log</code>.


We can now install sway:
Alternately, you can also issue the below command from TTY.
{{cmd|$ sway -d 2> ~/sway_error.log}}


<pre>
=== Video Driver Issues ===
# apk add sway sway-doc
# apk add                \ # Install optional dependencies:
    xwayland            \ # recommended for compatibility reasons
    foot                \ # default terminal emulator
    dmenu                \ # default application launcher
    swaylock            \ # lockscreen tool
    swaybg              \ # wallpaper daemon
    swayidle              # idle management (DPMS) daemon
</pre>


== Running Sway ==
After installing sway, while launching it for the first time, lack of proper [[#Install Graphics Drivers|video drivers]] causes various error messages such as:
* "unable to create backend"
* "Failed to create renderer"


To run sway, first set XDG_RUNTIME_DIR to a suitable location (e.g. create a .run folder in your home directory and set it to ~/.run). Then run sway from the Linux console (dbus-launch is used because pipewire needs it, it is included in dbus-x11 and you may omit it):
Do install necessary drivers for your [[#Install Graphics Drivers|graphics card]] for sway to work.  


<pre>
=== Flatpaks ===
$ XDG_RUNTIME_DIR=~/.run dbus-launch sway
</pre>


(if you run sway with seatd-launch, you will need to use <code>$ XDG_RUNTIME_DIR=~/.run dbus-launch seatd-launch sway</code>)
{{main|Flatpak}}
Due to their sandboxing, flatpaks require the use of a portal frontend (xdg-desktop-portal) and backends (such as xdg-desktop-portal-wlr, xdg-desktop-portal-gtk, xdg-desktop-portal-gnome) that implement the methods. When in doubt, install multiple backends. For more information on backends, see [https://github.com/flatpak/xdg-desktop-portal/#using-portals flatpak's page on the subject]. In addition to the steps under the "Firefox Screensharing" section, it may also be necessary to launch additional backends in your Sway config file. Otherwise, you may run into GDBus errors as your flatpak fails to interface with the portal. This can cause issues such as with opening your file directories from a flatpak application.


You can also create a simple alias in your shell rc file (e.g. .zshrc), like:
After installing different backends, you might need to add the relevant backends to your sway config file similarly to in the "Firefox Screensharing" section above. For example, an autostart section of your sway config file may include:
<pre>
<pre>
alias swayinit="XDG_RUNTIME_DIR=~/.run dbus-launch seatd-launch sway"
exec /usr/libexec/xdg-desktop-portal-gtk
exec /usr/libexec/xdg-desktop-portal-wlr
exec /usr/libexec/xdg-desktop-portal-gnome
</pre>
</pre>


See the [https://wiki.alpinelinux.org/wiki/Wayland Wayland] page for a permanent configuration
This is only needed if they are not started automatically via other means.


{{Note|
=== Firefox (Flatpak) and/or GTK apps ===
swaylock needs to be able to read your <code>/etc/shadow</code> file to be able to validate your password
 
}}
==== Disappearing cursor ====


== Configuration and Usage ==
You may need to get an icon pack and possibly a theme from [https://www.pling.com/browse?cat=107&ord=latest Pling store] and set <code>GTK_THEME</code> environmental variable. Alternatively you can install a theme      for all users (search [https://pkgs.alpinelinux.org/ Alpine Linux Packages] for ''*-icon-theme'') using <code>apk add</code>.


An example config is provided at <code>/etc/sway/config</code>. Copy it to <code>~/.config/sway/config</code> and read through it to learn the default keybindings.
==== Missing file picker/cannot download ====


You might want to have gaps between windows, in which case add:
Go to ''about:config'' and set <code>widget.use-xdg-desktop-portal.file-picker</code> to 0.
<pre>
inner_gaps 20
outer_gaps 20
</pre>
(replace 20 with the amount of pixels you want to be used for gaps) in your sway config.


You might have two monitors, and you might want to set their position, so here's an example of how to do it:
=== Nvidia Issues ===
<pre>
{{Main|NVIDIA}}
output eDP-1 mode 1920x1080@60Hz
As of Dec 31 2022, [https://developer.nvidia.com/docs/drive/drive-os/latest/linux/sdk/common/topics/window_system_stub/Gnome-WaylandDesktopShellSupport136.html Nvidia still doesn't fully support Wayland]. Therefore, the possible solutions are as outlined in the link, or setting your WLR_BACKENDS environmental variables to <code>drm,libinput</code> or <code>x11</code> (add libinput here as well if you cannot use your mouse and keyboard after starting Sway). The latter also works for AMD/ATI cards ('''make sure to install libinput first''').
output eDP-1 position 1920,0
output DP-1 position 0,0
output DP-1 mode 1920x1080@120Hz
</pre>
In this case, eDP-1 is the internal laptop monitor running at 60Hz and DP-1 is the external monitor running at 120Hz. The position of the laptop monitor is where the external monitor's width ends, so if the display is 1920 pixels wide and it is on the left, the laptop's monitor would be on the right, so it's width would start at the end of the second monitor's width, so at 1920. Replace the eDP-1 and DP-1 outputs with your own ones, and to change resolution and refresh rate, change the mode according to your parameters.


For additional information, start at <code>man 5 sway</code> and read the [https://github.com/swaywm/sway/wiki upstream FAQ].
== See Also ==
* [https://github.com/swaywm/sway/wiki/ Sway Wiki]
* [https://wiki.archlinux.org/title/Sway Archwiki]
* [https://wiki.gentoo.org/wiki/Sway Gentoo Wiki]
* [https://wiki.postmarketos.org/wiki/Sway PostmarketOS Wiki]


[[Category:Compositor]]
[[Category:Desktop]]
[[Category:Desktop]]
[[Category:Window Managers]]
[[Category:Wayland]]

Latest revision as of 09:47, 22 October 2024

Sway is a tiling Wayland compositor and a drop-in replacement for the i3 window manager. It works with your existing i3 configuration and supports most of i3's features, plus a few extras.

Note: Before installing any desktop, If you are using Hyper-V and Xorg refuses to start, blacklist the hyperv_drm module by adding it to the /etc/modprobe.d/blacklist.conf file.

Installation using setup-desktop

The Alpine Linux script for setting up a desktop quickly is setup-desktop.

# setup-desktop

On running the above command, you will be prompted to select a desktop environment.

Which desktop environment? ('gnome', 'plasma', 'xfce', 'mate', 'sway' or 'none') [none]

Once you have chosen a desktop environment, this script installs the chosen desktop along with all the necessary packages, firefox browser and adds the necessary services to run on startup. You can reboot when complete and the system will boot into a graphical login screen with the desktop environment. Depending on the desktop chosen, the script also activates the necessary services like dbus, elogind, login manager etc..

To view all the packages that are installed by the script for the chosen desktop you can issue the below command:

# cat /sbin/setup-desktop

Install appropriate video drivers for your hardware before you can launch sway. Without graphics drivers errors may occur.

Manual Installation

The below installation step allows you to pick and choose various componenents for your Sway Desktop.

Add a normal user

Use setup-user to add a non-system normal user for running Sway.

# setup-user

Set up eudev

eudev is recommended and required for Sway. Without it, sway cannot connect to input devices.

# setup-devd udev

Install Graphics Drivers

Many desktop environments need a graphics driver to work properly. Graphics cards of recent vintage need a driver to work. So one needs to install one of the below graphics drivers before installing a desktop:

Information about the video cards that are installed in the computer may be found using lspci command, which is not available by default. Refer the instructions to install pciutils package.

To identify the graphics card (the Subsystem output shows the specific model), issue the below command:

lspci -v | grep -A1 -e VGA -e 3D

Then, install an appropriate driver.

To install X11 based desktop, you may want to install specific Xorg xf86 driver packages for your video card's chipset, as they may support specific features, effects and acceleration modes, and avoid error messages during X initialization. However, the most basic X features should work fine with just using the default kernel video-modesetting drivers.

Tip: xf86 driver packages follow standard naming conventions. So information found in ArchWiki, or Gentoo wiki are to a large degree, also applicable to configuring the video hardware on Alpine Linux, except for proprietary drivers which are not available.

To see available xf86 video driver packages run:

$ apk search xf86-video

Setting up a seat manager

Wayland compositors need raw access to input and output devices. This is mediated by a seat manager. Using either seatd or elogind is supported. Using both may lead to conflicts.

Install seatd

See Seatd for the mandatory steps needed for sway to work with seatd.

Install elogind

See Elogind.

Install fonts

Install DejaVu fonts, which has good Unicode coverage:

# apk add font-dejavu

Install Sway

# apk add sway \ xwayland \ # if you need xserver foot \ # default terminal emulator. Modify $term in config for a different one. wmenu \ # default wayland native menu for choosing program and screensharing monitor swaylock swaylockd \ # lockscreen tool swaybg \ # display wallpaper grim \ # screenshot tool wl-clipboard \ # clipboard management i3status \ # simple status bar swayidle # idle management (DPMS) daemon

For complimentary software alternatives, see the relevant page from sway's wiki or this list at Gentoo Wiki.

Configuration

Copy default sway configuration to ~/.config:

$ mkdir -p ~/.config/sway $ cp /etc/sway/config ~/.config/sway/

Read through it to learn the default keybindings. Sway configuration is mostly backwards-compatible with that of i3 and if you are looking for a solution for a specific issue, you may also try checking if it hasn't been provided for i3WM.

For additional information, start at man 5 sway and read the upstream wiki.

Starting sway

One can launch sway by issuing the command sway from TTY.

$ sway

You can also sway with a greeter like greetd. In this case, to start sway session for the user, you might want to start a D-Bus session when the greetd session is started.

Contents of /etc/greetd/environments

# Launch Sway with a D-Bus server available, use: dbus-run-session -- sway

D-Bus is required for PipeWire and screensharing in Firefox and Chromium. Running with dbus-run-session is a convenience wrapper that will explicitly export the path of the session bus.

PipeWire and Screensharing

For audio playback, install PipeWire. The sway compositor has no involvement in audio playback.

For screen sharing, applications are split into two categories:

  • Those which use the native wayland protocol, wlr-screencopy
  • Those which use the API from Flatpak's xdg-desktop-portal (this portal is also used by native non-Flatpak applications).

Applications in the first group require no additional setup. Applications in the second group (which includes Firefox and Chromium) require setting up xdg portals in addition to PipeWire.

# apk add xdg-desktop-portal xdg-desktop-portal-wlr

Launch PipeWire with Sway. Use your service manager of choice, or add the following to sway config: 

 exec /usr/libexec/pipewire-launcher

If your are using automatic D-Bus activation, you also need to set DBus variables for the portal and screensharing features to work: 

exec dbus-update-activation-environment WAYLAND_DISPLAY XDG_CURRENT_DESKTOP=sway

Greetd

See greetd for an optional login manager.

Screen lock and suspend-to-RAM

If Elogind is not used, consider using powerctl.

Putting the system to sleep with elogind requires elevated privileges or additional configuration.

For details on configuring doas with elogind, see Elogind#Doas

To put the system to sleep after 600 seconds, use: 

exec swayidle -w timeout 600 'doas /bin/loginctl suspend'

loginctl suspend command will trigger the screenlock, as mentioned in the section Install elogind (optional) above.

Do not lock the screen if program is running in full screen: 

for_window [app_id="^.*"] inhibit_idle fullscreen

Elogind and swayidle

swayidle has integration with elogind and can handle before-sleep events.

If using swayidle before-sleep, there will be a race condition, so that when you resume the computer from suspend, the screen shows the contents of the unlocked screen for a second before showing the actual lock screen. This can be a privacy concern.

To solve this issue, do the following:

Create this file /etc/elogind/system-sleep/10-swaylock.sh, then add the following script to this file: 

#!/bin/sh
if [ "${1}" == "pre" ]; then
  touch /tmp/swaylock-sleep
  sleep 1
fi

Then set it to executable.

Later, once sway is installed, add the following line to sway config: 

exec touch /tmp/swaylock-sleep && inotifyd swaylock /tmp/swaylock-sleep

With this line, the screen will be promptly locked before suspend-to-RAM starts.

Brightness control

Controlling display backlight requires either the proper udev rules, or using some form of privilege escalation.

brightnessctl is a reliable alternative, although its default udev rules require too wide permissions (see #15409). You may need your own rules, or configure doas to allow running it as an unprivileged user.

Optionally enable brightnessctl service to restore brightness settings on reboot: 

rc-update add brightnessctl

Output scaling for high resolution displays

Without further configuration, program interfaces might be too small to use on high resolution displays.

Sway supports the per-display configuration of

  • fractional (e.g., 1.5x), and
  • integer scaling (e.g., 2x)

However, fractional scaling is discouraged due to both the performance impact and the blurry output it produces. In this case, where 1x scaling is too small and 2x scaling is too large, program-specific GTK/QT based scaling is recommended. See below.

To enable Sway scaling, the user can first preview different scaling factors with wdisplays package. Note the output name (eDP-1, LVDS-1) and try apply scaling factors such as 1 and 2. To make changes permanent, add below to ~/.config/sway/config. 

output <name> scale <factor>

To use toolkit scaling, use

# for GTK-based programs such as firefox and emacs: export GDK_DPI_SCALE=2 # for QT-based programs export QT_WAYLAND_FORCE_DPI="physical" # or if still too small, use a custom DPI export QT_WAYLAND_FORCE_DPI=192 # 2x scaling export QT_QPA_PLATFORM="wayland-egl"


Screenshots

A simple tool that works well under Wayland is Grimshot. Example keybindings: 

bindsym Print exec grimshot copy area
bindsym Shift+Print exec grimshot copy screen
bindsym Control+Print exec grimshot save area ~/Pictures/$(date +%d-%m-%Y-%H-%M-%S).png
bindsym Control+Shift+Print exec grimshot save screen ~/Pictures/$(date +%d-%m-%Y-%H-%M-%S).png

See the sway wiki's article for a list of screenshot tools.

Make clipboard content persistent

By default the clipboard content does not persist after terminating the program: you copy some text from Firefox and then exit Firefox, the copied text is also lost.

Install clipman from testing repo and add the following to sway config: 

exec wl-paste --type text/plain --watch clipman store --histpath="~/.local/state/clipman-primary.json"
bindsym $mod+h exec clipman pick --tool wofi --histpath="~/.local/state/clipman-primary.json"

Firefox picture-in-picture mode/floating windows

Add this to your sway config file (modify the numeric values to suit your needs and your display): 

for_window [app_id="firefox" title="^Picture-in-Picture$"] floating enable, move position 877 450, sticky enable, border none

Start with NumLock enabled

Add this to your sway config file: 

input type:keyboard xkb_numlock enabled

Change mouse cursor theme and size

Add to your sway config: 

seat seat0 xcursor_theme my_cursor_theme my_cursor_size

For example, set a mouse cursor, using GNOME Adwaita theme: 

seat seat0 xcursor_theme Adwaita 16

You can inspect their values with echo $XCURSOR_SIZE and echo $XCURSOR_THEME. If reloading your config does not result in change, try logging out and in.

Note: Wayland allows for client-side cursors. It is possible that applications do not evaluate the values of $XCURSOR_SIZE and $XCURSOR_THEME.

Custom keyboard layout

To use custom keyboard layout, just use 

input type:keyboard {
  xkb_file /path/to/my/custom/layout
}

Changing default application fonts

See Fontconfig

Troubleshooting

If you encounter any issues, try running sway -Vc /etc/sway/config. It will run sway with the default config file and set the output to be more verbose. It is generally a good idea to track your config files with git (when and if at all you use a remote repository for them, keep it private for security reasons).

To capture the sway error log in a file for troubleshooting, replace sway in your startup file by sway -d 2> ~/sway_error.log.

Alternately, you can also issue the below command from TTY.

$ sway -d 2> ~/sway_error.log

Video Driver Issues

After installing sway, while launching it for the first time, lack of proper video drivers causes various error messages such as:

  • "unable to create backend"
  • "Failed to create renderer"

Do install necessary drivers for your graphics card for sway to work.

Flatpaks

Main article: Flatpak

Due to their sandboxing, flatpaks require the use of a portal frontend (xdg-desktop-portal) and backends (such as xdg-desktop-portal-wlr, xdg-desktop-portal-gtk, xdg-desktop-portal-gnome) that implement the methods. When in doubt, install multiple backends. For more information on backends, see flatpak's page on the subject. In addition to the steps under the "Firefox Screensharing" section, it may also be necessary to launch additional backends in your Sway config file. Otherwise, you may run into GDBus errors as your flatpak fails to interface with the portal. This can cause issues such as with opening your file directories from a flatpak application.

After installing different backends, you might need to add the relevant backends to your sway config file similarly to in the "Firefox Screensharing" section above. For example, an autostart section of your sway config file may include: 

exec /usr/libexec/xdg-desktop-portal-gtk
exec /usr/libexec/xdg-desktop-portal-wlr
exec /usr/libexec/xdg-desktop-portal-gnome

This is only needed if they are not started automatically via other means.

Firefox (Flatpak) and/or GTK apps

Disappearing cursor

You may need to get an icon pack and possibly a theme from Pling store and set GTK_THEME environmental variable. Alternatively you can install a theme for all users (search Alpine Linux Packages for *-icon-theme) using apk add.

Missing file picker/cannot download

Go to about:config and set widget.use-xdg-desktop-portal.file-picker to 0.

Nvidia Issues

Main article: NVIDIA

As of Dec 31 2022, Nvidia still doesn't fully support Wayland. Therefore, the possible solutions are as outlined in the link, or setting your WLR_BACKENDS environmental variables to drm,libinput or x11 (add libinput here as well if you cannot use your mouse and keyboard after starting Sway). The latter also works for AMD/ATI cards (make sure to install libinput first).

See Also

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