Using Wayland

Introduction

The goal of this page is to relate experiences using Wayland working implementations, software replacement from the X11 world and so on.

Duck: please note I'm a former AwesomeWM user thus I'm not looking into major desktop implementations like GNOME or KDE but I'm trying to mix interesting pieces to fit my needs better. You can have a look at my configuration in my repository (Ansible rules).

Compositors

There's many Wayland compositor projects around but a lot are very experimental and many even already abandoned.

Working or prospective compositors follows.

Sway

(updated for 1.5)

Status: very active project, created a wlroots framework to share with other compositors, version 1.1+ is usable with some glitches, seamless xwayland integration

Packaging: in Debian with wlroots and swaybg

Notable problems:

• damage tracking issues with xwayland (ugly but not not annoying with most applications)
• games under Wine may hang if run fullscreen and switching workspace (but windowed using the full screen size often works; using a virtual desktop is also an option which seems to always work)
• rendering issues (most glitches do not have any real impact; also less problems since 1.5)
• dialogs hidden under their parent (annoying with specific applications relying on child windows but most don't and there is a workaround)

Tools:

• swaybar (display workspaces, current window title, tray, time, CPU infos…)
  • integrated with sway, can use various commands to display stuff (i3status works fine and is packaged in Debian)
  • Status: works fine but tray support is limited (icon may be missing, contextual menu not working, WIP)
• Waybar (more fancy bar)
  • packaged in Debian
  • Status: tested only a short time, tray working better than swaybar but contextual menu currently displayed in the middle of the screen (should be fixed if built with gtk-layer-shell but disabled in Debian for some reason and manual build failed with this option)
• swaylock (lock screen)
  • packaged in Debian
  • Status: works fine
• swayidle (run custom actions on idle and back from idle)
  • packaged in Debian
  • Status: works fine and handle various events
• remote control (not network transparency)
  • integrated in sway
  • Status: finished, untested (RDP backend replaced, need to have a deeper look)

Way Cooler (spiritual successor of AwesomeWM)

Status: was being rewritten on top of wlroots but was unfortunately abandoned at the beginning of 2020. I need some time to cope with the sadness and remove this entry.

Tools

Display Manager

• lightdm:
  • packaged in Debian
  • Status: works fine to run Wayland sessions but runs on X11 itself

Application Menu Runner

• wofi:
  • packaged in Debian
  • Status: works fine
  • Usage: wofi --term=x-terminal-emulator
• j4-dmenu-desktop + bemenu:
  • j4-dmenu-desktop only is packaged in Debian
  • Status: works fine
  • Usage: j4-dmenu-desktop --dmenu='bemenu --list 10 --wrap --ignorecase --no-overlap --prompt "Run:" --fn "pango:DejaVu Sans Mono 12"' --term=x-terminal-emulator
• dmenu:
  • packaged in Debian (suckless-tools)
  • Status: works fine but impossible to switch back to it if you loose focus (need to kill it in a term)
  • Usage: dmenu_path | dmenu -p "Run:" -l 10 | xargs swaymsg exec

Notifications / Screen Overlay

• mako (notifications):
  • packaged in Debian (mako-notifier)
  • works fine
• wob (progressbar)
  • packaged in Debian
  • Status: works fine
• xfce4-notifyd (notifications):
  • packaged in Debian
  • Status: works fine but display in the middle of the screen thus not very practical

Input Method

• fcitx4:
  • packaged in Debian
  • Status: untouched config from X11 works but completion menu may not be displayed (it works on one machine and not another but I could not figure out why yet); running fcitx-autostart fixed it (you may need to ``killall fcitx`` first)
• fcitx5:
  • has Wayland support
  • only the core is packaged in Debian
  • Status: i was not able to make it work and quit
• ibus:
  • packaged in Debian
  • Status: ibus-wayland is available and was switched to using a newer version of the wayland input protocol (see Debian#905001 and linked upstream BR) but Sway use an even newer version (and this one only); anyway these changes are mostly untested so I would not have too much hopes; without this plugin I was not able to make completion work at all, even when forcing the engine on the command-line

So here are the various protocols:

• wl_input_method: seems it was an old draft added to Weston but not part of the Wayland protocols
• zwp_input_method_v1: current Wayland unstable protocol, implemented by Weston, ibus-wayland and fcitx5
• zwp_input_method_v2: WIP to be integrated in Wayland unstable protocols, implemented by Wlroots/Sway

Terminal

• termite: (native Wayland support)
  • not packaged in Debian and requires a patched libvte
  • Status: works fine
• xfce4-terminal:
  • packaged in Debian
  • Status: works fine
• terminator:
  • packaged in Debian
  • Status: works fine (with Sway >=1.1)

Screen Capture

• grim: (screenshot)
  • packaged in Debian
  • Status: works fine

Screen Brightness

• light:
  • packaged in Debian
  • Status: works fine
• brightnessctl:
  • packaged in Debian (brightness-udev is needed to be usable as non-root)
  • Status: works fine

Browser

• firefox:
  • packaged in Debian
  • Status: works fine on XWayland, seems to be ok so far on Wayland but officially it is still WIP
• chromium:
  • packaged in Debian
  • Status: works fine on XWayland, native Wayland support is WIP

Misc

• netevent (Input-Event device cloning utility)
  • use case: if you wish to control several machines with the same keyboard and mouse, like with a KVM switch, then you can use devices from one to control others and switch machine using a special key
  • not packaged in Debian but materials provided upstream (needs this update though)
  • Status: works fine

Workarounds

GUI Frameworks

GTK uses GDK to draw and support for Wayland exists but a few things are missing thus it is not enabled by default. Other frameworks do not always enable Wayland by default depending on distro and version.

Currently this works fine (in ~/.xsessionrc):

# ensure GUI frameworks use Wayland
#export GDK_BACKEND=wayland   # breaks a few apps or behaviors (Firefox, Signal…)
export CLUTTER_BACKEND=wayland
export QT_QPA_PLATFORM=wayland-egl
# breaks a few apps or behaviors (Unity…)
#export SDL_VIDEODRIVER=wayland
export ELM_DISPLAY=wl

Java Applications

Set _JAVA_AWT_WM_NONREPARENTING=1 in your environment (in ~/.xsessionrc) to fix behavior with menus and always on top issues (and maybe others).

Readings

• Wayland (Arch Linux documentation)
• With Vulkan 1.1 It's Technically Possible To Write A Pure Wayland Compositor