This repository has no description
desktops.sway: export XDG_SESSION_TYPE=wayland to user services
Firefox started from the systemd user manager (firefox.service) only got
DISPLAY but not XDG_SESSION_TYPE. With DISPLAY set and XDG_SESSION_TYPE
unset, its WebRTC capturer takes the X11/XWayland screencast path, which
captures a black screen under sway. Exporting XDG_SESSION_TYPE=wayland
makes it use the PipeWire portal instead, fixing screen sharing.
Assisted-by: Claude Code (claude-opus-4-8[1m])
author
lassulus
date
(Jun 6, 2026, 7:44 PM CEST)
commit
4fa472e4
4fa472e4397b3349a23863add1fbcda2eed09a2f
parent
e2ee9d41
e2ee9d418d82ff7dbd41977236f2b169b4e5286a
+6
-1
+6
-1
2configs/desktops/sway/default.nix
+6
-1
2configs/desktops/sway/default.nix
···
428
428
# theme and env specific stuff
429
429
exec_always ${pkgs.writers.writeDash "dbus-sway-environment" ''
430
430
set -efux
431
-
dbus-update-activation-environment --systemd DISPLAY WAYLAND_DISPLAY SWAYSOCK XDG_CURRENT_DESKTOP=sway
431
+
# XDG_SESSION_TYPE=wayland must be exported here: with DISPLAY set but
432
+
# XDG_SESSION_TYPE unset, Firefox (and other apps) started from the systemd
433
+
# user manager pick the X11/XWayland screencast path, which captures a black
434
+
# screen under sway. Setting it explicitly makes them use the PipeWire portal.
435
+
dbus-update-activation-environment --systemd DISPLAY WAYLAND_DISPLAY SWAYSOCK XDG_CURRENT_DESKTOP=sway XDG_SESSION_TYPE=wayland
436
+
systemctl --user set-environment XDG_SESSION_TYPE=wayland
432
437
systemctl --user import-environment DISPLAY WAYLAND_DISPLAY SWAYSOCK XDG_CURRENT_DESKTOP
433
438
systemctl --user start --no-block sway-session.target
434
439
systemctl --user stop xdg-desktop-portal xdg-desktop-portal-wlr