Firefox not finding org.freedesktop.portal.Settings

[Arxcis]

Hi.

• I am on a completely fresh install of Arch Linux + Sway.

• I followed this guide to install Arch https://www.youtube.com/watch?v=PQgyW10xD8s from DistroTube

• After completing the guide, I installed the following:

  pacman -S sway alacritty
  pacman -S flatpak xdg-desktop-portal-wlr wireplumber
  pacman -S wofi

• After rebooting I launched into sway by running:

  sway
  flatpak install firefox
  wofi --show drun (then select firefox from the launcher)

• Firefox opens but does give warnings in the command-line that it cannot find portals and it. Example:

  (firefox: 2) Gdk-WARNING: Failed to read portal settings: GDBus.Error:org.freedesktop.Dbus.Error.UnknownMethod:
  No such interface ?org.freedesktop.portal.Settings? on object at path /org/freedesktop/portal/desktop

  This is apparent, because dark-theme is not correctly loaded from settings, and filechooser-dialog does not work, when xdg-desktop-portal flag is enabled in firefox about:config.

• When I do systemctl --user I have the following services listed:

  dbus.service                      loaded active running
  flatpak-session-helper.service   loaded active running
  pipewire.service                     loaded active running
  wireplumber.service                     loaded active running
  xdg-desktop-portal-wlr.service     loaded active running
  xdg-desktop-portal.service     loaded active running
  xdg-document-portal.service     loaded active running
  xdg-permission-store.service    loaded active running

Everything looks good to me. Where am I wrong?

[emersion]

Closing because this isn't an xdpw bug, it doesn't provide org.freedesktop.portal.Settings. xdg-desktop-portal-gtk is supposed to I think?

[Arxcis]

Closing because this isn't an xdpw bug, it doesn't provide org.freedesktop.portal.Settings. xdg-desktop-portal-gtk is supposed to I think?

Alright. Thank you for a very quick answer @emersion :pray:

So when starting on a fresh system, Am I supposed to install multiple xdg-desktop-portal-backends to get support for all the portals? Do they play nice together? Could I do:

sudo pacman -S\ 
  xdg-desktop-portal-wlr\ 
  xdg-desktop-portal-gtk\
  xdg-desktop-portal-gnome\
  xdg-desktop-portal-kde

And it would work ok? Is this what I am supposed to do? What happens when multiple backends provide implementation for the same portal? Which one is prioritized?

[emersion]

Yes, installing multiple backends at the same time should work fine. For wlroots-based compositors, you'll probably need -wlr and -gtk only.

Backends a prioritized depending on XDG_CURRENT_DESKTOP. As last resort, an arbitrary backend is picked.

[Arxcis]

Yes, installing multiple backends at the same time should work fine. For wlroots-based compositors, you'll probably need -wlr and -gtk only.

I did not know about this. Thank you for enlightening me. Do you by any chance have a link to a resource where I can read more about it? I found it difficult to search for this topic.

Backends a prioritized depending on XDG_CURRENT_DESKTOP. As last resort, an arbitrary backend is picked.

OK. I installed xdg-desktop-portal-gtk (in addition to the already installed xdg-desktop-portal-wlr) and set XDG_CURRENT_DESKTOP=sway in $HOME/.bashrc.

Now the warnings are gone in Firefox :+1: