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flatpak / xdg-desktop-portal-gtk

Gtk implementation of xdg-desktop-portal
GNU Lesser General Public License v2.1
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File Chooser does not open for Flatpak Applications #485

Open Dutt-A opened 3 months ago

Dutt-A commented 3 months ago

Hello,

I'm on a mostly fresh install of Fedora Sway 40, and whenever I hit a button that should result in the file chooser opening up (like I try to Download something in Ungoogled Chromium or set my library in Steam), nothing happens. I've gotten stuck trying to look at fixes and debug it myself, so I was wondering if I could get some help.

system information

OS: Fedora Linux 40 (Sway) x86_64 
Kernel: 6.9.9-200.fc40.x86_64

sway information

Name         : sway
Version      : 1.9
Release      : 1.fc40
Architecture : x86_64
Size         : 861 k
Source       : sway-1.9-1.fc40.src.rpm
Repository   : @System
From repo    : anaconda
Summary      : i3-compatible window manager for Wayland
URL          : https://github.com/swaywm/sway

xdg portal package information

Name         : xdg-desktop-portal-wlr
Version      : 0.7.1
Release      : 1.fc40
Architecture : x86_64
Size         : 111 k
Source       : xdg-desktop-portal-wlr-0.7.1-1.fc40.src.rpm
Repository   : @System
From repo    : anaconda

Name         : xdg-desktop-portal
Version      : 1.18.4
Release      : 1.fc40
Architecture : i686
Size         : 488 k
Source       : xdg-desktop-portal-1.18.4-1.fc40.src.rpm
Repository   : updates
Summary      : Portal frontend service to flatpak
URL          : https://github.com/flatpak/xdg-desktop-portal/

Name         : xdg-desktop-portal
Version      : 1.18.4
Release      : 1.fc40
Architecture : x86_64
Size         : 2.3 M
Source       : xdg-desktop-portal-1.18.4-1.fc40.src.rpm
Repository   : @System
From repo    : updates
Summary      : Portal frontend service to flatpak
URL          : https://github.com/flatpak/xdg-desktop-portal/

The last thing I tried to do to fix this was to reinstall Fedora Sway spin while keeping my home directory, but nothing got fixed. On my last install I was trying to get my gtk and qt6 themes to work together with kvantum, and it may be possible along the way that I deleted something important in the ~/home/username directory. (I recall deleting ~/.local/gtk-2.0 and ~/.local/gtk-3.0.

I also have the following files in /usr/share/xdg-desktop-portal:

/usr/share/xdg-desktop-portal/sway-portals

[preferred]
# Use xdg-desktop-portal-gtk for every portal interface...
default=gtk
# ... except for the ScreenCast, Screenshot and Secret
org.freedesktop.impl.portal.ScreenCast=wlr
org.freedesktop.impl.portal.Screenshot=wlr
org.freedesktop.impl.portal.Secret=gnome-keyring

/usr/share/xdg-desktop-portal/wlroots-portals

[preferred]
# Use xdg-desktop-portal-gtk for every portal interface...
default=gtk
# ... except for the ScreenCast and Screenshot
org.freedesktop.impl.portal.ScreenCast=wlr
org.freedesktop.impl.portal.Screenshot=wlr

/usr/share/xdg-desktop-portal/portals/gnome-keyring.portal

[portal]
DBusName=org.freedesktop.secrets
Interfaces=org.freedesktop.impl.portal.Secret
UseIn=gnome

/usr/share/xdg-desktop-portal/portals/gtk.portal

[portal]
DBusName=org.freedesktop.impl.portal.desktop.gtk
Interfaces=org.freedesktop.impl.portal.FileChooser;org.freedesktop.impl.portal.AppChooser;org.freedesktop.impl.portal.Print;org.freedesktop.impl.portal.Notification;org.freedesktop.impl.portal.Inhibit;org.freedesktop.impl.portal.Access;org.freedesktop.impl.portal.Account;org.freedesktop.impl.portal.Email;org.freedesktop.impl.portal.DynamicLauncher;org.freedesktop.impl.portal.Settings;
UseIn=gnome

/usr/share/xdg-desktop-portal/portals/wlr.portal

[portal]
DBusName=org.freedesktop.impl.portal.desktop.wlr
Interfaces=org.freedesktop.impl.portal.Screenshot;org.freedesktop.impl.portal.ScreenCast;
UseIn=wlroots;sway;Wayfire;river;phosh;Hyprland;

Any debugging tips or hints for where I should look next would be much appreciated. Thanks.

(Note: I posted this in originally in https://github.com/swaywm/sway/issues/8260, but I then noticed that 1 or 2 xdg-related issues got redirected to here, naturally.)

Another note is that the accessing the system print dialog from Flatpak Ungoogled Chromium actually does work, though I have no printers configured.

TingPing commented 3 months ago

You can get some logs with /usr/libexec/xdg-desktop-portal-gtk --replace --verbose, same for the main portal.

Dutt-A commented 3 months ago

Very interesting...

So using this method, I first typed your command into console. Then I went onto DuckDuckGo and searched up some images of fat dachsunds on flatpak ungoogled-chromium, and the GTK file chooser worked! I was able to download a fat dachsund with the GTK file chooser.

But as soon as I tried to download another fat dachsund without /usr/libexec/xdg-desktop-portal-gtk --replace --verbose running, I could not download the fat dachsund because the GTK file chooser didn't open. Other than that, the file chooser seems to spit out some warnings,

(xdg-desktop-portal-gtk:75931): xdg-desktop-portal-gtk-WARNING **: 22:56:13.661: Unhandled parent window type 

(xdg-desktop-portal-gtk:75931): xdg-desktop-portal-gtk-WARNING **: 22:56:13.661: Failed to associate portal window with parent window 

(xdg-desktop-portal-gtk:75931): xdg-desktop-portal-gtk-WARNING **: 22:56:18.889: Backend call failed: Cannot invoke method; proxy is for the well-known name org.freedesktop.ScreenSaver without an owner, and proxy was constructed with the G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START flag

(xdg-desktop-portal-gtk:75931): xdg-desktop-portal-gtk-WARNING **: 22:56:49.217: Backend call failed: Cannot invoke method; proxy is for the well-known name org.freedesktop.ScreenSaver without an owner, and proxy was constructed with the G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START flag

(xdg-desktop-portal-gtk:75931): xdg-desktop-portal-gtk-WARNING **: 22:57:19.536: Backend call failed: Cannot invoke method; proxy is for the well-known name org.freedesktop.ScreenSaver without an owner, and proxy was constructed with the G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START flag

(xdg-desktop-portal-gtk:75931): xdg-desktop-portal-gtk-WARNING **: 22:57:49.845: Backend call failed: Cannot invoke method; proxy is for the well-known name org.freedesktop.ScreenSaver without an owner, and proxy was constructed with the G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START flag

(xdg-desktop-portal-gtk:75931): xdg-desktop-portal-gtk-WARNING **: 22:58:09.533: Backend call failed: Cannot invoke method; proxy is for the well-known name org.freedesktop.ScreenSaver without an owner, and proxy was constructed with the G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START flag

(xdg-desktop-portal-gtk:75931): xdg-desktop-portal-gtk-WARNING **: 22:58:39.856: Backend call failed: Cannot invoke method; proxy is for the well-known name org.freedesktop.ScreenSaver without an owner, and proxy was constructed with the G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START flag

But that itself was enough to get to the crux of the bug! Something probably isn't running that should be in the background!

Dutt-A commented 3 months ago

It looks like xdg-desktop-portal-gtk.service is enabled, but it keeps failing upon startup, thereby not running when it is called by applications later on

$ systemctl --user status xdg-desktop-portal-gtk | cat
× xdg-desktop-portal-gtk.service - Portal service (GTK/GNOME implementation)
     Loaded: loaded (/usr/lib/systemd/user/xdg-desktop-portal-gtk.service; static)
    Drop-In: /usr/lib/systemd/user/service.d
             └─10-timeout-abort.conf
     Active: failed (Result: exit-code) since Mon 2024-07-22 08:09:19 EDT; 13min ago
    Process: 1439 ExecStart=/usr/libexec/xdg-desktop-portal-gtk (code=exited, status=1/FAILURE)
   Main PID: 1439 (code=exited, status=1/FAILURE)
        CPU: 15ms

Jul 22 08:09:19 fedora systemd[1280]: Failed to start xdg-desktop-portal-gtk.service - Portal service (GTK/GNOME implementation).
Jul 22 08:09:19 fedora systemd[1280]: xdg-desktop-portal-gtk.service: Start request repeated too quickly.
Jul 22 08:09:19 fedora systemd[1280]: xdg-desktop-portal-gtk.service: Failed with result 'exit-code'.
Jul 22 08:09:19 fedora systemd[1280]: Failed to start xdg-desktop-portal-gtk.service - Portal service (GTK/GNOME implementation).
Jul 22 08:09:19 fedora systemd[1280]: xdg-desktop-portal-gtk.service: Start request repeated too quickly.
Jul 22 08:09:19 fedora systemd[1280]: xdg-desktop-portal-gtk.service: Failed with result 'exit-code'.
Jul 22 08:09:19 fedora systemd[1280]: Failed to start xdg-desktop-portal-gtk.service - Portal service (GTK/GNOME implementation).
Jul 22 08:09:19 fedora systemd[1280]: xdg-desktop-portal-gtk.service: Start request repeated too quickly.
Jul 22 08:09:19 fedora systemd[1280]: xdg-desktop-portal-gtk.service: Failed with result 'exit-code'.
Jul 22 08:09:19 fedora systemd[1280]: Failed to start xdg-desktop-portal-gtk.service - Portal service (GTK/GNOME implementation).
TingPing commented 3 months ago

A possibility is xdg-desktop-portal-gtk it is executed in a different environment than your shell, so could behave different. You may need to import some env vars.

Dutt-A commented 3 months ago

I have another idea for what is going on. After login, the message in systemctl looks like this:

systemctl --user status xdg-desktop-portal-gtk | cat
× xdg-desktop-portal-gtk.service - Portal service (GTK/GNOME implementation)
     Loaded: loaded (/usr/lib/systemd/user/xdg-desktop-portal-gtk.service; static)
    Drop-In: /usr/lib/systemd/user/service.d
             └─10-timeout-abort.conf
     Active: failed (Result: exit-code) since Mon 2024-07-22 15:21:05 EDT; 9min ago
    Process: 1816 ExecStart=/usr/libexec/xdg-desktop-portal-gtk (code=exited, status=1/FAILURE)
   Main PID: 1816 (code=exited, status=1/FAILURE)
        CPU: 15ms

Jul 22 15:21:05 fedora systemd[1275]: Starting xdg-desktop-portal-gtk.service - Portal service (GTK/GNOME implementation)...
Jul 22 15:21:05 fedora xdg-desktop-por[1816]: cannot open display: 
Jul 22 15:21:05 fedora systemd[1275]: xdg-desktop-portal-gtk.service: Main process exited, code=exited, status=1/FAILURE
Jul 22 15:21:05 fedora systemd[1275]: xdg-desktop-portal-gtk.service: Failed with result 'exit-code'.
Jul 22 15:21:05 fedora systemd[1275]: Failed to start xdg-desktop-portal-gtk.service - Portal service (GTK/GNOME implementation).

I found that another user here was getting the same error message but managed to solve it by installing lightdm (a login manager).

Using a login manager like lightdm will ensure that both the display server and xdg-desktop-portal-gtk are started at the same time. The issue is that without a login manager, what is going on is that xdg-desktop-portal-gtk is trying to call display without sway being started first, which creates the issue.

The bandaid solution is then to plop exec /usr/libexec/xdg-desktop-portal-gtk into my sway config file so the portal is started when sway is started (This is what I'm doing for now).

But ideally, either xdg-desktop-portal-gtk should always be started after the display server is started or xdg-desktop-portal-gtk should never call screen until the display server is started.