Bug#1108289: gnome-software: System-installed Flatpak apps not shown in GNOME Software during RDP sessions

[preindl]

Package: gnome-software
Version: 48.2-1
Severity: normal
X-Debbugs-Cc: preindl at dnet.it


When running a GNOME Wayland session via RDP (gnome-remote-desktop via remove login), GNOME Software does not show system-installed Flatpak apps. Apps are useable in Gnome, are present in /var/lib/flatpak, functional via CLI, and AppStream data is updated.

The Flatpak plugin logs:
  plugin 'flatpak' failed to list apps: Unsupported query

XDG_SESSION_TYPE is 'wayland', but loginctl shows Type=unspecified. This seems to prevent proper plugin behavior.

Expected behavior: same as local session: list flatpak apps in gnome-software.


-- System Information:
Debian Release: 13.0
  APT prefers testing-security
  APT policy: (500, 'testing-security'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.32-amd64 (SMP w/32 CPU threads; PREEMPT)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages gnome-software depends on:
ii  dconf-gsettings-backend [gsettings-backend]            0.40.0-5
ii  gnome-software-common                                  48.2-1
ii  gnome-software-plugin-deb [gnome-software-plugin]      48.2-1
ii  gnome-software-plugin-flatpak [gnome-software-plugin]  48.2-1
ii  gsettings-desktop-schemas                              48.0-1
ii  libadwaita-1-0                                         1.7.4-2
ii  libappstream5                                          1.0.5-1
ii  libc6                                                  2.41-9
ii  libgdk-pixbuf-2.0-0                                    2.42.12+dfsg-3
ii  libglib2.0-0t64                                        2.84.3-1
ii  libgtk-4-1                                             4.18.6+ds-2
ii  libgudev-1.0-0                                         238-6
ii  libjson-glib-1.0-0                                     1.10.6+ds-2
ii  libmalcontent-0-0                                      0.13.0-2
ii  libpackagekit-glib2-18                                 1.3.1-1
ii  libpango-1.0-0                                         1.56.3-1
ii  libpolkit-gobject-1-0                                  126-2
ii  libsoup-3.0-0                                          3.6.5-1
ii  libxmlb2                                               0.3.22-1

Versions of packages gnome-software recommends:
ii  gnome-software-plugin-deb    48.2-1
ii  gnome-software-plugin-fwupd  48.2-1

Versions of packages gnome-software suggests:
ii  gnome-software-plugin-flatpak  48.2-1
pn  gnome-software-plugin-snap     <none>

-- no debconf information