Bug#1035031: gnome-software: Manually checking for updates immediately finishes and does nothing

[asciiwolf at seznam.cz]

Package: gnome-software
Version: 43.4-1

Clean Debian testing (amd64) system installed in a vm using latest iso. When opening GNOME Software, switching to the "Updates" tab and clicking the spinner button in header to check for new updates, the check immediately finishes (after a second or two) and does not seem to actually fetch any new update info. I am including a verbose gnome-software log from after clicking the button.

This part of the log may be related:
app invalid as no summary system/package/*/debian.www.debian-12/*

P.S. I have noticed the cdrom error in the log, however it looks like that disabling the cdrom source in /etc/apt/sources.list did not help.

-- System Information:
Debian Release: 12.0
  APT prefers testing-security
  APT policy: (500, 'testing-security'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 6.1.0-7-amd64 (SMP w/12 CPU threads; PREEMPT)
Locale: LANG=cs_CZ.UTF-8, LC_CTYPE=cs_CZ.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  appstream                                    0.16.1-1
ii  apt-config-icons                             0.16.1-1
ii  dconf-gsettings-backend [gsettings-backend]  0.40.0-4
ii  gnome-software-common                        43.4-1
ii  gsettings-desktop-schemas                    43.0-1
ii  libadwaita-1-0                               1.2.2-1
ii  libappstream4                                0.16.1-1
ii  libc6                                        2.36-9
ii  libcairo2                                    1.16.0-7
ii  libfwupd2                                    1.8.12-2
ii  libgdk-pixbuf-2.0-0                          2.42.10+dfsg-1+b1
ii  libglib2.0-0                                 2.74.6-2
ii  libgtk-4-1                                   4.8.3+ds-2
ii  libgtk3-perl                                 0.038-3
ii  libgudev-1.0-0                               237-2
ii  libjson-glib-1.0-0                           1.6.6-1
ii  libmalcontent-0-0                            0.11.0-4
ii  libpackagekit-glib2-18                       1.2.6-3
ii  libpango-1.0-0                               1.50.12+ds-1
ii  libpolkit-gobject-1-0                        122-3
ii  libsoup-3.0-0                                3.2.2-2
ii  libxmlb2                                     0.3.10-2
ii  packagekit                                   1.2.6-3
ii  software-properties-gtk                      0.99.30-4

Versions of packages gnome-software recommends:
ii  fwupd  1.8.12-2

Versions of packages gnome-software suggests:
pn  apt-config-icons-hidpi         <none>
pn  gnome-software-plugin-flatpak  <none>
pn  gnome-software-plugin-snap     <none>

-- no debconf information
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