I have observed that in a fully up-to-date disco VM. gnome-software would display a loading screen forever. After rebooting the VM, however, it loaded instantly. Here is the relevant bits from journalctl from today:
ene 14 07:27:50 discovm gnome-software[3787]: plugin appstream took 1,6 seconds to do setup ene 14 07:27:51 discovm gnome-software[3787]: enabled plugins: desktop-categories, fwupd, os-release, packagekit, packagekit-local, packagekit-offline, packagekit-proxy, packagekit-refine-repos, packagekit-refresh, packagekit-upgrade, packagekit-url-to-app, shell-extensions, ubuntuone, appstream, desktop-menu-path, hardcoded-blacklist, hardcoded-featured, hardcoded-popular, modalias, odrs, packagekit-refine, rewrite-resource, steam, packagekit-history, provenance, snap, systemd-updates, generic-updates, provenance-license, icons, key-colors, key-colors-metadata ene 14 07:27:51 discovm gnome-software[3787]: disabled plugins: dpkg, dummy, repos, epiphany ene 14 07:27:51 discovm dbus-daemon[555]: [system] Activating via systemd: service name='org.freedesktop.fwupd' unit='fwupd.service' requested by ':1.697' (uid=1000 pid=3787 comm="/usr/bin/gnome-software --gapplication-service " label="unconfined") ene 14 07:27:59 discovm gnome-software[3787]: failed to rescan: No valid root node specified ene 14 07:27:59 discovm gnome-software[3787]: failed to rescan: No valid root node specified ene 14 07:28:13 discovm gnome-software[3787]: ignoring non-installed app GsApp: [0x7fa7240d8ea0] ene 14 07:28:13 discovm gnome-software[3787]: ignoring non-installed app GsApp: [0x7fa72410a950] ene 14 07:28:13 discovm gnome-software[3787]: ignoring non-installed app GsApp: [0x7fa7241142b0] ene 14 07:29:45 discovm dbus-daemon[526]: [system] Activating via systemd: service name='org.freedesktop.fwupd' unit='fwupd.service' requested by ':1.338' (uid=1000 pid=1779 comm="gnome-software " label="unconfined") ene 14 11:05:23 discovm gnome-software-service.desktop[2154]: Unable to acquire bus name 'org.gnome.Software' ene 14 11:05:38 discovm dbus-daemon[526]: [system] Activating via systemd: service name='org.freedesktop.PackageKit' unit='packagekit.service' requested by ':1.338' (uid=1000 pid=1779 comm="gnome-software " label="unconfined") ene 14 11:09:35 discovm dbus-daemon[555]: [system] Activating via systemd: service name='org.freedesktop.fwupd' unit='fwupd.service' requested by ':1.141' (uid=1000 pid=1536 comm="gnome-software " label="unconfined") ene 14 11:10:04 discovm gnome-software-service.desktop[1934]: Unable to acquire bus name 'org.gnome.Software' ** Changed in: gnome-software (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1811577 Title: gnome-software or ubuntu software does not load the software To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1811577/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs