I think the problems with Gnome Software is being worked on and is still not functioning correctly. Yeasterday I checked it out, especially the Installed portion and all seemd to be ok. Now, after reading @lah7 post I checked again and it never finished just produce a blank screen… I had updated and upgraded my computer minutes prior
syslog entries follow
Apr 28 10:08:45 Dell-1749 org.gnome.Software[2627]: (gnome-software:7894): GsPlugin-WARNING **: Failed to get changelog for ubuntu-mate-desktop version 1.154 from changelogs.ubuntu.com: Cannot connect to destination
Apr 28 10:08:45 Dell-1749 org.freedesktop.Notifications[2627]: ** (mate-notification-daemon:14169): WARNING **: Couldn't connect to accessibility bus: Failed to connect to socket /tmp/dbus-0Fa9o5rU99: Connection refused
Apr 28 10:08:48 Dell-1749 dbus[782]: [system] Activating service name='org.freedesktop.fwupd' (using servicehelper)
Apr 28 10:08:49 Dell-1749 org.freedesktop.fwupd[782]: (fwupd:14187): Fu-WARNING **: Failed to coldplug: UEFI firmware updating not supported
Apr 28 10:08:49 Dell-1749 dbus[782]: [system] Successfully activated service 'org.freedesktop.fwupd'
I added these to the existing bug