I don't remember what I did in the past, but I was able to reproduce the dialog with the following steps: 1. Upgrade fully and reboot the system. 2. Downgraded a package: sudo apt install unattended-upgrades=1.1ubuntu1 3. Disabled u-u: sudo dpkg-reconfigure unattended-upgrades 4. Opened Gnome Software (Ubuntu Software) 5. Clicked on Updates tab, then on the refresh/reload icon in the upper left corner. Gnome Software printed "Looking for updates", then misleadingly that "Software is up to date" despite u-u is still not upgraded. 6. The prepared-update file is now present: $ ls -alh /var/lib/PackageKit/prepared-update -rw-r--r-- 1 root root 93 srp 18 12:24 /var/lib/PackageKit/prepared-update 7. Clicking on Shutdown now offers installing updates which is executed, too. Upon next login a report is shown about installed updates.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-software in Ubuntu. https://bugs.launchpad.net/bugs/1775226 Title: Gnome Software offers installation of updates on shutdown independently from update-manager and unattended-upgrades Status in gnome-software package in Ubuntu: New Bug description: In Ubuntu the GUI for upgrading packages is update-manager allowing debconf questions to be answered when needed and Ubuntu also offers unattended-upgrades for upgrading packages in the background and it keeps back packages from upgrading when configuration-file changes would need user interaction during the upgrade. Unattended-upgrades can be configured to perform upgrades during system shutdown. Gnome Software in Bionic started offering performing upgrades during shutdown using PackageKit independently from update-manager and unattended-upgrades without offering all of the features of either one. Unless there is a decision to fully switch to Gnome Software I suggest disabling the "Install pending software updates" on the shutdown screen to avoid confusing users. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1775226/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
