I can confirm that clicking the refresh button in the title bar in
gnome-software's update tab triggers packagekit to write
/var/lib/PackageKit/prepared-update, which in turn makes the shutdown
dialog offer to install updates before shutting down.
A few observations:
- contrary to what's stated in comment #2, I observe that ticking the
checkbox results in updates being actually installed at shutdown
(although I don't know what happens with updates that require user
interaction)
- gnome-software's updates tab says the software is up-to-date, but
there are actually 5 package updates available, and they are listed in
/var/lib/PackageKit/prepared-update
- during my tests in a bionic VM, I also observed once that prepared-
update file being created without interaction with gnome-software: I
simply ran "sudo apt update" in a terminal window, then requested
shutdown, and the dialog offered to install updates, so something else
also triggered packagekit
** Changed in: gnome-software (Ubuntu)
Status: New => Confirmed
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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:
Confirmed
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
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