Stella Ashburne wrote: > As you can see from the screenshot, my OS has surreptitiously downloaded > software/security updates without my manual intervention. This behavior is > not what I like and it's the subject of my original post. > > > > > The devil is in the details, as they say. > > "sudo apt upgrade" shows that it does not need to download anything, > > because: > > > > > > username@localhost:~$ sudo apt upgrade > > ... > > > > Need to get 0 B/20.2 MB of archives. > > > Exactly. The notification about software updates being available was the > first thing that popped up on my OS (see screenshot: https://ibb.co/5xP7r5t). > This was confirmed by the message "Need to get 0 B/20.2 MB of archives". > > > I'm curious what will be shown in this configuration by: > > > > apt-config dump | grep Periodic > > > One kind person has already asked me for the output of > > apt-config dump | grep -i APT::Periodic > > Below is the output of the above command: > > APT::Periodic ""; > APT::Periodic::Download-Upgradeable-Packages "0"; > APT::Periodic::Unattended-Upgrade "0";
This really looks like something being done by your desktop system rather than at the OS level. Fire up dconf-editor, look at org.gnome.software, and see if "download-updates" is checked. If so, uncheck it. -dsr-

