Hi Thanks for your help and time. I really appreciate it.
> Sent: Thursday, June 03, 2021 at 3:03 AM > From: "Linux-Fan" <[email protected]> > To: [email protected] > Subject: Re: How do I permanently disable unattended downloads of > software/security updates? > > > Anyway, I suspect that the OP might find some useful information from > > this command: > > > > systemctl list-timers | grep apt Below is the output of systemctl list-timers | grep apt Thu 2021-06-03 20:29:30 GMT 9h left Thu 2021-06-03 09:18:00 GMT 1h 17min ago apt-daily.timer apt-daily.service Fri 2021-06-04 06:51:16 GMT 20h left Thu 2021-06-03 09:18:00 GMT 1h 17min ago apt-daily-upgrade.timer apt-daily-upgrade.service > > I am leaning towards the "DE explanation" -- that the upgrades are not > caused by APT's own mechanisms but rather triggered by some DE through > opaque means not visible in cron or systemd timers. I am not sure how I > would go about identifying the cause there, except for checking the GUI > configuration that all related options are turned off? > One of the posters provided me a link to the post in Unix StackExchange: https://unix.stackexchange.com/a/594287 and I have followed the instructions to disable PackageKit. By the way, when I did a fresh minimal install of Debian Buster without installing the full Gnome DE about two years ago, I also installed the following packages: xorg gnome-core gnome-tweak-tool synaptic gedit gdebi file-roller
