The behaviour is indeed Debian(&Ubuntu) specific, it's made by that utility https://manpages.debian.org/testing/debhelper/dh_installsystemduser.1.en.html
The command is automatically called with the compat version 12, which is used since Ubuntu 19.10 I will change the package to opt out from the auto-enabling ** Changed in: rygel (Ubuntu) Status: Confirmed => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1848692 Title: Rygel autostarts on Ubuntu 19.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rygel/+bug/1848692/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs