It was puzzling indeed, but now I have a reproduction step. $ sudo apt update -> no warning
$ sudo apt upgrade -> to install something to invoke the rsyslog trigger. Processing triggers for rsyslog (8.2312.0-3ubuntu3) ... Warning: The unit file, source configuration file or drop-ins of rsyslog.service changed on disk. Run 'systemctl daemon-reload' to reload units. $ sudo apt update -> will see the warning. The warning happens with every systemctl commands so it's not really ubuntu-pro-tools specific issue. However, systemctl warnings are not expected with `apt` commands usually so that's why this could be considered as a surprise. For fixing this properly, the place may not be in pro-tools itself but somewhere else. ** Attachment added: "apt-terminal.log" https://bugs.launchpad.net/ubuntu/+source/ubuntu-advantage-tools/+bug/2055239/+attachment/5750457/+files/apt-terminal.log ** Changed in: ubuntu-advantage-tools (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2055239 Title: Warning: The unit file, source configuration file or drop-ins of {apt- news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-advantage-tools/+bug/2055239/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs