I think it is a bug, because I did not create the file /etc/apt/apt.conf.d/20auto-upgrades. It seems to appear on a fresh install.
More importantly, because of the existence of this file, I cannot change the policy of automatic upgrades in the Software Sources window, because the option is disabled. Removing the file fixes the issue. But it doesn't solve why the file is there in the first place. What is to stop it reappearing? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1018367 Title: Unable to remove unattended-upgrades To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/1018367/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs