I encountered the same problem trying to update a package (exim4 as it happens) whose configuration file I had previous modified. muon-updater just hung "Waiting for configuration file". muon-updater didn't provide a way to exit it cleanly, so I ended up killing it externally. Then had to kill two qaptworker2 processes so that the lock on the package database was released. Then
$ sudo dpkg --configure -a completed the update. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1460133 Title: muon-updater hangs with "Waiting for configuration file" on debconf question To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/muon/+bug/1460133/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs