I hit this bug a few minutes ago, but upgrading from the ubuntu-gnome- vanilla-desktop package in 17.10. bamfdaemon is not installed but gnome- icon-theme is.
$ apt-cache policy bamfdaemon bamfdaemon: Installed: (none) Candidate: 0.5.3+17.10.20170810-0ubuntu1 Version table: 0.5.3+17.10.20170810-0ubuntu1 500 500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages $ apt-cache policy gnome-icon-theme gnome-icon-theme: Installed: 3.12.0-2 Candidate: 3.12.0-2 Version table: *** 3.12.0-2 500 500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages 500 http://archive.ubuntu.com/ubuntu bionic/universe i386 Packages 100 /var/lib/dpkg/status -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1742147 Title: upgrade from 17.10 to 18.04 fails with triggers looping To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1742147/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs