Sorted in the end by a reboot and a "dpkg --configure -a". Plymouth prevented console-setup and console-setup-mini from installing. It failed on line 131 of console-setup.postinst.
-- package console-setup 1.34ubuntu15 failed to install/upgrade: (do-release-upgrade) https://bugs.launchpad.net/bugs/578153 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
