Look like mini.iso/netboot will use plymouth in text mode where the server.iso does not. So I think that plymouth is not being taken down and therefore utilising tty1 which is why we see no login adding plymouth to the bug.
** Package changed: debian-installer (Ubuntu) => plymouth (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1675453 Title: During d-i install of ubuntu-server from mini.iso I get no login prompt To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1675453/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs