One more note on how to reproduce this is I was editing the hostname to customize by pressing backspace which brought it into an invalid hostname with a '-' at the end which could mean that is was an invalid hostname at one point and ubiquity was not seeing the new hostnames after that as valid.
I immediately tried to install again and was successful without editing the hostname and using what automatically fills in the box. I can still get the hostname I want postinstallation by entering sudo editor /etc/hosts and changing the 127.0.1.1 to your desired hostname. I did have to reboot as clicking back would still have an invalid hostname. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1398977 Title: all hostnames on network appear taken when changing hostname. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1398977/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
