I determined the cause of the boot hang. It seems an existing hidden network connection located in `/etc/NetworkManager/system-connections/` was the culprit. Below are the steps to reproduce.
Step 1. Download attached `BrokenConnection.nmconnection` file Step 2. Place the file in `/etc/NetworkManager/system-connections/` Step 3. Either run `sudo service Network -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1879633 Title: Killer 500s (QCA6390) WLAN/BT [17cb:1101] unavailable To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1879633/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
