There is not enough logs, nor information about your system. Please provide a journal log, from such a failed boot, also description of your system, contents of /run/systemd, kernel command line. Also which kernel are you booting, and are necessory kernel modules available.
It appears that hvc0 console is detected, and is expected to be there... ** Changed in: systemd (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1751345 Title: Timed out waiting for device dev-hvc0.device Status in systemd package in Ubuntu: Incomplete Bug description: Once in a while I get: [ TIME ] Timed out waiting for device dev-hvc0.device. [DEPEND] Dependency failed for Serial Getty on hvc0. That means I cannot login to the system using the console, and sometimes it's the only method available. Console is on hvc0 itself. Happens on bionic and xenial. Cascardo. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1751345/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp