I recently installed an Ubuntu 17.10 Server, with not too much fancy software or customizations.
When I ssh to my machine, it asks for my password. The password prompt has my correct username. When I enter the password, it just keeps waiting forever.
Note that when I deliberately enter a wrong password, it says "Permission denied, please try again" so the checking mechanism is actually working. But upon entering the right password, nothing seems to happen (waits indefinitely, I have to terminate my SSH client).
This has worked fine before, I actually logged in earlier today without problems. I certainly didn't change anything in my configuration, or add any login or startup scripts or anything.
This machine is on a remote physical location, so it would really suck if I have to go there and physically access or reset the machine. Is there any other way to access it?
For example is there a 'recovery login mode' with SSH or something? Or is there a way to make ssh say what it's waiting for (and optionally skip that) after I entered my password?