Ok, so I am new and trying to learn how to use my YubiKey. I first added a key to my ‘sudo’ command and it worked just fine. Next was to add it to my computer login screen when it is first turned on. I verified all settings were correct and it seemed to test out just fine. I then disabled my auto login on my laptop and now I am locked out when I start up the computer. I did not change my password but the computer does not recognized my login password. I cannot tell if this is a password issue or a YubiKey issue.
Any help would be appreciated. If I absolutely had to, I could completely wreck my laptop and reinstall Ubuntu but I would rather not.