Password set but login without password?

Solution 1:

You can define an account where a password isn't required to login. Go to System Settings, User Accounts and call up the user profile. This screen appears:

If Automatic Login is set ON then no password is required to log on.

Edit 1 - Login without Password

As https://askubuntu.com/users/367990/byte-commander pointed out in comments you can click on a user's password and this screen will appear:

Click on the Action drop down menu and select Log in without a password

Solution 2:

Solved, ahah! For some reason I might have put my account into nopasswordlist. Further info:

How to get Ubuntu to ask for my password at login screen again?