by sebraa » Tue Aug 19, 2014 3:31 pm
The default username (what you type at the "login:" prompt) is linaro.
The default password (what you type at the "Password:" prompt) is linaro, although you might want to try an empty password, too.
Trying random passwords is not going to help you.
To change the password, you can use the "passwd" command. To do that, you need to be able to login to the system (using the graphical interface, or SSH, or serial line), and you need to know the current password.
If you run "passwd" as the super-user (that is, by using "sudo passwd linaro"), you can change the password for user "linaro" without knowing it. I don't know out of my head if the default configuration allows passwordless sudo, though.