Authenticate user that has no password?

Posted by Greg Treleaven on Ask Ubuntu See other posts from Ask Ubuntu or by Greg Treleaven
Published on 2011-10-30T20:02:45Z Indexed on 2012/09/16 21:52 UTC
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password

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users

I've set up my user account so that no password is required to login and I need to install some updates. However when prompted for the password, it says authentication failed if I leave the box blank. I don't have a password, how am I supposed to authenticate?

EDIT

I tried the method in Reset lost administrative(root) password but it came out with an error: Authentication token manipulation error password unchanged. What does this mean?

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