[ubuntu] Hide name in lock screen (or go to login screen from lock screen)

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http://ubuntuforums.org – I've searched the forums and the googles for guidance on this but haven't found anything yet. I hide usernames on the login screen and I would like to do the same on the lock screen. I would be happy with hiding my name or username (full name appears by default) or being taken directly to the login screen from lock. Any ideas? Many thanks in advance! (Hardware)