I try to realize a multisensor system (without Display or keyboard) which needs sudo rights directly after bootup (Ubuntu 12.04 server for ARM). Therefore, I would like to automatically login as root. (just turn on the power and the system will boot without any password request etc) I know that this isn't recommended but some USB issues forcing me to use root rights. I'm perfectly aware of what I'm doing so please don't tell me not to do it. I looked up the web but could find a solution... It would be great to get your help. Thank you.