Here is a workaround confirmed for this problem. I just confirmed it by testing, and it works.
http://askubuntu.com/questions/147940/why-do-lp-and-lpr-return- unauthorized-error -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/972434 Title: Why do lp and lpr return unauthorized? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/972434/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs