I am also experiencing problems using cups with kerberos. The problem is that cups runs the smb backend as root which doesn't know where to find the kerberos ticket (since the environment variable KRB5CCNAME is not defined there). Making a small script that exports the ticket cache name and than calls the backend does the job, but the ticket cache name changes name on every login (this can be changed though).
Calling the samba backend manually works perfectly fine and gives a message that it is using kerberos authentication. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/572869 Title: CUPS is unable to authenticate using kerberos (known bug) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
