I’m seeing the same problem. One interesting thing to look at is /var/log/auth.log:
Jan 19 00:40:11 drowelf polkit-agent-helper-1[5553]: (pam_krb5): none: pam_sm_authenticate: entry (0x0) Jan 19 00:40:11 drowelf polkit-agent-helper-1[5553]: (pam_krb5): user: attempting authentication as u...@kerberos.domain Jan 19 00:40:15 drowelf polkit-agent-helper-1[5553]: (pam_krb5): user: pam_sm_authenticate: exit (success) Jan 19 00:40:15 drowelf polkit-agent-helper-1[5553]: (pam_krb5): user: cannot retrieve principal from cache: Credentials cache permissions incorrect I think this and bug #476069 are probably closely related if not different symptoms of the same bug. ** Changed in: policykit (Ubuntu) Status: New => Confirmed -- polkit-grant-helper-pam general protection fault (SIGSEGV) when using Kerberos https://bugs.launchpad.net/bugs/476953 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs