I can reproduce on a 2008 iMac and a 2011 Mac Mini. I can also confirm that Rowan's steps in comment #23 work to fix the problem.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1867092 Title: Failed to set MokListRT: Invalid Parameter To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1867092/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs