I can reproduce. This looks to be something in grub that shim doesn't appear to like.
** No longer affects: ipxe (Ubuntu) ** Package changed: shim-signed (Ubuntu) => grub2 (Ubuntu) ** Changed in: grub2 (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1789319 Title: Unable to load shimx64.efi using iPXE over UEFI To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1789319/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs