OK, I think this is actually bug 1485685 (i.e. the problem is grub- legacy-ec2 rather than grub itself), so I'm removing cloud-images from this bug and we'll track it over there.
** No longer affects: cloud-images -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1009294 Title: Grub update breaks automated dist-upgrade scripts on AMI images To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1009294/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs