Hi, This turned out to be a bad /etc/default/grub config and has since been resolved.
** Changed in: grub2 (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1341618 Title: grub 1.99-21ubuntu3.15 will not boot on some hardware To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1341618/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs