I was able to recover the machine by making a USB boot media from the kubuntu 13.10 install disk, booting from that, and then performing the efibootmgr command noted above while running from the newer kernel included in that image. So whatever kernel/BIOS interaction it was, it seems to have been fixed.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1249819 Title: couldn't install '' grub-efi-amd64" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1249819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
