Ah, bug 1167622 seems to have the answer. A new commit between kernels 3.8.2 and 3.8.3 adds some paranoia around writing to the UEFI. This is going to be troublesome.
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1167622 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1168659 Title: efibootmgr can't set EFI parameters via /sys/firmware/efi/vars To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1168659/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
