Bug#756179: grub-efi-amd64: Boot failure after upgrade to 2.02~beta2-11

[Colin Watson]

Control: reassign -1 efibootmgr

On Sun, Jul 27, 2014 at 09:40:46AM +0200, Antonio Sartori wrote:
> On Lenovo Thinkpad X240 laptop, after upgrading grub to 2.02~beta2-11
> (upgrade completed without errors), on reboot I get the following
> error message from the BIOS:
> "Some essential variables are absent or corrupted and Boot Manager has
> restored them from default configuration"
> Then grub starts into its minimal shell and gives a command line.
> After rebooting, the bios error does not appear anymore but grub
> starts again into its minimal shell. Booting with an usb stick into
> the system and doing grub-install makes the BIOS error appear again.
> 
> Downgrading grub to 2.00-22 and reinstalling grub removes the issue.

I think this must be a problem with efibootmgr.  Could you post the
output of "sudo efibootmgr" in the working and broken (before rebooting)
configurations?  Please also post the version of efibootmgr you have
installed.

To the efibootmgr maintainer: This looks rather like
https://github.com/vathpela/efibootmgr/issues/7 .  Perhaps the latest
version in testing/unstable fixes this?

Thanks,

-- 
Colin Watson                                       [cjwatson at debian.org]