Bug#966575: same error message here

[Colin Watson]

On Fri, Jul 31, 2020 at 11:27:18PM +0200, Miklós Quartus wrote:
> The same here. You should be more careful when upgrading or fixing a
> security issue in the boot loader.

We do take considerable care - the fact that sometimes problems slip
through doesn't mean we weren't careful.  (In general, this type of
problem relates to oddities of particular people's systems.)

> It currently breaks a Debian Buster system, which is production. The
> suggested grub reinstall method did _not_ work for me. I booted from a
> USB stick into rescue mode and had to downgrade grub-common package (I
> don’t have grub2 on my system) and reinstall all dependent packages
> again. After downgrading grub-common/grub2-common to version
> 2.02+dfsg1-20, my system boots and works fine.

Unlike other folks reporting this bug, you seem to be using UEFI.  That
means that you have a completely different problem, even though it
presents with similar symptoms.

Could you please file a *separate* bug report with details of the
problem you encountered?  We're also likely to need to know the
disk/partition/filesystem layout of your system, whether you're using
UEFI Secure Boot, and anything else that might be interesting about how
your machine boots.  This isn't the same thing as the other problems in
this bug, and we'll need to investigate it separately.

-- 
Colin Watson (he/him)                              [cjwatson at debian.org]