Bug#1058818: Acknowledgement (grub-common: fwsetup --is-supported not supported, boots into setup instead)

[Georg Lukas]

Okay, this is a weirdness caused by how I installed this laptop. I did a
standard Debian install in 2021, then copied the rootfs from my previous
(non-EFI) machine over it.

Therefore I ended up with the modules in /usr/lib/grub/x86_64-efi in
place, but not part of any installed Debian package. Instead, grub-pc
kept the files in /usr/lib/grub/i386-pc up-to-date.

However, grub-install correctly identified the machine as EFI and just
silently used the stale files from /usr/lib/grub/x86_64-efi:

# /usr/sbin/grub-install
Installing for x86_64-efi platform.
Installation finished. No error reported.
#

This caused the 2021 files to be installed to /boot/grub/x86_64-efi/ and
to the EFI partition.

Installing grub-efi-amd64-bin and updating grub got me the
efifwsetup.mod with the --is-supported flag and now everything is good.

Still, maybe it's a good idea to have grub-install check for the
presence of the right / up-to-date package?

Thank you very much.