Ubuntu
grub2 package

Permit to define bootloader_id in grub configuration

Bug #1625200 reported by EOLE team
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
grub2 (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

Hello,

For a derivative we want to set GRUB_DISTRIBUTOR, unfortunately, when building -alternate images, shim-signed and grub-efi-amd64-signed are installed by default.

I think a proper fix for #1242417 could be to set bootloader_id from a new variable like GRUB_EFI_DISTRIBUTOR.

This way we could define GRUB_DISTRIBUTOR='FOO' and GRUB_EFI_DISTRIBUTOR='ubuntu'.

Regards.

Tags: xenial
Revision history for this message
EOLE team (eole-team) wrote :

Another way could be to setup a EFI/ubuntu/grub.cfg to set the real prefix to EFI/$(GRUB_DISTRIBUTOR).

Regards.

Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in grub2 (Ubuntu):
status: New → Confirmed
Revision history for this message
mirak (mirak-mirak) wrote :

The real issue is that no matter what you put in GRUB_DISTRIBUTOR=whatever then grubx64.efi loads EFI/ubuntu/grub.cfg instead of loading EFI/whatever/grub.cfg .
It's like the path is hardcoded in the binary.

Revision history for this message
mirak (mirak-mirak) wrote :

When you run grub-install it creates /boot/grub/x86_64-efi/grubx64.efi that references /boot/grub/grub.cfg

The problem then is that instead of copying this one to /EFI/$GRUB_DISTRIBUTOR/grubx64.efi, it copies /usr/lib/grub/x86_64-efi/monolithic/grubx64.efi or /usr/lib/grub/x86_64-efi-signed/grubx64.efi.signed .

They are prebuilt binaries in the deb packages and reference /EFI/ubuntu/grub.cfg .

I understand that it's necessary if you want to have a signed grubx64.efi, but we should be able to have correct implementation if we don't care about secure boot.

I can find a setting that say which grubx64.efi to take.
Maybe it's handleded by alternatives, I will check that.

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