Public bug reported:
After grub2 update that introduced patch entitled ubuntu-Make-the-linux-
command-in-EFI-grub-always-try.patch, grub2 stopped loading kernels
built without CONFIG_EFI_STUB on EFI machines when secure boot is not
enabled.
Attempting to do so fails with the following set of errors:
error: kernel doesn't support EFI handover.
error: you need to load the kernel first
The issue is that grub_errno is never reset if the handoff to linuxefi
fails because kernel was not built with CONFIG_EFI_STUB. This causes
the code at the end of the function to skip setting "loaded = 1",
causing the 2nd error from the initrd loader.
I'm attaching a small patch that appears to resolve the issue.
** Affects: grub2 (Ubuntu)
Importance: Undecided
Status: New
** Patch added: "proposed patch"
https://bugs.launchpad.net/bugs/1895912/+attachment/5411523/+files/fix-linuxefi-handoff-logic.patch
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https://bugs.launchpad.net/bugs/1895912
Title:
grub2 does not boot kernels built without CONFIG_EFI_STUB
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