[Bug 2078307] Re: Grub 2.12 in Oracular is unable to boot Windows using chainloader

[haobinnan]

I would like to make a suggestion regarding the "mixed mode" UEFI.
Although Ubuntu no longer provides 32-bit Ubuntu ISOs, there are still
some devices on the market with 32-bit UEFI BIOS, but the CPU supports
64-bit mode. In this case, Ubuntu only needs to provide a 32-bit GRUB2
to successfully boot the system.

Have you considered this suggestion?

Additionally, in mixed mode, Secure Boot doesn't actually need to be
considered.

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https://bugs.launchpad.net/bugs/2078307

Title:
  Grub 2.12 in Oracular is unable to boot Windows using chainloader

Status in grub2 package in Ubuntu:
  Confirmed

Bug description:
  I am using Shim 15.8 in combination with GRUB2.12. One of the GRUB
  menu items, chainloader /efi/Microsoft/Boot/bootmgfw.efi, fails to
  boot, while it works correctly with GRUB2.06. Below is a screenshot of
  the error.

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