[Bug 1839317] Re: Grub fails to chainload the Windows Boot Manager on aarch64 laptops

[dimes]

*** This bug is a duplicate of bug 1845289 ***
    https://bugs.launchpad.net/bugs/1845289

Still broken here(which includes an apt-get update and apt-get dist-
upgrade today).

Versions of grub installed:

ii  grub-common                                2.04-1ubuntu12.1       
ii  grub-efi-amd64                             2.04-1ubuntu12.1     
ii  grub-efi-amd64-bin                         2.04-1ubuntu12.1       
ii  grub-efi-amd64-signed                      1.128.1+2.04-1ubuntu12.1       
ii  grub2-common                               2.04-1ubuntu12.1   

Secure boot on or off.

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https://bugs.launchpad.net/bugs/1839317

Title:
  Grub fails to chainload the Windows Boot Manager on aarch64 laptops

Status in grub2 package in Ubuntu:
  Confirmed

Bug description:
  After an update to 2.04 Grub fails to chainload into Windows.

  When selecting the menu item to boot into the Windows Boot Manager,
  the menu flashes and returns.

  When trying to chainload/boot via the Grub command line, nothing
  happens and the prompt reappears.

  When using the same commands in an earlier version (on a bootable USB
  stick) Windows sparks into life.

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