[Bug 1648278] Re: Make Ubuntu 32-bit ISO image directly installable on UEFI machine

[UlfZibis]

I first declared this as security bug, because the standard 32-bit
Ubuntu installation fails to benefit from secure boot.

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https://bugs.launchpad.net/bugs/1648278

Title:
  Make Ubuntu 32-bit ISO image directly installable on UEFI machine

Status in grub2-signed package in Ubuntu:
  New
Status in ubiquity package in Ubuntu:
  New

Bug description:
  Only with a workaround I can install Ubuntu 32-bit on a UEFI machine:
  - First install Ubuntu 64-bit on a temporary partition.
  - Then install Ubuntu 32-bit with ubiquity -b
  - Start Ubuntu 64-bit and run update-grub.
  - Start Ubuntu 32-bit.

  To make Ubuntu 32-bit update-proof I can run:
  sudo apt install grub-efi-amd64
  sudo mount /dev/sda1 /boot/efi
  sudo grub-install --efi-directory /boot/efi --force-extra-removable
  After I can delete the temporary Ubuntu 64-bit installation

  To make Ubuntu 32-bit again bootable with UEFI secure boot I can additionally run:
  sudo dpkg --add-architecture amd64
  sudo apt-get update
  sudo dpkg --install Download/grub-efi-amd64-signed_1.66.2+2.02~beta2-36ubuntu3.2_amd64.deb
  sudo dpkg-reconfigure grub-efi-amd64-signed
  sudo grub-install
  sudo apt-get install shim
  sudo dpkg-reconfigure grub-efi-amd64-signed
  sudo dpkg-reconfigure shim
  sudo grub-install

  Please make this possible directly with the Ubuntu 32-bit ISO image !

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