[Bug 1937115] Re: Unable to boot/install Impish daily in UEFI boot mode

[Julian Andres Klode]

Hi folks,

we don't need reports of what works and what doesn't.

We already know that only live media are affected - installed systems
usually don't boot via removable media path - but if they do, they go
via fallback loader binary which works around the issue as it does not
interpret its arguments.

We even have two approaches to work around the issue that are under
discussion upstream.

Feedback we're looking for for fixing this better would be output of
efibootmgr -v with a tarball of /sys/firmware/efi/efivars/Boot* files,
on those systems where you can't boot live media. And which of those
boot entries did not work.

What happens here is that the bootloader entries in UEFI contain
arguments that get passed to shim. Shim tries to parse them, as it wants
to treat the first argument as the bootloader to boot next - whcih is
used for fwupd. Some firmware simply contains garbage in there, causing
things to fail. We'd like to know what this garbage this such that we
can safely ignore it and avoid even the workarounds.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to shim in Ubuntu.
https://bugs.launchpad.net/bugs/1937115

Title:
  Unable to boot/install Impish daily in UEFI boot mode

Status in cd-boot-images-amd64 package in Ubuntu:
  Triaged
Status in shim package in Ubuntu:
  In Progress
Status in cd-boot-images-amd64 source package in Focal:
  New
Status in shim source package in Focal:
  New
Status in cd-boot-images-amd64 source package in Impish:
  Triaged
Status in shim source package in Impish:
  In Progress

Bug description:
  Testing Ubuntu Impish daily ISO= http://cdimage.ubuntu.com/daily-
  live/20210721/impish-desktop-amd64.iso

  The test machines are:
   
  1. Dell [ Optiplex] MT 7040 i7-6700 booting in UEFI mode
  2. Dell [ Optiplex] MT 7060, i7-8700 booting in UEFI+secure boot mode

  Boot from USB media fails with the message:

  Failed to open /EFI/boot/? invalid parameter

  No further info available

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/cd-boot-images-amd64/+bug/1937115/+subscriptions