[Bug 1925010] Re: shim-signed 15.4 does not boot on EFI 1.10 systems

[Julian Andres Klode]

Hi, Donald: Your issue is different. Here you can't even get to the grub
menu. If you can't boot into Windows either (did you try that from grub,
or directly from the EFI boot menu [I think it's F12 or F10 or something
you need to press at startup and select Windows]), that sounds more like
a firmware issue (if you did not boot via grub).

If you can boot Windows from EFI, but not via grub, and grub and shim
are uptodate, please open a new issue. Otherwise, please contact Lenovo
for support.

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https://bugs.launchpad.net/bugs/1925010

Title:
  shim-signed 15.4 does not boot on EFI 1.10 systems

Status in shim package in Ubuntu:
  Fix Released
Status in shim-signed package in Ubuntu:
  Fix Released
Status in shim source package in Xenial:
  Fix Released
Status in shim source package in Hirsute:
  Fix Released
Status in shim-signed source package in Hirsute:
  Fix Released

Bug description:
  The latest update on Hirsute made the MacBook Air from 2012
  unbootable.

  It could be recovered by booting a 20.04 live CD, downloading 20.04's
  shim package and overwriting the files in EFI/ubuntu and EFI/BOOT with
  the files shipped in the shim package.

  Machines Affected (not comprehensive):
  MacBookPro8,2
  MacBookAir5,2

  [Test case]
  For a system that has applied the workaround from https://bugs.launchpad.net/ubuntu/+source/shim/+bug/1925010/comments/14 and is bootable:

  - install shim-signed from hirsute-proposed
  - reboot
  - verify that the system now boots without workaround

  This test case applies only to hirsute.  For all other series, there
  has been no regression, and because this is the same binary across all
  series, no other SRU testing is required.

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