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[Launchpad Bug Tracker <1581299@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package shim-signed - 1.27~16.04.1

---------------
shim-signed (1.27~16.04.1) xenial; urgency=medium

  * Backport shim 0.9+1474479173.6c180c6-1ubuntu1 to 16.04. (LP:
#1637290)

shim-signed (1.27) zesty; urgency=medium

  [ Steve Langasek ]
  * Update to the signed 0.9+1474479173.6c180c6-1ubuntu1 binary from
    Microsoft.
  * update-secureboot-policy:
    - detect when we have no debconf prompting and error out instead of ending
      up in an infinite loop.  LP: #1673817.
    - refactor to make the code easier to follow.
    - remove a confusing boolean that would always re-prompt on a request to
      --enable, but not on a request to --disable.

  [ Mathieu Trudel-Lapierre ]
  * update-secureboot-policy:
    - some more fixes to properly handle non-interactive mode. (LP: #1673817)

shim-signed (1.23) zesty; urgency=medium

  * debian/control: bump the Depends on grub2-common since that's needed to
    install with the new updated EFI binaries filenames.

shim-signed (1.22) yakkety; urgency=medium

  * Update to the signed 0.9+1474479173.6c180c6-0ubuntu1 binary from Microsoft.
    (LP: #1581299)
  * Update paths now that the shim binary has been renamed to include the
    target architecture.
  * debian/shim-signed.postinst: clean up old MokManager.efi from EFI/ubuntu;
    since it's being replaced by mm$arch.efi.

 -- Mathieu Trudel-Lapierre <cyphermox@xxxxxxxxxx>  Thu, 23 Mar 2017
16:58:44 -0400

** Changed in: shim-signed (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1581299

Title:
  shim: set second stage not work

Status in shim package in Ubuntu:
  Fix Released
Status in shim-signed package in Ubuntu:
  Fix Released
Status in shim-signed source package in Trusty:
  Fix Committed
Status in shim-signed source package in Xenial:
  Fix Released
Status in shim-signed source package in Yakkety:
  Fix Released

Bug description:
  [Impact]
  Some firmwares may fail to populate LoadOptions in EFI in a way that shim understands, including only the extra options rather than the full BootEntry.

  [Test case]
  Attempt to boot a system on a BootEntry that requires extra options, such as when running firmware updates via fwupdate.

  [Regression Potential]
  The information passed by some firmwares may look as though it is a simple UCS-2 string although it contain extra information, and thus cause a failure to boot due to unrecognized LoadOptions when shim attempts to boot. The default boot process does not include LoadOptions at all, but this may adversely affect fwupdate or running MokManager.

  ----

  Using the applications such as fwupdate and efibootmgr to set the device path for the second stage path is not working on some platforms.
  The second stage set is not working after commit
  3322257e611e2000f79726d295bb4845bbe449e7 on https://github.com/rhinstaller/shim
  for those which load option only have one string.

  This is due to some versions of BDS, on loadoption we only get:
  00000000  5c 00 66 00 77 00 75 00  70 00 78 00 36 00 34 00  |\.f.w.u.p.x.6.4.|
  00000010  2e 00 65 00 66 00 69 00  00 00                    |..e.f.i...|
  0000001a

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