[Bug 722950] Please test proposed package

[Łukasz Zemczak]

Hello Phillip, or anyone else affected,

Accepted grub2-signed into xenial-proposed. The package will build now
and be available at
https://launchpad.net/ubuntu/+source/grub2-signed/1.66.16 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-xenial to verification-done-xenial. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-xenial. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

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https://bugs.launchpad.net/bugs/722950

Title:
  ctrl-x does not work in grub-efi

Status in grub2 package in Ubuntu:
  Fix Released
Status in grub2-signed package in Ubuntu:
  New
Status in grub2 source package in Xenial:
  Fix Committed
Status in grub2-signed source package in Xenial:
  Fix Committed
Status in grub2 source package in Zesty:
  Won't Fix
Status in grub2-signed source package in Zesty:
  Won't Fix
Status in grub2 source package in Artful:
  Fix Released
Status in grub2-signed source package in Artful:
  Fix Released

Bug description:
  [Impact]
  On some UEFI platforms, useful key combinations fail to work over the serial console. In particular, ^x/F10 - one of which is needed to boot after interactively editing the boot menu. This leaves end users without a sane way to tweak command line arguments, and potentially other system recovery tasks.

  [Test Case]
  Boot such a UEFI system to the GRUB menu. Press 'e' to edit the commandline, then attempt to continue the boot using "^x".

  [Regression Risk]
  The proposed fix is a cherry-pick from upstream that we've been shipping in Ubuntu since 17.10 w/o any any known regressions. However, it is possible that such regressions exist - e.g. if a platform's firmware has a buggy implementation fo the EFI_SIMPLE_TEXT_INPUT_EX protocol.

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