[Bug 1743884] Update Released

[Łukasz Zemczak]

The verification of the Stable Release Update for grub2 has completed
successfully and the package has now been released to -updates.
Subsequently, the Ubuntu Stable Release Updates Team is being
unsubscribed and will not receive messages about this bug report.  In
the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.

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https://bugs.launchpad.net/bugs/1743884

Title:
  installed GRUB menu does not appear on term used for install

Status in grub2 package in Ubuntu:
  Fix Released
Status in grub2 source package in Xenial:
  In Progress
Status in grub2 source package in Artful:
  Fix Released
Status in grub2 source package in Bionic:
  Fix Released

Bug description:
  [Impact]
  I have a UEFI-based server with both a graphical head and a serial console (Cavium Sabre). If I boot the netboot (d-i) installer, the install menu appears on both, and I'm able to interact with the installer over both the serial console and the graphical head. However, when booting into the *installed* system (w/ HIDDEN_TIMEOUT disabled), the GRUB menu only appears over the graphical head. I can use either serial or graphical for input - that is, if I monitor the graphical head I can see the changes I'm typing on the serial console, but the serial console remains blank until I boot into Linux.

  Note: MAAS installations are not impacted by this because curtin adds
  an /etc/default/grub.d stub that manually sets
  "GRUB_TERMINAL=console".

  [Test Case]
  Install the system using d-i over the serial console.
  Comment out the HIDDEN variables in /etc/default/grub.
  sudo update-grub
  Reboot - and watch for the GRUB menu over the serial console.

  [Regression Risk]
  TBD

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