[Bug 1823259] Re: Update from grub-common AMD64 2.02-2ubuntu8.12 to 2.02-2ubuntu8.13 removed some Grub settings

[Mathieu Trudel-Lapierre]

I am still unable to reproduce this failure case. I don't know what else
to try.

I'm leaving this open so I can discuss this with other developers; but
I'll leave the bug aside for now so we can get back to it and have a way
to track this issue if we manage to find something that needs fixing in
the config merging code.

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Title:
  Update from grub-common AMD64 2.02-2ubuntu8.12 to 2.02-2ubuntu8.13
  removed some Grub settings

Status in grub2 package in Ubuntu:
  Triaged

Bug description:
  First, let me say that I don't have a lot of information, and will be
  happy if this is a "just me" thing.  But here's what happened.  Today
  around 8:30am on Ubuntu 18.04.2 HWE, I performed an apt update and apt
  upgrade.  Among the things that got upgraded was for grub-common,
  among a few others.  Upgrade proceeds without error and I continue to
  use my laptop.  A few hours pass and a shut down my laptop.  When I
  turn it back on, it boots, but the screen doesn't redraw properly.
  Full-screen windows don't properly show up, everything is real slow to
  render, mouse is slow to move.  I did a few things like try to switch
  to lightdm and reinstall xserver-xorg, but that didn't help.

  What *did* help was check on /etc/default/grub.  My laptop needs to
  have the Linux kernel parameter i915.modeset=1 in order for the
  display to work normally.  For some reason, this was absent after the
  update from this morning.  Considering grub-common updated, this is my
  suspect, however I don't know why it happened.

  I'd be welcome to include additional information, but I don't know
  what to provide.  And as I said, maybe it's just me.

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