[Bug 1752767] Re: grub2 regression, simultaneous console and video graphical glitches with new patch

[dann frazier]

On Thu, Mar 8, 2018 at 7:17 PM, Curt <1752767 at bugs.launchpad.net> wrote:
> Hi Brian,
>
>
> Thanks for having a look at this. I am experiencing this issue too and have enabled -proposed as suggested. The problem still seems to exist on my Gigabyte SabrePro 15 Laptop though. Sorry if I'm not following the correct protocol for posting here. This is my first time. Cheers!

While the fix has been accepted in proposed, it is not yet published
for all architectures.
Once published, an 'apt update; apt upgrade' should install version
2.02~beta3-4ubuntu7.3 GRUB packages on your system - that is the
version with the fix.

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https://bugs.launchpad.net/bugs/1752767

Title:
  grub2 regression, simultaneous console and video graphical glitches
  with new patch

Status in grub2 package in Ubuntu:
  Fix Released
Status in grub2-signed package in Ubuntu:
  Fix Released
Status in grub2 source package in Artful:
  Fix Committed
Status in grub2-signed source package in Artful:
  Fix Committed
Status in grub2 source package in Bionic:
  Fix Released
Status in grub2-signed source package in Bionic:
  Fix Released

Bug description:
  [Impact]
  The last SRU introduced a regression whereby, on EFI systems that support the graphical GRUB menu, there is a flickering affect where the menu switches between graphical and console modes while scrolling through menus.

  [Test Case]
  On an EFI system that supports a graphical GRUB menu, drop to the edit screen, and hold down the up/down arrow keys to cause rapid scrolling. You should not see the menu switch between graphical and console mode.

  [Regression Risk]
  This SRU only removes a patch added in the previous SRU.

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