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

[Nicholas Stommel]

Public bug reported:

Okay, so the following patch at http://launchpadlibrarian.net/356413428/grub2_2.02~beta3-4ubuntu7.1_2.02~beta3-4ubuntu7.2.diff.gz
which basically amounts to changing a single line in /etc/grub.d/00_header TOTALLY breaks my menu selection graphics when I boot up. Every time a line changes, like as in scrolling the menu or watching the countdown timer, I can see the console mode GRUB line flashing black and white behind the video gfx mode screen. I believe this regression is caused entirely by Dann Frazier's idea for the grub patch: "Instead of switching from "console" to "gfxterm", let's output to both." *sigh*

Removing the single change, the "--append" flag, in the file
/etc/grub.d/00_header and regenerating the grub.cfg file completely
solves the problem. What concerns me is that this patch somewhat breaks
the average user's default grub gfx mode; it looks glitchy and horrible.
I simply cannot tolerate this behavior on an incredibly simple boot
selection menu, let alone on an actual grub theme, KDE-style. My machine
is a very standard HP EliteDesk 800 G3 Mini Desktop, and I had no
problems before with GRUB doing this horrible-looking pop-from-behind
simultaneous video and console behavior. This tiny patch represents a
misguided and frankly appalling regression.

And yes, this applies upstream to Bionic Beaver (I tried the proposed
package also) as well as the current version of the grub2 package on
Artful Aardvark. Please fix before the Ubuntu LTS release ships with
this glaring bug.

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: regression-proposed regression-release regression-update

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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:
  New

Bug description:
  Okay, so the following patch at http://launchpadlibrarian.net/356413428/grub2_2.02~beta3-4ubuntu7.1_2.02~beta3-4ubuntu7.2.diff.gz
  which basically amounts to changing a single line in /etc/grub.d/00_header TOTALLY breaks my menu selection graphics when I boot up. Every time a line changes, like as in scrolling the menu or watching the countdown timer, I can see the console mode GRUB line flashing black and white behind the video gfx mode screen. I believe this regression is caused entirely by Dann Frazier's idea for the grub patch: "Instead of switching from "console" to "gfxterm", let's output to both." *sigh*

  Removing the single change, the "--append" flag, in the file
  /etc/grub.d/00_header and regenerating the grub.cfg file completely
  solves the problem. What concerns me is that this patch somewhat
  breaks the average user's default grub gfx mode; it looks glitchy and
  horrible. I simply cannot tolerate this behavior on an incredibly
  simple boot selection menu, let alone on an actual grub theme, KDE-
  style. My machine is a very standard HP EliteDesk 800 G3 Mini Desktop,
  and I had no problems before with GRUB doing this horrible-looking
  pop-from-behind simultaneous video and console behavior. This tiny
  patch represents a misguided and frankly appalling regression.

  And yes, this applies upstream to Bionic Beaver (I tried the proposed
  package also) as well as the current version of the grub2 package on
  Artful Aardvark. Please fix before the Ubuntu LTS release ships with
  this glaring bug.

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