[Bug 1736023] Re: Graphics is corrupt up on VT1-VT7 even during boot

[Jarl]

During an attempt to solve the problem myself I discovered
*) The problem did not exist on ubuntu 17.04
*) When removing the option `gfxmode $linux_gfx_mode` in the grub2 boot config. It boots perfectly fine.
*) When investigating the value `$linux_gfx_mode` in the boot console, the value is `keep`.
*) According to the grub2 manual (https://www.gnu.org/software/grub/manual/grub/html_node/gfxmode.html), then `keep` is not a valid value for the `gfxmode` variable. However the value `keep` is a valid value for the `gfxpayload` variable, see https://www.gnu.org/software/grub/manual/grub/html_node/gfxpayload.html#gfxpayload

And when looking into how the `$linux_gfx_mode` is assigned the value in
the `/boot/grub/grub.cfg` (line 119-136) where it achieves either the
value `text` or `keep`. It looks like this value should be used to set
the `gfxpayload` variable in stead of `gfxmode`.


** Summary changed:

- Graphics is corrupt up on VT1-VT7 even during boot
+ Graphics is corrupt on VT1-VT7 even during boot

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https://bugs.launchpad.net/bugs/1736023

Title:
  Graphics is corrupt on VT1-VT7 even during boot

Status in grub2 package in Ubuntu:
  New

Bug description:
  When booting. At the time where the load screen flashing "Kubuntu" is
  normally displayed, the graphics is corrupted. Both on text terminals
  VT1-VT6 and graphics terminal VT7

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: grub2 (not installed)
  ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8
  Uname: Linux 4.13.0-17-generic i686
  ApportVersion: 2.20.7-0ubuntu3.5
  Architecture: i386
  CurrentDesktop: KDE
  Date: Sun Dec  3 20:44:14 2017
  InstallationDate: Installed on 2014-12-15 (1084 days ago)
  InstallationMedia: Kubuntu 14.10 "Utopic Unicorn" - Release i386 (20141022.1)
  SourcePackage: grub2
  UpgradeStatus: Upgraded to artful on 2017-12-02 (0 days ago)

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