[Bug 1308723] Re: clear, after background_color command uses a black color and thus only colors a frame

[Yu Ning]

I checked the grub2's source code, command clear will invoke each output
backend's cls method, and it seems that the black rectangle is produced
by backend "console".

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https://bugs.launchpad.net/bugs/1308723

Title:
  clear, after background_color command uses a black color and thus only
  colors a frame

Status in “grub2” package in Ubuntu:
  Confirmed

Bug description:
  if background_color 44,0,30; then
    clear
  fi

  is what ubuntu-logo plymouth theme snippet injects into grub.cfg, this
  generates a purple one character frame whilst the center is black. It
  used to be all purple. i mean aubergine.

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