[Bug 1404006] Re: grub2-themes-ubuntu-mate partially obscured submenus

[nadrimajstor]

Thank you for looking at this issue.
I did have various issues with themeing grub's terminal. Being unsure am I brawling own inexperience or actual bugs I've opted for (in my mind) less damaging do-not-theme-terminal let-the-grub-apply-defaults.

Package installer should consider /etc to be the place where admin/user puts own final overrides, hence my dislike of "vendor" provided GRUB_THEME in /etc/default/grub.
On the other side, where should "vendor" put his default grub theme? Guided by example from /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.grub it ended up being one of the plymouth's alternatives conf.
I do agree that changing grub's theme as a responsibility should not belong to packages outside of grub2-themes-ubuntu-mate.

Is there something like /lib/grub/default?

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https://bugs.launchpad.net/bugs/1404006

Title:
  grub2-themes-ubuntu-mate partially obscured submenus

Status in ubuntu-mate:
  Confirmed
Status in grub2 package in Ubuntu:
  Incomplete
Status in grub2-themes-ubuntu-mate package in Ubuntu:
  Confirmed
Status in ubuntu-mate-artwork package in Ubuntu:
  New

Bug description:
  Using Ubuntu MATE, the included /etc/default/grub, and grub2-themes-
  ubuntu-mate (as of 0.3.6~trusty4 and 0.3.6~utopic4), sometimes the
  only portion of the submenus (and edit dialog, etc.) that is visible
  appears directly beneath where the top level menu "box" was; the rest
  is obscured by the "border", and the content appears "cropped"; i.e.,
  when I use the "Advanced options for Ubuntu" submenu, I probably won't
  see a menu of installed kernels, unless I have enough to appear within
  the visible area and/or my resolution is low enough. The applicable
  key controls are also invisible.

  As a workaround, if I hit Esc to get back to the top level menu, and
  go back into "Advanced…" there is no obscuring border any longer.

  This could be a bug with grub2 itself, and might apply to other
  themes; currently using 2.02~beta2-9ubuntu1 (trusty) and 2.02~beta2-15
  (utopic); will see what happens with 2.02~beta2-18.

  Note that update-grub warns that "Setting GRUB_TIMEOUT to a non-zero
  value when GRUB_HIDDEN_TIMEOUT is set is no longer supported" for the
  default config file.

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