[Bug 997270] Re: Kernel options not effective when added to /etc/default/grub

[Phillip Susi]

Ok, I thought you were saying that you added the acpi and console
options to /etc/default/grub and they weren't going to
/boot/grub/grub.cfg, but they do appear there in your paste.

Now it occurs to me that you replaced the entire stanza with one that
does not include the gfxmode line.  Please try uncommenting this line in
/etc/default/grub, running update-grub, and see if you can boot
normally:

#GRUB_TERMINAL=console


** Changed in: grub2 (Ubuntu)
       Status: Invalid => Incomplete

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https://bugs.launchpad.net/bugs/997270

Title:
  Kernel options not effective when added to /etc/default/grub

Status in “grub2” package in Ubuntu:
  Incomplete

Bug description:
  After upgrading a fit-pc2 (http://www.fit-pc.com/web/fit-pc/fit-
  pc2-specifications/) from 10.04 to 12.04, I got a black screen at boot
  time (before hitting the grub menu).

  The root cause is probably due to a known issue with gma500_gfx
  drivers
  (https://wiki.ubuntu.com/HardwareSupportComponentsVideoCardsPoulsbo
  /#PSB-GFX_drivers) and after trying a few combination with a live USB
  key, I saw that I could boot with the options "acpi=off" and
  "console=tty1".

  Using boot-repair, I have added these options to
  "GRUB_CMDLINE_LINUX_DEFAULT" in /etc/default/grub (BootInfo available
  at http://paste.ubuntu.com/975929/) but still get a black screen.

  I am sure that these options work because when I replace the content
  of /boot/grub/grub.cfg by:

  +++++++++++++++++++++++++++++
  set root=(hd0,1)
  linux /vmlinuz root=/dev/sda1 ro acpi=off console=tty1
  initrd /initrd.img
  boot
  +++++++++++++++++++++++++++++

  the machine boots perfectly fine.

  Why are these options not taken into account when added to
  /etc/default/grub?

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