[Bug 428570] Re: Default grub2 configuration won't boot through to default OS

[JC Hulce]

Upstream comments are really interesting... they state that all of these
issues are caused by Ubuntu-specific patches.

BTW I tried to link the upstream bug
https://savannah.gnu.org/bugs/index.php?33576 but launchpad wouldn't let
me

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

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https://bugs.launchpad.net/bugs/428570

Title:
  Default grub2 configuration won't boot through to default OS

Status in “grub2” package in Ubuntu:
  Incomplete
Status in “grub2” source package in Karmic:
  Invalid

Bug description:
  Binary package hint: grub-common

  The default settings for /etc/default/grub won't allow the machine to
  boot through automatically to the default OS -- someone must hit
  <Enter> on the console, which is almost never an appropriate
  configuration for a server.  Here is the default /etc/default/grub:

  # If you change this file, run 'update-grub' afterwards to update
  # /boot/grub/grub.cfg.

    GRUB_DEFAULT=0
    GRUB_HIDDEN_TIMEOUT=0
    GRUB_HIDDEN_TIMEOUT_QUIET=true
    GRUB_TIMEOUT="2"
    GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
    GRUB_CMDLINE_LINUX=""

  with just a bit of trial and error I discovered that a non-zero value
  must be set for GRUB_HIDDEN_TIMEOUT in order for the machine to boot
  through to the first OS after timeout; e.g.

  # If you change this file, run 'update-grub' afterwards to update
  # /boot/grub/grub.cfg.

  GRUB_DEFAULT=0
  GRUB_HIDDEN_TIMEOUT=1
  GRUB_HIDDEN_TIMEOUT_QUIET=true
  GRUB_TIMEOUT="2"
  GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
  GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
  GRUB_CMDLINE_LINUX=""

  Looking over the documentation for grub2, it seems clear that
  GRUB_HIDDEN_TIMEOUT shouldn't have anything to do with whether or not
  the machine boots through after timeout.  I'm guessing this is a grub2
  bug?  Ubuntu/package versions listed below:

  root at ibis:/home/pgoetz# cat /etc/lsb-release
  DISTRIB_ID=Ubuntu
  DISTRIB_RELEASE=9.10
  DISTRIB_CODENAME=karmic
  DISTRIB_DESCRIPTION="Ubuntu karmic (development branch)"

  root at ibis:/home/pgoetz# dpkg -l | grep grub
  ii  grub-common   1.97~beta2-2ubuntu2      GRand Unified Bootloader, version 2 (common
  ii  grub-pc            1.97~beta2-2ubuntu2      GRand Unified Bootloader, version 2 (PC/BIOS

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