[Bug 1273764] Re: Grub ignores TIMEOUT options on /etc/default/grub

[Tony Beta Lambda]

After reading quick_boot.patch, I think the environment variable
$quick_boot (set by default) was added in order to give the user an
option to force timeout to be 0.  However, the test seems reversed to
me:

  if [ "$quick_boot" = 1 ] && [ "x${found_other_os}" != "x" ]; then
    cat << EOF
set timeout_style=menu
if [ "\${timeout}" = 0 ]; then
  set timeout=10
fi
EOF
  fi

meaning timeout is increased to 10 when $quick_boot is set, which is not
what I'll call "quick_boot".  I suggest changing it to "$quick_boot" =
0.

And there should be a way to modify this variable somewhere else, since
any change to the file itself will get overridden in an upgrade.

** Patch added: "quick_boot_fix.patch"
   https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1273764/+attachment/5105706/+files/quick_boot_fix.patch

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https://bugs.launchpad.net/bugs/1273764

Title:
  Grub ignores TIMEOUT options on /etc/default/grub

Status in grub2 package in Ubuntu:
  Triaged
Status in grub2 source package in Vivid:
  Triaged

Bug description:
  This is a fresh install of trusty (amd64), without proposed (since
  this grub package has reached the regular repos).

  I have attached my `/etc/default/grub` file. After modifying it, I
  make sure to run update-grub, but the changes won't take effect on
  next reboot: the menu is shown with a timeout of 10 seconds even when
  GRUB_TIMEOUT_STYLE is set to countdown.

  After reading grub.cfg and googling a bit I found this:

  https://gist.github.com/LeahCim/9332432

  (30_os-prober is overriding the values of GRUB_TIMEOUT and
  GRUB_TIMEOUT_STYLE.)

  Description:	Ubuntu Trusty Tahr (development branch)
  Release:	14.04

  grub-pc:
    Installed: 2.02~beta2-7
    Candidate: 2.02~beta2-7
    Version table:
   *** 2.02~beta2-7 0
          500 http://do.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
          100 /var/lib/dpkg/status

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