[Bug 1199731] Re: config script thinks grub.d contains all variables

[Launchpad Bug Tracker]

This bug was fixed in the package grub2 - 2.00-15ubuntu1

---------------
grub2 (2.00-15ubuntu1) saucy; urgency=low

  [ Colin Watson ]
  * Resynchronise with Debian.  Remaining changes:
    - Default to hiding the menu; holding down Shift at boot will show it.
    - Add crashkernel option.
    - Bypass menu unless other OSes are installed or Shift is pressed.
    - Allow Shift to interrupt 'sleep --interruptible'.
    - Reduce visual clutter in normal mode.
    - Remove verbose messages printed before reading configuration.
    - Suppress kernel/initrd progress messages, except in recovery mode.
    - Show the boot menu if the previous boot failed.
    - Suppress "GRUB loading" message unless Shift is held down.
    - Check hardware support before using gfxpayload=keep.
    - Set vt.handoff=7 for smooth handoff to kernel graphical mode.
    - In recovery mode, add nomodeset to the Linux kernel arguments, and
      remove the 'set gfxpayload=keep' command.
    - Skip Windows os-prober entries on Wubi systems, and suppress the menu
      by default if those are the only other-OS entries.
    - Handle probing striped DM-RAID devices.
    - Disable cursor as early as possible in grub_main.
    - Treat Kubuntu as an alias for Ubuntu in GRUB_DISTRIBUTOR.

  [ Harald Sitter ]
  * Update mkconfig_ubuntu_distributor.patch to handle Kubuntu like Ubuntu;
    no GNU/Linux suffix.

grub2 (2.00-15) unstable; urgency=low

  [ Colin Watson ]
  * Install reportbug presubj and script files in all binary packages.
  * Make grub-yeeloong.postinst explicitly install with
    --target=mipsel-loongson (closes: #708204).
  * Make grub-script-check fail on scripts containing no commands (closes:
    #713886).
  * Make the description of grub-firmware-qemu a little more generic, rather
    than assuming that bochsbios provides qemu's default BIOS image (closes:
    #714277).
  * Don't assume that the presence of /etc/default/grub or
    /etc/default/grub.d/*.cfg means that any particular item is set in it
    (LP: #1199731).

  [ Debconf translations ]
  * Hungarian (Dr. Nagy Elemér Károly).
 -- Colin Watson <cjwatson at ubuntu.com>   Sat, 13 Jul 2013 17:08:01 +0100

** Changed in: grub2 (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1199731

Title:
  config script thinks grub.d contains all variables

Status in “grub2” package in Ubuntu:
  Fix Released

Bug description:
  TL;DR: grub maintainer scripts endup writing an empty linux_cmdline if
  /etc/default/grub.d/* is present from another package.

  At least grub-pc's config script thinks that the presence of /etc/default/grub.d/* means that GRUB_CMDLINE_* is defined in there and tries to read it from grub.d/ for usage in a *newly* created config. However in Kubuntu we have one file in grub.d/ and that file only sets GRUB_DISTRIBUTOR.
  The config script will - when present - try to read deafult/grub and grub.d/* and then carry the read values into the new deafult/grub. It does however not check whether the read values are null/nil/undefined such that it ends up writing an empty cmdline into default/grub by default.

  --- code ----

  for x in /etc/default/grub /etc/default/grub.d/*.cfg ; do
    if [ -e "$x" ]; then
      DEFAULT_FOUND="yes"
      . "$x"
    fi
  done

  if [ "$DEFAULT_FOUND" = "yes" ]; then
    db_set grub2/linux_cmdline "$GRUB_CMDLINE_LINUX"
    db_set grub2/linux_cmdline_default "$GRUB_CMDLINE_LINUX_DEFAULT"

  --- code ----

  In combination with an issue in ubiquity/d-i which also prevents a
  default cmdline by default. Put together these issues cause bug
  1171099 (no plymouth after installation in kubuntu).

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