[Bug 1102925] [NEW] grub-reboot does not select kernel

[Brian Candler]

Public bug reported:

[Ubuntu 12.04.1 LTS server x86_64]

If I do

[code]
# vi /etc/default/grub
GRUB_DEFAULT="2>20"
# update-grub
[/code]

then I can select the default kernel to be used on next reboot.

However I believe it should be possible to do this in a one-shot way
with grub-reboot, and this doesn't work.

[code]
# grub-reboot "2>20"
# cat /boot/grub/grubenv
# GRUB Environment Block
saved_entry=2>20
prev_saved_entry=0
################################
...
# reboot
[/code]

At reboot I just get the default kernel selected.

It doesn't appear to be anything to do with submenus[*] because "grub-
reboot 1" doesn't even select the recovery option from the main menu.

[*] http://ubuntuforums.org/showthread.php?p=10720316

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1102925

Title:
  grub-reboot does not select kernel

Status in “grub2” package in Ubuntu:
  New

Bug description:
  [Ubuntu 12.04.1 LTS server x86_64]

  If I do

  [code]
  # vi /etc/default/grub
  GRUB_DEFAULT="2>20"
  # update-grub
  [/code]

  then I can select the default kernel to be used on next reboot.

  However I believe it should be possible to do this in a one-shot way
  with grub-reboot, and this doesn't work.

  [code]
  # grub-reboot "2>20"
  # cat /boot/grub/grubenv
  # GRUB Environment Block
  saved_entry=2>20
  prev_saved_entry=0
  ################################
  ...
  # reboot
  [/code]

  At reboot I just get the default kernel selected.

  It doesn't appear to be anything to do with submenus[*] because "grub-
  reboot 1" doesn't even select the recovery option from the main menu.

  [*] http://ubuntuforums.org/showthread.php?p=10720316

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