[Bug 883831] Re: Grub2 doesn't auto-boot kernels in submenus

[Tony Green]

Please ignore my comment about a bug in startup-manager. On further
investigation I understand how this is working and the but I thought
existed doesn't.

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https://bugs.launchpad.net/bugs/883831

Title:
  Grub2 doesn't auto-boot kernels in submenus

Status in “grub2” package in Ubuntu:
  New

Bug description:
  Xubuntu 11.10 X86_64

  Installed:
  grub-common 1.99-12ubuntu5
  grub-gfxpayload-lists 0.5
  grub-pc 1.99-12ubuntu5
  grub-pc-bin 1.99-12ubuntu5
  grub2-common 1.99-12ubuntu5

  I have previous kernels installed, one of which I want to boot from by default.
  By setting GRUB_DEFAULT in /etc/default/grub and running update-grub (or similarly via startup-manager, though that has a bug I'll be reporting separately) I can tell Grub which kernel to boot.

  However. When the grub.cfg file is built, my old kernels appear in a
  submenu (copy of file attached). It seems that the default number is
  taken as to mean the default number on the main menu and the submenu
  is ignored. So instead of booting my chosen kernel, my computer boots
  into memtest instead.

  Kernels should be auto-bootable whether or not they're in a Grub
  submenu

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