[Bug 1311302] Re: GRUB2 asks for password when booting

[Tom Book]

I can confirm the bug! I had the same problem when upgrading from 12.04
to 14.04. Thankfully the --unrestricted option helped.

Please put the bug on high priority because users cannot boot anymore
because the password might be confidential (known only by
administrators) or users may have forgotten their password (set a long
time ago).

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https://bugs.launchpad.net/bugs/1311302

Title:
  GRUB2 asks for password when booting

Status in “grub2” package in Ubuntu:
  New

Bug description:
  Following this guide:
  https://help.ubuntu.com/community/Grub2/Passwords you can set a
  superuser to prevent anyone from editing grub lines, but allowing them
  to boot anyway. Back in Ubuntu 12.04, you just edit
  /etc/grub/40_custom with:

  set superusers="John"
  password John foo
  export superusers

  then you execute sudo update-grub2 and that's it. You can't edit grub
  entries without the password but you can boot.

  Now in Ubuntu 14.04, GRUB will ask for the password even when you just
  want to boot.

  A workaround is editing /etc/grub.d/10_linux with:

  CLASS="--class gnu-linux --class gnu --class os --unrestricted"

  The "--unsrestricted" option does the trick. But the "way to go"
  should be adding a line in /etc/default/grub so the grub-mkconfig will
  auto-edit the 10_linux file.

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