[Bug 425979] Re: Holding shift fails to display grub2 menu

[ceg]

This is grub bug someone forward this to grub authors!

http://askubuntu.com/questions/117525/hide-grub2-menu-unless-you-hold-
down-shift-key-how-to-make-this-happen

Somehow even if HIDDEN_TIMEOUT is set to a positive value,  "the"
shiftkey (said to be only the right-shift !!!) is said to only work if
there is also GRUB_DISABLE_OS_PROBER=true

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https://bugs.launchpad.net/bugs/425979

Title:
  Holding shift fails to display grub2 menu

Status in “grub2” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: grub2

  Grub2 has switched away from a minimum 1 second delay to hit enter, in
  preference to simply holding down shift during the boot sequence.
  However, this behaviour doesn't work on all machines.

  Further, many users will only learn this after their machine fails to
  boot normally, leaving them unable to boot at all without outside
  assistance.

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