[Bug 1258597] Re: Warning: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported.

[Nathan Stratton Treadway]

It looks like the GRUB_HIDDEN_TIMEOUT line in the /usr/share/grub/default/grub file comes from the setting at about line 60 of the debian/rules file for the grub2 source package (
  http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/trusty/grub2/trusty/view/head:/debian/rules
) :

ifeq (yes,$(shell dpkg-vendor --derives-from Ubuntu && echo yes))
DEFAULT_CMDLINE := quiet splash
DEFAULT_TIMEOUT := 10
DEFAULT_HIDDEN_TIMEOUT := 0

followed by
ifneq (,$(DEFAULT_HIDDEN_TIMEOUT))
	perl -pi -e 's/^GRUB_TIMEOUT=.*/GRUB_HIDDEN_TIMEOUT=0\nGRUB_HIDDEN_TIMEOUT_QUIET=true\n$$&/' \
		debian/grub2-common/usr/share/grub/default/grub
at about line 367.

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https://bugs.launchpad.net/bugs/1258597

Title:
  Warning: Setting GRUB_TIMEOUT to a non-zero value when
  GRUB_HIDDEN_TIMEOUT is set is no longer supported.

Status in “grub2” package in Ubuntu:
  Triaged
Status in “grub2” source package in Trusty:
  Triaged

Bug description:
  When running update-grub I am getting the following message:

  Warning: Setting GRUB_TIMEOUT to a non-zero value when
  GRUB_HIDDEN_TIMEOUT is set is no longer supported.

  $ sudo update-grub
  Generowanie grub.cfg...
  Uwaga: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported.
  Znaleziono obraz Linuksa: /boot/vmlinuz-3.12.0-6-generic
  Znaleziono obraz initrd: /boot/initrd.img-3.12.0-6-generic
  Found memtest86+ image: /boot/memtest86+.elf
  gotowe

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: grub2 (not installed)
  ProcVersionSignature: Ubuntu 3.12.0-6.14-generic 3.12.3
  Uname: Linux 3.12.0-6-generic x86_64
  ApportVersion: 2.12.7-0ubuntu1
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Fri Dec  6 18:49:28 2013
  InstallationDate: Installed on 2013-10-15 (51 days ago)
  InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Release amd64 (20131015)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=pl_PL.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub2
  UpgradeStatus: Upgraded to trusty on 2013-11-05 (31 days ago)

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