[Bug 2080785] Re: Wrong defaults after (deprecated) changes: #GRUB_TIMEOUT_STYLE

[Mate Kukri]

> And all, despite of everything in order, only because someone had
decided that "hidden" is now supposed to be followed strictly and
actually hide the grub menu irrespective.

I am not aware of such a change being made recently, at least I
certainly did not make such a change over the last 12 months I've been
involved with GRUB maintenance in Ubuntu.

I think the menu is still supposed to show when you have os-prober
entries for other OS entries, and you definitely not have to manually
edit grub defaults to have a dual boot menu. Last time I've tested this
behaviour did work. If it does not work like that anymore, that's an
unintentional regression that needs to be reproduced and fixed.

Basically the accepted answer on the askubuntu page is simply not
correct, no such change was made, the code to set a timeout when os-
prober entries exists is still very much in there, if it doesn't work
it's a bug.

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https://bugs.launchpad.net/bugs/2080785

Title:
  Wrong defaults after (deprecated) changes: #GRUB_TIMEOUT_STYLE

Status in grub2 package in Ubuntu:
  Incomplete

Bug description:
  #GRUB_TIMEOUT_STYLE=hidden 
  has been default setting for at least a decade, also here on my various machines with multiple OSes. It did work in a reasonable manner: (wiki.ubuntuusers.de/GRUB_2/Konfiguration) "Die Einstellung hidden bzw. countdown wird ignoriert und das GRUB-Menü immer angezeigt, wenn mehr als ein Betriebssystem von GRUB verwaltet wird." (With more than one OSes being bootable through grub, the setting 'hidden' will be ignored).
  This made sense for single OSes (no need to show, and if, with Esc), as well as with multiple OSes (showing the OS that is going to come up). With my recent update (release), suddenly no more grub menu showed. 
  According to https://askubuntu.com/questions/1526795/grub-menu-doesnt-show-any-longer one had to set this grub variable to "menu". Immediately the grub menu popped up again. 
  All the hassle around this would have been unnecessary without the changed behaviour of grub with the identical variable. (While this change could be questioned, this is not my concern here.)

  It is an unnecessary bug behaviour to change items with the identical
  parameter. For security and user convenience, either the grub default
  ought to have been set to the 'safe' (no loss of OS) value of "menu",
  or a new parameter introduced; keeping the behaviour of existing
  parameters as such (and eventually only withdrawn after extended times
  of deprecation, if at all).

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: grub2-common 2.12-1ubuntu7
  ProcVersionSignature: Ubuntu 6.8.0-44.44-generic 6.8.12
  Uname: Linux 6.8.0-44-generic x86_64
  ApportVersion: 2.28.1-0ubuntu3.1
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: KDE
  Date: Sun Sep 15 18:27:31 2024
  InstallationDate: Installed on 2021-08-07 (1135 days ago)
  InstallationMedia: Kubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1)
  SourcePackage: grub2
  UpgradeStatus: Upgraded to noble on 2024-08-30 (16 days ago)
  mtime.conffile..etc.init.d.apport: 2024-07-22T16:59:07

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