grub2 does not propagate variable to submenu

[martin suchanek]

Problem:

grub2 does not propagate variables to submenu -> menuentry. My defined variables defined in 40_custom and properly generated into grub.cfg after update-grub are not set up in submenu. Variables have content only on menuentry level but not in submenu. According to manual the content of variables should be propagated into submenu as well.
   set variable=something #or/and
   export variable=something
Does not work even if they are settled on the beginning of the grub.cfg
some of the variables defined in

How to reproduce problem:
just put some set variable=something in 40_custom , echo variable=$variable in submenu -> menuentry , update-grub and reboot. (I did not try grub-emu)

apt-cache policy grub2
grub2:
  Installed: 2.00-13ubuntu3
  Candidate: 2.00-13ubuntu3
  Version table:
 *** 2.00-13ubuntu3 0
        500 http://localhost/ubuntu/ raring/universe amd64 Packages
        500 http://uk.archive.ubuntu.com/ubuntu/ raring/universe amd64 Packages

Description: Ubuntu 13.04
Release: 13.04
Codename: raring

Kind Regards,
M.

[Andreas Heinlein (aheinlein)]

As you can see from the discussion here:

https://lists.gnu.org/archive/html/grub-devel/2012-03/msg00050.html

this is currently by design. A submenu opens a new 'context' in grub terms, and when you exit the context (go back to the main menu), everything within the submenu context is lost. I personally do not like this, too.

If you really need this functionality, someone has posted a patch in the above thread. I don't know if it works, but you could give it a try.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Marcus Tomlinson (marcustomlinson)]

This release of Ubuntu is no longer receiving maintenance updates. If this is still an issue on a maintained version of Ubuntu please let us know.

[Launchpad Janitor (janitor)]

[Expired for grub2 (Ubuntu) because there has been no activity for 60 days.]