[Bug 485636] [NEW] Can not disable GRUB2 background image

[Felix Zielcke]

Am Freitag, den 20.11.2009, 03:23 +0000 schrieb evfool:
> Public bug reported:
> 
> Binary package hint: grub2
> 
> After setting a grub2 background in /etc/grub.d/05_debian_theme by
> setting the use_bg=true, and setting the image name, running
> update-grub2 sets the background, at next reboot it is displayed. If i
> set a non-existent image file name, update-grub2 throws an interesting
> error message "Generating grub.cfg ...
> No path or device is specified.
> Try ``grub-probe --help'' for more information.
> No path or device is specified.
> Try ``grub-probe --help'' for more information." This message is not
> very friendly, and gives no meaningful information. 

This of course shouldn't happen.

> The other, and more serious problem is that after setting the use_bg
> to false with an existent and working background image, update-grub2
> and restart, the image is still shown. The only way to set grub2 back
> to console-only mode is to set use_bg to false, and the imagename to a
> non-existent image filename. This way after update-grub2 and restart,
> I get the console grub2 menu again.
> 

Uhm I'm a bit unsure if you understand basic shell scripting.
If you change 
 if ${use_bg} ; then
to
 if false ; then
or 
        echo "Found Debian background: `basename ${bg}`" >&2
        use_bg=true
if you change this use_bg= to false it has the same effect.
And I just tested both now to be sure.
Note that it doestn't count what update-grub outputs or 00_header says
for the real GRUB. Only /boot/grub/grub.cfg counts for it.
If there's no background_image line in it, it will never use one.

-- 
Felix Zielcke
Proud Debian Maintainer and GNU GRUB developer

-- 
Can not disable GRUB2 background image
https://bugs.launchpad.net/bugs/485636
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