Bug#544155: [grub-pc] grub update renders system unbootable (unaligned pointer 0x700ba)

[Witold Baryluk]

Dnia 2009-08-31, pon o godzinie 10:31 +0200, Felix Zielcke pisze: 
> retitle 544155 gfxterm breaks booting on Thinkpads
> thanks

> 
> But I suggest you remove from debian/control all packages you don't
> need, else compiling will take unnecessary long.
> The debian/ directory should work with all upstream revisions between
> 2549 (beta1) and 2488 (1.96+20090808)

> 
> If that patch isn't the reason for the break, I think it would be good
> to reverse 2494, 2527 or 2494
> The others don't look like they could cause this.
> 

As pointed in another post, 1bit_blitters.diff doesn't resolve
antything.

I started bisection, and this are my first results:

Last good revision: 2531
First bad revision: 2532

2531 boots fine.
2532 gives unaligned pointer.

but, this looks like problem in configuration,
because diff with previous version is mostyly about kfreebsd stuff and
generating configuration.

This is difference beetwen my grub.cfg in this two revisions:

sredniczarny:~/grub/s> cat 2531-2532.diff 
9a10,22
> insmod ext2
> set root=(hd0,1)
> search --no-floppy --fs-uuid --set 2ea38c72-9f58-41d1-88d7-c881edc92d15
> if loadfont /grub/unicode.pf2 ; then
>   set gfxmode=640x480
>   insmod gfxterm
>   insmod vbe
>   if terminal_output gfxterm ; then true ; else
>     # For backward compatibility with versions of terminal.mod that don't
>     # understand terminal_output
>     terminal gfxterm
>   fi
> fi
14,15c27,37
< set menu_color_normal=cyan/blue
< set menu_color_highlight=white/blue
---
> insmod ext2
> set root=(hd0,1)
> search --no-floppy --fs-uuid --set 2ea38c72-9f58-41d1-88d7-c881edc92d15
> insmod png
> if background_image /grub/moreblue-orbit-grub.png ; then
>   set color_normal=black/black
>   set color_highlight=magenta/black
> else
>   set menu_color_normal=cyan/blue
>   set menu_color_highlight=white/blue
> fi

So i will probably need to bisect again, this time using explicit
commands each time. And testing if ie. tab completion works in them.

-- 
Witold Baryluk
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