Bug#666018: grub-efi-amd64: fails to boot linux with initrd

[Matthias Hinkfoth]

Package: grub-efi-amd64
Version: 1.98+20100804-14+squeeze1
Severity: critical
Tags: squeeze
Justification: breaks the whole system

Hi,

this my first bug report, so I'd appreciate any hints, how I can do
better. BTW sorry for my english.

I installed squeeze on a computer with an uefi firmware. An ArchLinux
was already installed on this computer, so I installed squeeze on a
separate partition. For booting I used the already installed grub2 of
ArchLinux, which worked fine also for squeeze.
The time I was satisfied with my setup of squeeze, I wanted to get
rid of ArchLinux. This included installing the squeeze package
grub-efi-amd64.
But booting with grub 1.98+20100804-14+squeeze1 failed with a kernel
panic, something like:
	not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

I found out, that this problem is somehow known:
http://william.shallum.net/random-notes/windows-7-linux-uefi-dual-boot

	"Install grub-efi-amd64 from wheezy, not squeeze. Squeeze
	 version doesn't properly pass initrd to the kernel,
	 resulting in the error Kernel Panic ..."

But I couldn't find any bug report on this topic, so here it is.

Because I have no clue what the problem is, I worked around.

I somehow managed, to backport the grub2-source-package of wheezy
(1.99-17 at the time of this writing), and build my own grub2.
(My version is called 1.99-17hinki, as you can see in the system 
information below.)
This one works fine. For testing purpose I installed it in parallel
to the non-working squeeze-grub-efi-amd64. So I could run some tests,
if I knew which.

In my current setup, the squeeze-grub and the wheezy-backported-grub
are using the same configs.

-- System Information:
Debian Release: 6.0.4
  APT prefers stable
  APT policy: (990, 'stable'), (700, 'testing'), (500, 'stable-updates')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-0.bpo.2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages grub-efi-amd64 depends on:
ii  debconf [debconf-2.0]       1.5.36.1     Debian configuration management sy
ii  grub-common                 1.99-17hinki GRand Unified Bootloader (common f
ii  grub-efi-amd64-bin          1.99-17hinki GRand Unified Bootloader, version 
ii  grub2-common                1.99-17hinki GRand Unified Bootloader (common f
ii  ucf                         3.0025+nmu1  Update Configuration File: preserv

grub-efi-amd64 recommends no packages.

grub-efi-amd64 suggests no packages.

-- debconf information excluded