Bug#753548: grub-efi-amd64: Grub does not boot Jessie in EFI mode, but does boot in CSM/legacy mode

[Sander Marechal]

Package: grub-efi-amd64
Severity: normal

Dear Maintainer,

I am trying to install Debian Jessie on a new Toshiba Satellite
C55-A-1ND laptop. This laptop is UEFI-capable
and comes preinstalled with Windows 8. The Jessie netinst image from
july 2nd, 2014 works fine for installing the system
in UEFI mode. Both the text-mode as graphics-mode installers work.
However, after installation the system is unable to boot.

I get grub menu where I can choose Debian, but the boot process hangs
right after "loading initial ramdisk". I tried booting
the system manually using the grub commandline but that doesn't work
either. The "linux" and "initrd" lines work without
any errors, but after the "boot" command nothing happens and the system
becomes unresponsive. All I can do is reboot using
Ctrl+Alt+Del. Nothing happens at boot time. The screen isn't even
blanked. All I see is the "loading initial ramdisk"
message and a (non-blinking) cursor on the line below.

The exact same installation works fine when installed under legacy BIOS
settings. I am typing this bugreport from the same
Debian installation on the same PC just installen under CSM/legacy boot.
The system boots fine. So I am sure it's not a
graphics issue or something like that where the kernel does boot but you
just don't see anything.

Perhaps it's a bug in grub-efi-amd64, perhaps a bug with how the initrd
image is generated for EFI systems. Perhaps it's a
kernel problem. I don't know. I am assigning this to grub-efi-amd64
because this appears to be an EFI specific bug.
Please reassign if this bug belongs somewhere else.

-- System Information:
Debian Release: jessie/sid
   APT prefers testing-updates
   APT policy: (500, 'testing-updates'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.14-1-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