BTW, dualhead with Nouveau does work if Optimus is disabled, however right now it appears to be highly unstable. In my case it often hangs on boot or after some time during work, longest it worked for me was about couple hours.

Thanks for the info! I'll try it on my W520.

BTW, constant BSODs in Windows 7 can be cured by installing Lenovo System Update utility and installing all drivers and windows updates through it before proceeding with standard MS Update. At least that worked for me with Windows 7 Professional x64 in UEFI mode.

moonwalker: I just tested Ubuntu 11.04 x64 in UEFI mode since I had the alternate CD laying around. Grub 2 is a mess in Ubuntu under UEFI mode, so I just wanted to make sure I know how Grub 2 works in Debian.

1. Does installing the grub-efi-amd64 package automatically create the /boot/efi/EFI/debian folder (assuming I already mounted the EFI partition)?

2. Are the Grub 2 configuration files stored in /boot/grub or /boot/efi/EFI/debian?

3. If the configuration files are stored in /boot/efi/EFI/debian, does update-grub create the grub.cfg file in the correct directory?

Thanks in advance.

I'm not sure what exactly you're referring to with "Grub 2 is a mess in Ubuntu under UEFI mode" as the only issue I've encountered with Ubuntu 11.04 UEFI boot is that I had to use noefi kernel option as with any linux <3.0.0rc2, otherwise it either hangs or reboots immediately after bootloader. As to your questions...:
1. No, you need to use the grub-install command to do that.
2. Standard location, "/boot/grub/". "/boot/efi/" is used strictly for efi files. Or at least should.
3. update-grub does a proper good job of updating grub configuration based on "/etc/default/grub" data. Add in that file 'GRUB_PRELOAD_MODULES="efi_gop"' if you have problems with no visible output after bootloader, it may be unnecessary though if you use KMS+Plymouth but is an absolute must if you have encrypted drives that ask for password before kernel sets the graphical mode. And add "reboot=a,w" in kernel options if it panics on reboot, there is 3.0.0-1 in Debian Unstable repositories already that may have that issue fixed but I haven't tested it yet.

EDIT: Looks like in latest 3.0.0-1 kernel "reboot=a,w" option is not needed anymore, but not because it warm-reboots using a windows-like workaround of the UEFI implementation bug. It rather forces a cold reboot each time, at least in UEFI mode.

What I meant was that Ubuntu's Grub tries to load "/boot/efi/EFI/grub/grub.cfg" while update-grub only creates "/boot/grub/grub.cfg". So every time I install a new kernel or edit "/etc/default/grub" I have to run:

Does Debian do the same thing?

Thank you for your time!

Hm, check "--boot-directory=/boot" parameter for grub-install. I might be wrong as I don't remember ever having a need to use anything besides --no-floppy --recheck --force and the boot device itself (/dev/sda usually ), but that should force it to install all it's files including grub.cfg into /boot/grub. Except for the grubx64.efi which should go into /boot/efi/EFI/<distibution_or_vendor_name>/grubx64.efi by default, in case of ubuntu that should be something like /boot/efi/EFI/ubuntu/grubx64.efi.

Thank you!! That fixed Ubuntu's UEFI problems (the --boot-directory=/boot) and I also have Debian installed now with your instructions