[Nouveau] [Bug 34508] New: [grub x86_64-efi] Macbook 5, 2 - conflicting fb hw usage nouveaufb vs EFI VGA - removing generic driver

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=34508

           Summary: [grub x86_64-efi] Macbook 5,2 - conflicting fb hw
                    usage nouveaufb vs EFI VGA - removing generic driver
           Product: xorg
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: blocker
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: dest at gatekeeper.fr
         QAContact: xorg-team at lists.x.org


I have a MacBook 5,2 equiped with a Nvidia 9400M. On this machine, I have the
following bug https://bugs.launchpad.net/acpi/+bug/341230 which is also
reported here : http://bugzilla.kernel.org/show_bug.cgi?id=13170

Basically, due to this bug, the OS doesn't boot unless the option maxcpus=1 is
set in grub2. Some people say they managed to have both cores when they built
grub2 for x86_64 for efi.

This is what I've done with grub2 1.99rc1. I run Ubuntu 10.10 Desktop 64bits.
I managed to boot the kernel but when the timestamp is at ~2 seconds, I hit a
bug with this error: "fb: conflicting fb hw usage nouveaufb vs EFI VGA -
removing generic driver".

The screen freezes except the top which has a sort of green-ish square overlay.