[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=13170


Gregory Bellier <dest@gatekeeper.fr> changed:

           What    |Removed                     |Added
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                 CC|                            |dest@gatekeeper.fr




--- Comment #60 from Gregory Bellier <dest@gatekeeper.fr>  2011-02-19 15:58:42 ---
I also have a MacBook 5,2 (early 2009) and I experience the same errors than
you do. This has been tested on Ubuntu 10.10

I managed to build a grub2 1.99rc1 x86_64-efi.
I had to do some tweaks to make some progress. I'm hacking directly in grub.cfg
but from now, I don't care, I just want to test. So here is my entry :
menuentry 'Ubuntu, with Linux 2.6.35-25-generic' --class ubuntu --class
gnu-linux --class gnu --class os {
        insmod part_gpt
        insmod ext2
        set debug=video
        insmod efi_gop
        set root='(hd0,gpt3)'
        search --no-floppy --fs-uuid --set=root
d5175c18-7da2-49a9-a3af-844bad27c91d
        linux   /boot/vmlinuz-2.6.35-25-generic
root=UUID=d5175c18-7da2-49a9-a3af-844bad27c91d ro
        initrd  /boot/initrd.img-2.6.35-25-generic
}

The options are pretty much the same than the ones from my working grub (with
maxcpus=1).

At my first boot, I got "error: no argument specified". From what I've seen on
the internet, it's because the syntax is different between Grub 1.98 and
1.99rc1. In 1.98 it's --set d5175c18... while --set=root is needed for 1.99rc1.
However, this error wasn't a real problem because we're asked to press a key
and then the boot continues.

It continues until the second error: "error: no suitable mode found". I've
resolved this error by putting "set debug=video" and  "insmod efi_gop" in my
grub entry.

>From this point, I can see that the kernel starts booting until the error I now
have which I haven't solved yet : "fb: conflicting fb hw usage nouveaufb vs EFI
VGA - removing generic driver".

I hope this post will help some of you to make some progress until the point
I've reached.

I also tried what comment #58 detailed but I have the very same error :
conflicting fb...

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