MacBook users: possible fix for the SMP problem

Rui Paulo rpaulo at
Wed Nov 7 13:56:42 PST 2007

On Nov 7, 2007 9:12 PM, Mark Tinguely <tinguely at> wrote:
> >  I don't really like the fact that it has to be turned on manually. Is it
> >  possible to make this automatic based on BIOS Id or something like this?
> >
> >  -Maxim
> (Thread summary because of text removal - "On some systems, namely MacBooks
>  we need to disallow the legacy USB circuit to generate an SMI# because this
>  can  cause several problems, namely: incorrect CPU frequency detection and
>  failure to start the APs." - taken from patch explaination).
> This sounds like a great compiler option / C code definition. It can be
> compiled into kernel and left as the default if you need it. It should
> not go into GENERIC.

No, I don't like that because it makes us look very bad if you can't
install FreeBSD on a MacBook because the kernel hangs very early on

Rui Paulo

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