MacBook users: possible fix for the SMP problem

Attilio Rao attilio at
Wed Nov 7 08:14:18 PST 2007

2007/11/7, Rui Paulo <rpaulo at>:
> If you have a MacBook, you now need to set hw.ich.disable_legacy_usb
> on the boot loader prompt or in loader.conf. I decided to go this
> route because it seems safer. Imagine the case where there's a port at
> the same IO address that has nothing to do with the ICH7. If we tried
> to issue the outl() on every system, something bad could happen.

I would prefer to let it autotune by the system, if possible, in this situation.

Great work,

Peace can only be achieved by understanding - A. Einstein

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