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From: John Baldwin <jhb@FreeBSD.org>
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Date: Fri, 29 Oct 2004 14:45:51 -0400
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cc: Daniel Bond <d@niel.no>
Subject: Re: How to disable ACPI in 5.3
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On Thursday 28 October 2004 10:20 pm, Daniel Bond wrote:
> Hello!
>
> I am having difficulties booting FreeBSD 5.3 withou ACPI,
> nothing in my kernelconfig indicates that ACPI is enabled.
> In /boot/device.hints and loader.conf, I have put
> hint.acpi.0.disabled="1", and I have also tried to
> delete/temp move  /boot/kernel/acpi* ..
>
> And in adition to that I'm chosing "2. Boot with ACPI disabled"
> from the bootloader menu.
>
> Yet, still I find ACPI in my kernel:
> dev# kldstat -v | grep acpi
> 		((( kernel.ko )))
>                 196 acpi/fdc
>                 203 acpi/ppc
>                 205 acpi/sio
>                 219 acpi/atpic
>                 221 acpi/attimer
>                 224 acpi/atdma
>                 227 acpi/npxisa
>                 236 acpi/atkbdc
>                 239 acpi/psmcpnp
>
> Is there another way to disable ACPI in 5.3?

That just means the drivers are present, it doesn't mean they are used.  It 
looks like you have 'device acpi' in your kernel config.  The way to tell 
that ACPI is enabled is to look for an acpi0 in your dmesg.  Alternatively, 
you can run devinfo to list your device tree.  If pcib0 is a child of acpi0, 
then you are using ACPI.  If it is a child of legacy0, then you aren't.

-- 
John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org