Load ACPI when turned off in loader.con (also: no ACPI panics in ata probe in 7-current)

Martin Cracauer cracauer at cons.org
Sat Sep 3 18:40:42 PDT 2005

Pascal Hofstee wrote on Sat, Sep 03, 2005 at 06:11:57PM -0700: 
> On Sat, 2005-09-03 at 21:02 -0400, Martin Cracauer wrote:
> > I just turned ACPI off in loader.conf.
> > 
> > Unfortunately it turns out that 7-current on my dual Opteron (Armima
> > HDAMB) panics in ata probe when ACPI is off (bug report to follow).
> > 
> > That means I cannot even get into single user mode.  I need to load
> > ACPI from the loader prompt before booting the kernel.
> > 
> > I tried "load acpi" which does not report an error, but neither a
> > loaded module.  Booting the kernel afterwards leads to the same panic.
> > 
> > Next I tried to unload the kernel first, but a "load acpi" just loads
> > the kernel module, not the acpi module.  I assume this is due to me
> > having it turned off in loader.conf.
> > 
> > What is the right procedure to do this? Can I tell the bootloader to
> > ignore loader.conf?
> Have you tried setting hint.acpi.0.disabled=0  at the boot loader
> prompt ?

I assume you mean `set hint.acpi.0.disabled=0`.

Yes, I tried, and `show` shows it to be zero.

It doesn't work either.  Setting this, unloading everything and then
loading acpi shows the same behavior as before.  `load acpi` loads the
kernel, no acpi, and a subsequent boot panics.

Martin Cracauer <cracauer at cons.org>   http://www.cons.org/cracauer/
FreeBSD - where you want to go, today.      http://www.freebsd.org/

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