What version of acpi is supported?

[Steve Kargl]

On Tue, Jul 15, 2008 at 04:02:31PM -0700, Nate Lawson wrote:
> Steve Kargl wrote:
> >On Tue, Jul 15, 2008 at 03:30:04PM -0700, Nate Lawson wrote:
> >>Steve Kargl wrote:
> >>>I have several ASUS KFSN4-DRE motherboards.  The BIOS
> >>>allows one to select acpi version 1, 2, or 3 where 3
> >>>is the defaults.  Under heavy load and acpi v3, these
> >>>motherboards shut themselves off.  The boards appear
> >>>to be stable if I select v1.  So what, version of 
> >>>acpi does FreeBSD support?
> >>>
> >>Most of 1, a lot of 2, a little of 3.
> >
> >So does v2 or 3 must have a (low?) thermal protection
> >mechanism that shuts down a system?  And, can the
> >threshold be tweaked?
> 
> It doesn't work that way.  When you specify a version to the BIOS, it 
> changes the AML (byte code) that it exports to the OS.  Depending on 
> what we do (or don't do) with it, the BIOS is deciding at some point it 
> doesn't like the OS behavior and shuts down.  It could be anything. 
> You'd have to look at the AML to figure out what we're poking or not 
> poking that the BIOS isn't happy with.

I was afraid you (or someone) would say something like the above.
I used acpidump to get an ASL file, but it was after I booted with
v1.  It appears that I have a lot to learn about the crypted ASL.

> 
> Are you loading cpufreq?
> 

No.

-- 
Steve