Date: Tue, 15 Jul 2008 16:19:26 -0700 From: Nate Lawson <nate@root.org> To: Steve Kargl <sgk@troutmask.apl.washington.edu> Cc: freebsd-acpi@freebsd.org Subject: Re: What version of acpi is supported? Message-ID: <487D307E.5020501@root.org> In-Reply-To: <20080715231401.GA83158@troutmask.apl.washington.edu> References: <20080715222449.GA82931@troutmask.apl.washington.edu> <487D24EC.30900@root.org> <20080715223638.GB82931@troutmask.apl.washington.edu> <487D2C87.3020209@root.org> <20080715231401.GA83158@troutmask.apl.washington.edu>
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Steve Kargl wrote: > 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. It might be that your BIOS requires you to have cpufreq if you ask it for acpi v2+. -Nate
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