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Message-ID: <3a142e750812210514k6dc41c0o32d7ef57e765dcc8@mail.gmail.com>
Date: Sun, 21 Dec 2008 14:14:25 +0100
From: "Paul B. Mahol" <onemda@gmail.com>
To: "Nathan Lay" <nslay@comcast.net>
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References: <494DDA1B.6050206@comcast.net>
Cc: freebsd-current@freebsd.org, freebsd-stable <freebsd-stable@freebsd.org>
Subject: Re: Very serious cooling issues CURRENT/STABLE
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On 12/21/08, Nathan Lay <nslay@comcast.net> wrote:
> acpi.thermal.min_runtime: 0
> hw.acpi.thermal.polling_rate: 10
> hw.acpi.thermal.user_override: 0
> hw.acpi.thermal.tz0.temperature: 37.0C
> hw.acpi.thermal.tz0.active: -1
Is this one ever changed?

> hw.acpi.thermal.tz0.passive_cooling: 1
> hw.acpi.thermal.tz0.thermal_flags: 0
> hw.acpi.thermal.tz0._PSV: 89.5C
> hw.acpi.thermal.tz0._HOT: -1
> hw.acpi.thermal.tz0._CRT: 93.0C
> hw.acpi.thermal.tz0._ACx: -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

This one means that coling will never be used, why:
my output looks like this:
hw.acpi.thermal.tz0._ACx: 85.0C 75.0C 60.0C 50.0C -1 -1 -1 -1 -1 -1

> hw.acpi.thermal.tz0._TC1: 5
> hw.acpi.thermal.tz0._TC2: 4
> hw.acpi.thermal.tz0._TSP: 600

You can play with all thermal values once you enable:
hw.acpi.thermal.user_override

But acpi may redo such values again after some time.
You only real workaround is to use modified acpi ASL:
it is explained in handbook.

In my case I fixed in that way bogus kernel
message "_CRT value is absurd, ignored".


-- 
Paul