[patch] enhance powerd(8) to handle max temperature

Pietro Cerutti gahr at gahr.ch
Tue Jul 31 06:47:28 UTC 2007

Hajimu UMEMOTO wrote:
> Hi,
>>>>>> On Tue, 31 Jul 2007 07:54:20 +0200
>>>>>> Pietro Cerutti <gahr at gahr.ch> said:
> gahr> Thanks for your help!
> I cannot see _TC1, _TC2 nor _TSP in your `acpidump -dt' output.
> Further, there is no _PSV definition in anywhere, in the first place.
> It seems to me that your ACPI BIOS doesn't support passive cooling at
> all.

Yep that's what I suspected.

> gahr> hw.acpi.thermal.user_override: 1
> gahr> hw.acpi.thermal.tz0._PSV: 80.0C
> I suspect that you set hw.acpi.thermal.tz0._PSV manually.

Yes I did..

> Of cource, it is insufficient to make passive cooling work with your ACPI BIOS,
> and you need the definition of _TC1, _TC2 and _TSP as well.
> If you define apropreate definition of them, passive cooling will
> work.  But, we don't provide overriding the values of them.  Perhaps,
> modifying your ASL (`acpidump -dt' output) to add the definitions of
> _TC1, _TC2, _TSP and _PSV, and loading it from loader will make
> passive cooling work.

Do you have an example? I'm really far from being familiar with the ASL

> Sincerely,

Thank you

> --
> Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
> ume at mahoroba.org  ume@{,jp.}FreeBSD.org
> http://www.imasy.org/~ume/

Pietro Cerutti

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