[prev in list] [next in list] [prev in thread] [next in thread] 

List:       freebsd-hackers
Subject:    Re: [patch] enhance powerd(8) to handle max temperature
From:       Pietro Cerutti <gahr () gahr ! ch>
Date:       2007-07-31 6:47:40
Message-ID: 46AEDB0C.6070706 () gahr ! ch
[Download RAW message or body]


Hajimu UMEMOTO wrote:
> Hi,
> 
>>>>>> On Tue, 31 Jul 2007 07:54:20 +0200
>>>>>> Pietro Cerutti <gahr@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
code...

> Sincerely,

Thank you

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

-- 
Pietro Cerutti

PGP Public Key:
http://gahr.ch/pgp


["signature.asc" (application/pgp-signature)]

[prev in list] [next in list] [prev in thread] [next in thread]