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

Hajimu UMEMOTO ume at freebsd.org
Tue Jul 31 06:43:22 UTC 2007


>>>>> 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

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.  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.


Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
ume at mahoroba.org  ume@{,jp.}FreeBSD.org

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