oberman at es.net
Thu May 14 04:04:58 UTC 2009
> From: "Alexandre \"Sunny\" Kovalenko" <gaijin.k at gmail.com>
> Date: Wed, 13 May 2009 20:36:10 -0400
> On Wed, 2009-05-13 at 17:17 -0300, Sylvio CÃ©sar Teixeira Amorim wrote:
> > Kevin,
> > my laptop is Intel Core 2 duo 2.26, FSB 1066Mhz, DDR3.
> > my sysctl
> > hw.acipi.thermal.tz0._PSV: -1
> > hw.acipi.thermal.tz0._CRT: 107.0C
> Please, do not top-post -- it makes it harder to follow the thread.
> Do you by any chance have message to the tune of
> "acpi_tz0: _PSV value is absurd, ignored..."
> in you boot log? "grep absurd /var/log/messages" should give you the
> answer to this question.
> If answer is "yes" and you are willing to override your ASL, dump it
> according to the "Handbook" instructions and put it somewhere, I can get
> to it.
> As an alternative, you can add
> to /etc/sysctl.conf. This might or might not work as BIOS might tell OS
> to reevaluate _PSV and restore absurd value. You should replace 75C with
> the value you have in mind for your system.
A Core2 Duo system can run VERY hot without a problem. You may note that
_CRT is 107. That is possibly correct. Three 2.26 GHz chips, all P8400s,
are speced at 105C. There is no thermal spec listed for the SP9300,
though. In any case, 88C is certainly well within normal operating
parameters for this processor, but you can certainly force _PSV to
whatever you like. Just remember that it will slow the system by at least
12.5% and maybe more.
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at es.net Phone: +1 510 486-8634
Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751
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