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Date: Wed, 8 Apr 2009 17:21:57 +0200 (CEST)
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From: Oliver Fromme <olli@lurza.secnetix.de>
To: freebsd-questions@FreeBSD.ORG, davidcollins001@gmail.com
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Cc: 
Subject: Re: powerd
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David Collins wrote:
 > viper:~$ sudo powerd
 > powerd: lookup freq: No such file or directory
 > 
 > I also have the following
 > 
 > viper:~$ sysctl dev.cpu
 > dev.cpu.0.%desc: ACPI CPU
 > dev.cpu.0.%driver: cpu
 > dev.cpu.0.%location: handle=\_PR_.CPU_
 > dev.cpu.0.%pnpinfo: _HID=none _UID=0
 > dev.cpu.0.%parent: acpi0
 > dev.cpu.0.cx_supported: C1/0
 > dev.cpu.0.cx_lowest: C1
 > dev.cpu.0.cx_usage: 100.00%
 > dev.cpu.1.%desc: ACPI CPU
 > dev.cpu.1.%driver: cpu
 > dev.cpu.1.%location: handle=\_PR_.CPU1
 > dev.cpu.1.%pnpinfo: _HID=none _UID=0
 > dev.cpu.1.%parent: acpi0
 > dev.cpu.1.cx_supported: C1/0
 > dev.cpu.1.cx_lowest: C1
 > dev.cpu.1.cx_usage: 100.00%

Frequency control is not supported in your case.  You must
have dev.cpu.0.freq and so on.  What kind of processor do
you have?  Does it support "powernow", "cool'n'quiet" or
similar features?

Also, make sure that you have "device cpufreq" in your
kernel configuration.  If you don't have it, try to load
the module:  kldload cpufreq

Best regards
   Oliver

-- 
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