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Date: Thu, 8 Sep 2005 12:19:43 -0400
From: William Lam <antitoch@gmail.com>
To: freebsd-current@freebsd.org
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Subject: cpufreq & Pentium III-M
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Hi, I'm having some problems with cpu throttling on my Portege 2010 on
-current. On or off AC the CPU is always at maximum clockrate.

dev.cpu.0.%desc: ACPI CPU
dev.cpu.0.%driver: cpu
dev.cpu.0.%location: handle=3D\_PR_.CPU0
dev.cpu.0.%pnpinfo: _HID=3Dnone _UID=3D0
dev.cpu.0.%parent: acpi0
dev.cpu.0.freq: 866
dev.cpu.0.freq_levels: 866/22000 400/9800

Trying to set dev.cpu.0.freq to 400 only displays this on the console:

acpi_perf0: Px transition to 400 failed
acpi_perf0: set freq failed, err 6

Disabling acpi_perf with hint.acpi_perf.0.disabled=3D1 dosn't have any effe=
ct.