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To: nate@root.org
Cc: clkao@clkao.org, acpi-jp@jp.FreeBSD.org
From: "M. Warner Losh" <imp@bsdimp.com>
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Date: Wed, 17 Mar 2004 05:09:43 +0800
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Subject: [acpi-jp 3113] Re: acpi FADT and throttle problems
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In message: <20040316100826.S95770@root.org>
            Nate Lawson <nate@root.org> writes:
: On Tue, 16 Mar 2004, Chia-liang Kao wrote:
: > I have some problems with throttling my Toshiba 3490.
: >
: > acpidump -t shows me: DUTY_OFFSET=1, DUTY_WIDTH=0 in FADT, so i don't
: > have the hw.acpi.throttle MIB at all. while my dmesg says:
: > CPU: Intel Pentium III (500.02-MHz 686-class CPU)
: >   Origin = "GenuineIntel"  Id = 0x686  Stepping = 6
: >
: > So it looks like it should be able to trottle. Is it possible to
: > override the FADT or fix it somehow?
: 
: Throttling is related to the chipset as well as CPU.  The system designer
: specified 0 for the width for a reason.  You should try the acpi_toshiba
: driver.  It provides throttling sysctls of its own.  If you absolutely
: have to try ACPI throttling, you can just remove the check for cpu_width
: == 0 in acpi_cpu.c.

Sometimes when Chia-liang's notebook resumes, it is in super economy
mode and runs very slowly.  He has tried the acpi_toshiba driver
loaded I believe.  Anything else to try?

Warner
