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Date: Tue, 1 Aug 2006 17:11:56 +0200
To: Ed Schouten <ed@fxq.nl>
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From: Bruno Ducrot <ducrot@poupinou.org>
Cc: FreeBSD ACPI <freebsd-acpi@freebsd.org>,
	FreeBSD Stable <freebsd-stable@freebsd.org>
Subject: Re: Odd PCI and ACPI messages on 'INSYDE RSDT_000' laptop
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On Mon, Jul 31, 2006 at 12:33:58AM +0200, Ed Schouten wrote:
> Hello,
> 
> Last week I got a laptop from a few friends of mine with a broken
> screen. I removed the screen from the device and connected a regular CRT
> to it to install FreeBSD 6.1 on it for serving as a jukebox (silent,
> doesn't consume too much power).
> 
> I first tried FreeSBIE 1.1, which just deadlocked during the bootsplash.
> After that I downloaded a FreeBSD 6.1 CD. When I boot FreeBSD 6.1
> without the ACPI kernel module, it panics (fatal trap 12) right after
> probing uhci0. When I boot with ACPI, it boots like it should. Because
> the laptop doesn't have a serial connector, I didn't copy the kernel
> backtrace. If it is really needed, I'll boot the CD once again and type
> over the screen contents.
> 
> Anyway, I installed FreeBSD 6.1 on it, with the ACPI module loaded, but
> I still get some really strange messages in my dmesg I thought would be
> useful to mention:
> 
> | ...
> | cpu0: <ACPI CPU> on acpi0
> | acpi_perf0: <ACPI CPU Frequency Control> on cpu0
> | acpi_perf0: failed in PERF_STATUS attach
> | device_attach: acpi_perf0 attach returned 6
> | ...
> | acpi_perf0: <ACPI CPU Frequency Control> on cpu0
> | acpi_perf0: failed in PERF_STATUS attach
> | device_attach: acpi_perf0 attach returned 6
> | ...


This means you can't get configuration for speedstep on this processor
via ACPI because something is broken into the bios.

But since we have that:

> CPU: Intel(R) Pentium(R) M processor 1500MHz (1498.73-MHz 686-class CPU)
>   Origin = "GenuineIntel"  Id = 0x695  Stepping = 5
                                    ^^^
speedstep should work if you put:
cpufreq_load="YES"
into /boot/loader.conf
and you don't need acpi_perf anyway.

-- 
Bruno Ducrot

--  Which is worse:  ignorance or apathy?
--  Don't know.  Don't care.