From owner-freebsd-drivers@FreeBSD.ORG  Mon Nov 11 18:17:09 2013
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From: Nicholas McKenzie <nicholassmckenzie@gmail.com>
Date: Mon, 11 Nov 2013 10:16:47 -0800
Message-ID: <CACZJ7toKu34Vz4Ejxa0URoytry-xTT24y6jeoe3DY=QvDPoXKg@mail.gmail.com>
Subject: Re: Problems with amd FX 8 core and freq scaling
To: Drivers <freebsd-drivers@freebsd.org>, amd64 <freebsd-amd64@freebsd.org>
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But wouldn't this just disable frequency scaling and the whole point of powerd?


On Mon, Nov 11, 2013 at 1:46 AM, Stefan Esser <se@freebsd.org> wrote:
>
> Am 10.11.2013 22:46, schrieb Nicholas Stewart McKenzie:
> > My computer crashes if I enable powerd. I can't get cpu freq scaling to
> > work with my cpu:(P.S. I sent this to both drivers and amd64 mailing
> > list...
>
> Hi,
>
> you may want to try booting with the following line added to
> /boot/loader.conf (or entered at the boot menu prompt after
> breaking out of automatic boot):
>
> hint.acpi_throttle.0.disabled="1"
>
> There have been a number of reports of throttling causing
> crashes. This setting does not prevent powerd from adjusting
> your CPU's clock, it just disables some arcane feature which
> pre-dates the modern power management methods.
>
> Regards, STefan




-- 

Nicholas S. McKenzie
NicholasSMcKenzie@gmail.com
+1.530.355.6171