linux-kernel - Re: AMD Quad Core clock problem?

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Message-ID: <20080411213843.GH2160@csclub.uwaterloo.ca>
Date:	Fri, 11 Apr 2008 17:38:43 -0400
From:	lsorense@...lub.uwaterloo.ca (Lennart Sorensen)
To:	Marc Perkel <mperkel@...oo.com>
Cc:	Chris Snook <csnook@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: AMD Quad Core clock problem?

On Fri, Apr 11, 2008 at 02:36:31PM -0700, Marc Perkel wrote:
> No - it's not wild like it was back in the early X2
> days and I think you're right about the drift being
> normal. Interesting thing though I am running ntpd and
> it's not working. I am fairly sure the ntp.conf file
> is exactly as it was installed by fedora. I'm now
> looking into that.
> 
> Thanks for your help. Sorry for the false alarm. But
> if thee was an issue I thought you would want to know
> it.

I have found that ntp tends to fail to work on any machine with spread
spectrum clocking enabled.  On those machines disabling spread specturm
in the BIOS seems to fix it.  I had to update the BIOS on one machine to
even get the option to disable it though.

-- 
Len Sorensen
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