From: Matthew Garrett <mjg59@srcf.ucam.org>
To: "Sune Mølgaard" <sune@molgaard.org>
Cc: linux-acpi@vger.kernel.org
Subject: Re: Frequency scaling, Dell Inspiron 6000
Date: Mon, 30 Jul 2007 01:44:24 +0100 [thread overview]
Message-ID: <20070730004423.GA27398@srcf.ucam.org> (raw)
In-Reply-To: <46AC9E33.3020008@molgaard.org>
On Sun, Jul 29, 2007 at 04:03:31PM +0200, Sune Mølgaard wrote:
> The CPU of the machine is labeled as centrino compliant, but is in fact
> a Celeron-M, and hence does not support _Enhanced_ Speedstep. However, I
> clearly remember having frequency scaling working with Ubuntu kernel
> 2.6.15, but failing with Ubuntu 2.6.17 (possibly with some 2.6.18 code
> backported).
It doesn't support Speedstep at all. You were probably using p4-clockmod
in the past, which is a mechanism for temperature control rather than
any sort of useful power saving.
--
Matthew Garrett | mjg59@srcf.ucam.org
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next prev parent reply other threads:[~2007-07-30 1:20 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-29 14:03 Frequency scaling, Dell Inspiron 6000 Sune Mølgaard
2007-07-30 0:44 ` Matthew Garrett [this message]
2007-07-30 13:26 ` Sune Mølgaard
2007-07-30 18:01 ` Matthew Garrett
2007-07-30 18:18 ` Sune Mølgaard
2007-07-30 18:22 ` Matthew Garrett
2007-07-30 18:32 ` Sune Mølgaard
2007-07-30 19:00 ` Matthew Garrett
2007-07-30 19:40 ` Sune Mølgaard
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