From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Alexander Hoogerhuis <alexh@boxed.no>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
cpufreq list <cpufreq@www.linux.org.uk>
Subject: Re: Speedstep on centrino
Date: Thu, 22 Apr 2004 20:18:38 +1000 [thread overview]
Message-ID: <1082629118.5672.15.camel@localhost.localdomain> (raw)
In-Reply-To: <87n05aoxpa.fsf@dorker.boxed.no>
On Sun, 2004-04-18 at 11:56, Alexander Hoogerhuis wrote:
> I've been twaddling with getting SpeedStep right on my laptop (HP
> nc6000, 1.6GHz P-M) and noticed a few odd things:
>
> Using regular SpeedStep is says to use speedstep-centrino due to
> voltage regultion, etc.
Yep, that's reasonable.
>
> Using SpeedStep for Centrino og gived me this line on boot:
> speedstep-centrino: found "Intel(R) Pentium(R) M processor 1600MHz": max frequency: 1600000kHz
Looks normal.
> This seems to work and make the battery last an useful amount of time.
Good.
> Using SpeedStep for Centrino with decoding the speeds and voltages
> (CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI) will not yield any output during
> boot regarding cpufreq at all and the battery useage is heavy. ACPI is
> enabled.
I've never managed to get ACPI working on my laptop, so I haven't tested
this. I'm not sure what's going on here - maybe someone on the cpufreq
list can help.
J
next prev parent reply other threads:[~2004-04-22 10:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-18 1:56 Alexander Hoogerhuis
2004-04-22 10:18 ` Jeremy Fitzhardinge [this message]
2004-04-22 14:35 ` Dominik Brodowski
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