linux-kernel - Re: bug? acpi p-state + ondemand keeps dropping max freq

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Message-ID: <20080607145435.4afc9812@infradead.org>
Date:	Sat, 7 Jun 2008 14:54:35 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Pavel Machek <pavel@...e.cz>
Cc:	pavel@...e.cz, auke-jan.h.kok@...el.com,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	len.brown@...el.com, cpufreq@...ts.linux.org.uk,
	davej@...emonkey.org.uk
Subject: Re: bug? acpi p-state + ondemand keeps dropping max freq

On Sat, 7 Jun 2008 23:39:18 +0200
Pavel Machek <pavel@...e.cz> wrote:

> > # echo 1866000 > scaling_max_freq ; cat scaling_max_freq
> > 800000
> > # echo 1866000 > scaling_max_freq ; cat scaling_max_freq
> > 800000
> > 
> > 
> > This renders my Dothan to utterly poor speeds. (standard T43)
> > 
> > performance cpufreq governor makes no difference - I still can't
> > change the frequency upper/lower values.
> 
> Hmm, I have similar problem in Novell bugzilla, on very different hw:
> 
> https://bugzilla.novell.com/show_bug.cgi?id=396311
> 
> 								Pavel
> 


are either of you running gnome-power-manager or kpowersaved ?
sometimes these programs (and more likely, the patches added by a
distro maintainer who doesn't fully realize how power works) tend to
muck with kernel settings around CPU frequency that they have
absolutely no business touching...


-- 
If you want to reach me at my work email, use arjan@...ux.intel.com
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org
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