Subject: Re: Laptops & CPU frequency
From: Xavier Bestel <xavier.bestel@free.fr>
To: Robert Love <rml@ximian.com>
Cc: jlnance@unity.ncsu.edu,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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References: <20040111025623.GA19890@ncsu.edu>
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Date: Sun, 11 Jan 2004 11:27:39 +0100
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Le dim 11/01/2004 ? 04:17, Robert Love a ?crit :
> On Sat, 2004-01-10 at 21:56, jlnance@unity.ncsu.edu wrote:
> 
> >     The frequency displayed in /proc/cpuinfo does not change if the AC
> > adapter is toggled on or off after the machine has booted.  It stays
> > in the same mode as it was booted into.  I am curious if this is because
> > the CPU frequency really is not changing, or if it is because the
> > number in /proc/cpuinfo is only calculated at boot.
> 
> The MHz value in /proc/cpuinfo should be updated as the CPU speed
> changes - that is, it is not calculated just at boot, but it is updated
> as the speed actually changes.

2.6.0 doesn't do that on my laptop. Moreover, if I ever boot on battery,
when switching to AC power, lots of things fail (mouse is jerky, pcmcia
doesn't work ...)

	Xav

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