Re: CPU detection
Ducrot Bruno (poup@poupinou.org)
Wed, 5 Feb 2003 12:08:55 +0100
On Tue, Feb 04, 2003 at 11:01:16PM +0000, Alan Cox wrote:
> On Tue, 2003-02-04 at 18:26, Banai Zoltan wrote:
> > Hi!
> >
> > I have a Toshiba Satelite S2210CDT.
> > There is a problem with detecting CPU frequency.
> > It runs on 258Mhz, but it is an 500Mhz Celeron kernels 2.4.19-pre7-ac4
> > and 2.4.20.
> > i attach the configs and the output of lscpi, /proc/cpu
>
> I trust our measuring code. Most likely the laptop has speedstep so is
> running at 250Mhz to save power. If you've got a currentish -ac kernel
> you can load the speedstep cpufreq support and flip the CPU between fast
> and slow mode as you want. In some cases APM will also do the work for
> you
>
Celerons do not support speedstep, but BIOS can enable throttling (toshiba
like to make that in order to prevent heat issues), then APM idle calls
can perhaps help I guess.
--
Ducrot Bruno
http://www.poupinou.org Page profaissionelle
http://toto.tu-me-saoules.com Haume page
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