Speedstep on centrino

From: Alexander Hoogerhuis
Date: Sat Apr 17 2004 - 20:58:44 EST

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.

Using SpeedStep for Centrino og gived me this line on boot:
speedstep-centrino: found "Intel(R) Pentium(R) M processor 1600MHz": max frequency: 1600000kHz

This seems to work and make the battery last an useful amount of time.

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

Alexander Hoogerhuis | alexh@xxxxxxxx
CCNP - CCDP - MCNE - CCSE | +47 908 21 485
"You have zero privacy anyway. Get over it." --Scott McNealy
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