OpenBSD Speed Step on the Thinkpad T43

Hello Eke,

with respect to your posting on
http://www.openbsd.org/i386-laptop.html
about the Lenovo Thinkpad T43:

> I'm uncertain whether APM (SpeedStep) works - sysctl(8) lacks 
> hw.setperf, the dmesg identifies some "apm0 at bios0: Power Management
> spec V1.2" stuff anyway, BIOS settings at factory default of SpeedStep
> enabled.

I'd like to mention that if you set the speedstep settings in the BIOS
to "automatic", the T43 behaves as you post, but if you change the
settings to maximum battery life (Config->Power->Speedstep), speed step
becomes available to apmd. hw.setperf is available and the CPU freq is
variable between 600MHz and 2.0GHz with apm -L, apm -H, also
automatically with apm -A.

This is OpenBSD 3.9 stable.

Regards,
Chris.