Re: Laptops & CPU frequency

[Daniel Gryniewicz]

On Wed, 2004-01-14 at 14:17, Robert Love wrote:
> Dave did not mean that the other power management schemes cannot do the
> automatic reduction on loss of AC, just that there is no SMM/BIOS hacks
> to do it automatically.
> 
> Your APM scripts are probably adjusting your CPU speed when you go on
> AC.  Fedora does this, for example.

No APM scripts, no APM even.  I have ACPI, but no acpid, and I don't
currently do anything with ACPI other than get battery status and
temperature.  It also happened before I built in any cpufreq support.

> That is cool - the OS (user-space, even) controls the policy.
> 
> What we don't like is how SpeedStep can be controlled from SMM.

This happens even booted into DOS, so it's definitely a BIOS thing.  I
haven't looked into turning it off, I can check next time I reboot.
-- 
Daniel Gryniewicz <dang@xxxxxxxxxxx>
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