powernowd and laptop mode

[Matt Zimmerman]

On Mon, Mar 28, 2005 at 06:15:02PM +0200, Luis Lopez Lopez wrote:

> At this moment when I boot my laptop disconnect from AC the laptop mode
> is activated and powernowd is started. 
> Is this correct? I think the answer is 'no', reason:

No, powernowd runs continuously.

> - With powernowd running if I start some app powernowd puts CPU at max.
> speed with the consecuent power consume.
> 
> I think that powernowd only should be started if laptop is connected to
> AC, otherwise it should not be started and all the CPUs should be set to
> min. frequency. For those who prefer the old behaviour a setting
> from /etc/default/{powernowd,acpi-support} can do the job.

The idea of powernowd is to save power by dynamically adjusting the CPU
frequency.  If the CPU is busy, it will run faster, and if it is idle, it
will run more slowly.  If what you want is to lock the CPU at a specific
frequency, you don't want powernowd.

-- 
 - mdz