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From: Erich Dollansky <erich@apsara.com.sg>
Organization: apsara green technology pte ltd
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X-Mailman-Approved-At: Tue, 07 Jul 2009 02:34:49 +0000
Cc: Rene Schickbauer <cavac@magicbooks.org>
Subject: Re: RFC: powerd Patch & proposed future changes
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Hi,

On 06 July 2009 pm 15:22:58 Rene Schickbauer wrote:
>
> Would it also make sense to have powerd run an (optional) user
> configureable script on ac state change? I'm thinking about
> things like dimming TFT backlight, on EEE PC turning of the
> webcam and so on.
>
I did some work on powerd to regulate the speed better but never 
finished it. Let me share my experience.

Yes, it makes sense that powerd is enabled to run external 
programs triggered by events powerd has to monitor.

I would not limit it to AC/DC changes. powerd could also run 
external programs when falling below a certain speed and coming 
back above a certain speed again.

This would allow also to dim the LCD when less power is used 
because notbody is using the screen. It might will not make sense 
for most uses but for some.

powerd's main idea is to save energy. Allowing a second program to 
parse through a file is not what will save energy.

Erich