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From: Francisco Reyes <lists@stringsutils.com>
To: John Baldwin <jhb@freebsd.org>
Date: Tue, 10 Jan 2006 11:10:52 -0500
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Cc: freebsd-acpi@freebsd.org, Nate Lawson <njl@freebsd.org>,
	Ariff Abdullah <ariff@freebsd.org>
Subject: Re: No APM yet for AMD?
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John Baldwin writes:

> It would be nice if we could add the ability to guess the rate based on the 
> amount of power lost in the last interval

I don't know much about ACPI... but that method sounds to me like could be 
very inaccurate. I have noticed a very big difference in drain whether I am 
running text screens or running X. 

> periodically, and if we lost X mAh since the last check and are discharging, 
> assume that is the discharge rate for time calculations)

That would imply a fixed discharge rate, which seems to me is not fixed.

>I've wanted to add this for a while but 
> haven't gotten around to it.

I am totally new at dealing with laptops+FreeBSD... but perhaps others can 
validate my comments... and see how much their batteries drop in text mode.. 
vs X.. in a fixed amount of time. I think this would decide whether such a 
patch would be benefitial.