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Date:      Thu, 20 May 1999 12:55:58 -0700
From:      Michael Haro <mharo@area51.fremont.ca.us>
To:        Warner Losh <imp@harmony.village.org>
Cc:        mobile@FreeBSD.ORG
Subject:   Re: apm reports wrong remaining battery life
Message-ID:  <19990520125558.A42102@area51.fremont.ca.us>
In-Reply-To: <199905190027.SAA79997@harmony.village.org>; from Warner Losh on Tue, May 18, 1999 at 06:27:48PM -0600
References:  <19990518162300.A26935@area51.fremont.ca.us> <199905190027.SAA79997@harmony.village.org>

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On Tue, May 18, 1999 at 06:27:48PM -0600, Warner Losh wrote:
> In message <19990518162300.A26935@area51.fremont.ca.us> Michael Haro writes:
> : Hi, I noticed that on my Sony VAIO 505tx apm reports 3 hours
> : of total life with both the standard and long batteries.   Is
> : there a way to fix this or is this just a bug in the way the VAIO
> : or APM work?
> 
> It is a "bug" in the VAIO's bios.  It always says that the low cap
> battery lasts three hours.  It doesn't bother to do drain based
> battery life calculations in the numbers it returns from the BIOS.  To
> get better numbers (like the ones that are on the power panel
> application), FreeBSD would have to support ACPI.

Any idea how hard ACPI would be to implement?  Where can I find
out more about ACPI?

Michael


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