From owner-freebsd-stable@FreeBSD.ORG  Wed Aug 15 09:43:23 2012
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Date: Wed, 15 Aug 2012 11:43:22 +0200
From: Dominic Fandrey <kamikaze@bsdforen.de>
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To: Andreas Nilsson <andrnils@gmail.com>
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Cc: freebsd-stable@freebsd.org
Subject: Re: battery state
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On 15/08/2012 11:07, Andreas Nilsson wrote:
> On Wed, Aug 15, 2012 at 10:45 AM, Dominic Fandrey <kamikaze@bsdforen.de>wrote:
>
>> On 15/08/2012 10:40, Andreas Nilsson wrote:
>>
>>> On Wed, Aug 15, 2012 at 10:36 AM, Dominic Fandrey <kamikaze@bsdforen.de
>>>> wrote:
>>>
>>>> For a while now "acpiconf -i0" always shows the battery state that
>>>> was correct when booting the system. It's never updated.
>>>>
>>>> snip
>>>>
>>>
>>> It wont solve the problem, but does the sysctl hw.acpi.battery.time update
>>> correctly?
>>>
>>
>> Thanks for the fast reply, right now it shows -1 (the system was plugged
>> in during boot).
>>
>> I just unplugged it and it still shows -1:
>>
>>> sysctl hw.acpi.battery
>>>
>> hw.acpi.battery.life: 99
>> hw.acpi.battery.time: -1
>> hw.acpi.battery.state: 0
>> hw.acpi.battery.units: 2
>> hw.acpi.battery.info_expire: 5
>>
>
> Sounds like there is some acpi-problem then. On my thinkpad it takes maybe
> five seconds for it to go from -1 to an estimate.

You can tune this with hw.acpi.battery.info_expire. But 5 seconds sounds
like an OKish value to me.

> Also
> hw.acpi.battery.state=0 for me equals "AC plugged in and battery full".

That was the correct state while the system was booting.

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