From: Alexey Starikovskiy <aystarik@gmail.com>
To: Nicolas <nikos42@gmail.com>
Cc: linux-pm@lists.linux-foundation.org
Subject: Re: Wrong remaining capacity of my battery when it is charged
Date: Sun, 29 Jul 2007 12:49:22 +0400 [thread overview]
Message-ID: <46AC5492.3060306@gmail.com> (raw)
In-Reply-To: <46AC4A40.1070300@gmail.com>
Nicolas wrote:
> Hello,
> I have a problem with the remaining capacity indicator of my battery.
> Here is what I read in /proc/acpi/battery/BAT0/info:
> design capacity: 79920 mWh
> last full capacity: 75000 mWh
> I run Linux 2.6.15.
> But when the battery is charged, remaining capacity as indicated in
> /proc/acpi/battery/BAT0/state is 79920 mWh. When the battery is
> charging, remaining capacity slowly rises to 75000 mWh, then jumps to
> 79920 mWh.
> I could not figure out if remaining capacity is computed by the battery
> itself, which would mean that there is a little bug in my battery
> firmware, or by ACPI, using other informations.
> Thanks in advance for explanations!
> Nicolas
ACPI does not compute anything. Information is supplied by BIOS methods (_BST in DSDT).
_BST could compute something, but it usually just reads registers of embedded controller (battery).
Regards,
Alex.
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> linux-pm mailing list
> linux-pm@lists.linux-foundation.org
> https://lists.linux-foundation.org/mailman/listinfo/linux-pm
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prev parent reply other threads:[~2007-07-29 8:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-29 8:05 Wrong remaining capacity of my battery when it is charged Nicolas
2007-07-29 8:49 ` Alexey Starikovskiy [this message]
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