linux-kernel - Re: Bug on Latitude E6410 battery

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Message-ID: <20110222115103.GB16596@legolas.emea.dhcp.ti.com>
Date:	Tue, 22 Feb 2011 13:51:03 +0200
From:	Felipe Balbi <balbi@...com>
To:	Felipe Balbi <balbi@...com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Anton Vorontsov <cbou@...l.ru>,
	David Woodhouse <dwmw2@...radead.org>
Subject: Re: Bug on Latitude E6410 battery

Hi again,

On Tue, Feb 22, 2011 at 01:47:10PM +0200, Felipe Balbi wrote:
> there's some sort of weird bug on Latitude's battery as it shows 5600
> hours of battery time when it's discharging (gnome-power_manager says
> that), here are all files' contents from /sys/class/power_supply/BAT0/:
> 
> alarm:			0
> charge_full:		5276000
> charge_full_design:	5600000
> charge_now:		5230000
> current_now:		1606000
> cycle_count:		0
> manufacturer:		Samsung SDI
> model_name:		DELL H139107
> present:		1
> serial_number:		1422
> status:			Discharging
> technology:		Li-ion
> type:			Battery
> uevent:			POWER_SUPPLY_NAME=BAT0
> 			POWER_SUPPLY_STATUS=Discharging
> 			POWER_SUPPLY_PRESENT=1
> 			POWER_SUPPLY_TECHNOLOGY=Li-ion
> 			POWER_SUPPLY_CYCLE_COUNT=0
> 			POWER_SUPPLY_VOLTAGE_MIN_DESIGN=11100000
> 			POWER_SUPPLY_VOLTAGE_NOW=12683000
> 			POWER_SUPPLY_CURRENT_NOW=1606000
> 			POWER_SUPPLY_CHARGE_FULL_DESIGN=5600000
> 			POWER_SUPPLY_CHARGE_FULL=5276000
> 			POWER_SUPPLY_CHARGE_NOW=5230000
> 			POWER_SUPPLY_MODEL_NAME=DELL H139107
> 			POWER_SUPPLY_MANUFACTURER=Samsung SDI
> 			POWER_SUPPLY_SERIAL_NUMBER=1422
> voltage_min_design:	11100000
> voltage_now:		12683000
> 
> BTW, I'm using 2.6.38-rc5

Now I just saw that it's maybe a race. Sometimes is shows correctly
(3 hours and something) and sometimes it shows wrong value (over 5000
hours).

It looks like the notification that I get when I remove the cable, shows
the wrong value and if after the notification vanishes, I put my mouse
pointer over the battery icon, then I get correctly value.

Maybe a bug on gnome-power-manager.

-- 
balbi
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