linux-kernel - Re: [Bug 10797] Battery is drained after poweroff

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Date:	Tue, 07 Oct 2008 12:12:41 -0700
From:	"Kok, Auke" <auke-jan.h.kok@...el.com>
To:	Pavel Machek <pavel@...e.cz>
CC:	"Renato S. Yamane" <yamane@...mondcut.com.br>,
	linux-kernel@...r.kernel.org, rjwysocki@...k.pl,
	power-management_other@...nel-bugs.osdl.org
Subject: Re: [Bug 10797] Battery is drained after poweroff

Pavel Machek wrote:
> On Tue 2008-10-07 13:06:10, Renato S. Yamane wrote:
>> Pavel Machek wrote:
>> Renato S. Yamane wrote:
>>>> Can someone help us with this bug?
>>>> <http://bugzilla.kernel.org/show_bug.cgi?id=10797>
>>>>
>>>> Same problem is reported in Ubuntu:
>>>> <https://bugs.launchpad.net/ubuntu/+source/linux/+bug/110784>
>>>>
>>>> This is not a hardware problem, because if the same laptop is poweroff
>>>> by Windows, battery charge don't change.
>>> ...and it is not linux problem because it works okay on my thinkpad. See? 
>> Yes, this is a Linux problem (at least in release >= 2.6.22)
>> This happening *only* in Linux (Kernel >=2.6.22).
> 
> Wow, now that's useful info.
> 
> I guess you _could_ do git bisect? ;-).
> 
>>>> And, if I suspend to ram/disk BEFORE poweroff, battery charge don't
>>>> change (suspend to ram/disk --> WakeUp --> Poweroff).
>>> Which machine is that? Can you find out which device eats power? (It
>>> should be warm).
>> This problem is happening in Toshiba Satellite M45-S355, Toshiba Equium
>> A100-306, HP DV8000, HP DV9500, Dell Latitude D630, Toshiba M110, Sony
>> Vaio VGN-S2XP, Toshiba Satellite A105-S4384, Toshiba Satellite M55-S3314
>> and Toshiba Satellite A105-S2201 as you can see in bug report listed above.
>>
>> And is impossible find wich device eats power (eaten current is too low,
>> and is not enought to make hot).
> 
> So how fast is it eating power... can you estimate Watts eaten?
> 									Pavel

perhaps wake-on-lan and friends are enabled? check the bios etc...

Auke
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