linux-kernel - Re: [Bug 10797] Something is consuming power after shutdown

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Date:	Mon, 26 May 2008 13:30:18 -0300
From:	"Renato S. Yamane" <yamane@...mondcut.com.br>
To:	Arjan van de Ven <arjan@...radead.org>
CC:	linux-kernel@...r.kernel.org, 481493@...s.debian.org
Subject: Re: [Bug 10797] Something is consuming power after shutdown

Arjan van de Ven wrote:
> "Renato S. Yamane" wrote:
>> <http://bugzilla.kernel.org/show_bug.cgi?id=10797>
>> <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=481493>
>>
>> After poweroff, something still working and consuming power. So I
>> loss ~4% of my battery charge in each 12h.
> 
> the most obvious cause could be Wake-on-Lan, that leaves a part of the
> system active (specifically, the network card). With the "ethtool"
> program you can queary and set the state of this.

My network card have option WOL "disabled"

# ethtool eth0 | grep Wake
         Supports Wake-on: pg
         Wake-on: d

> Similarly, but less likely, there is wake-on-serial and wake-on-usb, in
> theory those are possible too but I've yet to see one of those on any
> of my machines.

My laptop don't have serial port and wake-on-usb is disabled too:

# cat /proc/acpi/wakeup
Device  S-state   Status   Sysfs node
LID0      S4    *enabled
RP01      S4     disabled  pci:0000:00:1c.0
RP02      S4     disabled  pci:0000:00:1c.1
RP03      S4     disabled
RP04      S4     disabled
USB1      S0     disabled  pci:0000:00:1d.0
USB2      S0     disabled  pci:0000:00:1d.1
USB3      S0     disabled  pci:0000:00:1d.2
USB4      S0     disabled  pci:0000:00:1d.3
USB7      S0     disabled  pci:0000:00:1d.7
MODM      S4     disabled  pci:0000:00:1e.3
PS2K      S4     disabled  pnp:00:07

Best regards,
Renato S. Yamane
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