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[Bug 110784] Re: Toshiba laptop battery is drained while shut down

To: registry@xxxxxxxxxxxxxxxxxxx
From: "Sheldon T. Hall" <shel@xxxxxxxxxx>
Date: Fri, 28 May 2010 16:17:18 -0000
Reply-to: Bug 110784 <110784@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

I have had this problem on my Toshiba Portege R-100 with both Ubuntu
9.04 and Puppy Linux 4.3.1, but not under Windows XP.  The machine is
currently running Puppy Linux 4.3.1 (a derivative of the Debian/Ubuntu
core).

Based on some comments above, I did a little testing and I found that
the machine's Ethernet port was powered up even when the machine had
been shut down by the Linux shutdown procedure.  The R-100 uses an Intel
Ethernet card, and Linux uses the "e100" LKM for this card.

Unloading the e100 module (with modprobe -r) before shutting down
reduces the battery drain from 2% per hour to 0.2% per hour when the
machine is off.

-Shel

-- 
Toshiba laptop battery is drained while shut down
https://bugs.launchpad.net/bugs/110784
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