From: Pavel Machek <pavel@ucw.cz>
To: Alexander Gran <alex@grans.eu>
Cc: kernel list <linux-kernel@vger.kernel.org>,
Greg KH <greg@kroah.com>,
Linux usb mailing list <linux-usb-devel@lists.sourceforge.net>
Subject: Re: usb still sucks battery in -rc7-mm1
Date: Sun, 24 Sep 2006 16:21:58 +0000 [thread overview]
Message-ID: <20060924162158.GB5156@ucw.cz> (raw)
In-Reply-To: <200609241650.02922@zodiac.zodiac.dnsalias.org>
On Sun 24-09-06 16:49:59, Alexander Gran wrote:
> Perhaps your cpu cannot go into deep c states? At least my IBm T40p has that
> problem, when USB is enabled.
Yes, and latest -mm's were expected to fix that...
Pavel
>
> regards
> Alex
>
> Am Sonntag, 24. September 2006 11:08 schrieb Pavel Machek:
> > Hi!
> >
> > I made some quick experiments, and usb still eats 4W of battery
> > power. (With whole machine eating 9W, that's kind of a big deal)...
> >
> > This particular machine has usb bluetooth, but it can be disabled by
> > firmware, and appears unplugged. (I did that). It also has fingerprint
> > scanner, that can't be disabled, but that does not have driver (only
> > driven by useland, and was unused in this experiment).
> >
> > Any ideas?
> > Pavel
>
> --
> Encrypted Mails welcome.
> PGP-Key at http://www.grans.eu/misc/pgpkey.asc | Key-ID: 0x6D7DD291
> More info at http://www.grans.eu/Alexander_Gran.html
--
Thanks for all the (sleeping) penguins.
next prev parent reply other threads:[~2006-09-25 14:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-24 9:08 Pavel Machek
2006-09-24 12:18 ` [linux-usb-devel] " Theodoros V. Kalamatianos
2006-09-24 20:20 ` Pavel Machek
2006-09-27 22:46 ` David Brownell
2006-09-24 14:49 ` Alexander Gran
2006-09-24 16:21 ` Pavel Machek [this message]
2006-09-24 20:54 ` [linux-usb-devel] " Alan Stern
2006-09-24 21:05 ` Pavel Machek
2006-09-24 21:13 ` Alan Stern
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