From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
To: Sascha Heid <saschaheid@gmail.com>
Cc: linux-acpi@vger.kernel.org
Subject: Re: CoreDuo Bus-Master-Activity on Core1 ffffffff when idle, no C3
Date: Fri, 9 Feb 2007 17:17:43 -0200 [thread overview]
Message-ID: <20070209191743.GD4536@khazad-dum.debian.net> (raw)
In-Reply-To: <1171046151.11522.1.camel@localhost>
On Fri, 09 Feb 2007, Sascha Heid wrote:
> Am Freitag, den 09.02.2007, 12:29 -0200 schrieb Henrique de Moraes
> Holschuh:
> > On Fri, 09 Feb 2007, Len Brown wrote:
> > > Try disconnecting usb devices until lsusb shows nothing.
> >
> > On some ThinkPads, this means removing uhci_hcd and ehci_hcd, because they
> > have internal USB devices (bluetooth, fingerprint reader, etc).
>
> Thats it, added 1h Battery-Life immediately.
Now, for the golden question: Should uhci_hcd be causing that much
bus-mastering activity? And why it causes that *only* when the CPU is idle?
That is extremely weird.
I think there indeed is a real bug at work here.
--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh
prev parent reply other threads:[~2007-02-09 19:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-09 2:47 CoreDuo Bus-Master-Activity on Core1 ffffffff when idle, no C3 Sascha Heid
2007-02-09 6:54 ` Len Brown
2007-02-09 14:29 ` Henrique de Moraes Holschuh
2007-02-09 18:35 ` Sascha Heid
2007-02-09 19:17 ` Henrique de Moraes Holschuh [this message]
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