From: Pavel Machek <pavel-+ZI9xUNit7I@public.gmane.org>
To: Marco Calviani <marco.calviani-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: Information regarding C3 cpu state and bus mastering activity
Date: Tue, 13 Dec 2005 15:06:24 +0100 [thread overview]
Message-ID: <20051213140624.GA13694@elf.ucw.cz> (raw)
In-Reply-To: <da5cd1900512111210k626ff691x-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Ne 11-12-05 21:10:53, Marco Calviani wrote:
> Hi acpi-devel list,
> I have a problem regarding C3 states and usb. When i'm plugging in any
> usb devices, the my busmaster activity starts couting preventing the
> cpu to go to C3 state. Obviously if i unload all usb-related modules,
> C3 state goes in, my battery lives longer and the laptop stays quiter;
> unfortunately i need an usb-mouse (and possibly also an external USB drive.
> I've read somewhere that this is a specific ACPI standard behaviuor
> but i'm asking if this can be modified in some way, i.d. is it
> possible, with some workarounds, to enter C3 state also with the usb
> modules?
Fix USB to send mouse into runtime-sleep state. That will allow C3 to
be used as long as you are not actively moving the mouse.
Pavel
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next prev parent reply other threads:[~2005-12-13 14:06 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-11 20:10 Information regarding C3 cpu state and bus mastering activity Marco Calviani
[not found] ` <da5cd1900512111210k626ff691x-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2005-12-12 0:33 ` Janosch Machowinski
[not found] ` <439CC549.5060500-cGBD8117FJM@public.gmane.org>
2005-12-12 3:42 ` Phillip Susi
[not found] ` <439CF197.3090902-3tLf1voIkJTQT0dZR+AlfA@public.gmane.org>
2005-12-12 12:47 ` Janosch Machowinski
[not found] ` <439D716B.3010705-cGBD8117FJM@public.gmane.org>
2005-12-12 16:08 ` Phillip Susi
2005-12-12 9:22 ` Marco Calviani
[not found] ` <da5cd1900512120122y217541a2h-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2005-12-12 12:51 ` Janosch Machowinski
[not found] ` <439D726E.4020704-cGBD8117FJM@public.gmane.org>
2005-12-12 16:02 ` Marco Calviani
2005-12-12 16:10 ` Marco Calviani
[not found] ` <da5cd1900512120810v75dd8721t-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2005-12-13 2:08 ` phutchis-CWA4WttNNZF54TAoqtyWWQ
[not found] ` <200512130208.jBD280VU003725-2ArO/UEyFsZWk0Htik3J/w@public.gmane.org>
2005-12-13 20:52 ` Marco Calviani
2005-12-13 14:06 ` Pavel Machek [this message]
[not found] ` <20051213140624.GA13694-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2005-12-14 11:58 ` Erik Slagter
2005-12-14 21:29 ` Marco Calviani
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