From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: RE: K7 CPU disconnect & system lock Date: Mon, 19 Jan 2004 22:43:42 +0100 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20040119214342.GC380@elf.ucw.cz> References: <21180.1074446641@www44.gmx.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <21180.1074446641-oa/r6l4+J3Zmcu3hnIyYJQ@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Thomas Herrmann Cc: "Brown, Len" , acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org Hi! > the K7 cpu disconnect feature is a power save mode, where the CPU > disconnects from the north bridge and goes into sleep mode. Any interrupt will wake-up > the CPU which then needs to connect to the north bridge again to transfer > data. While CPU disconnect enabled the idle temperature of the CPU drops from > around 52C to 27C on my systems. On certain systems this feature can be enabled > via BIOS, but there is also a tool called "athcool" which sets the > configuration register. > > I have attached the requested logs. As you will see while acpi=off certain > devices (like USB) are not available due to no IRQ routing. All devices work > fine with acpi enabled. I believe that was traced to hw problem, see kernel list for nforce2 info. Pavel -- When do you have a heart between your knees? [Johanka's followup: and *two* hearts?] ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn