From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752231AbWJ0Qli (ORCPT ); Fri, 27 Oct 2006 12:41:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752304AbWJ0Qlh (ORCPT ); Fri, 27 Oct 2006 12:41:37 -0400 Received: from 8.ctyme.com ([69.50.231.8]:9147 "EHLO darwin.ctyme.com") by vger.kernel.org with ESMTP id S1752231AbWJ0Qlh (ORCPT ); Fri, 27 Oct 2006 12:41:37 -0400 Message-ID: <454236C0.2070805@perkel.com> Date: Fri, 27 Oct 2006 09:41:36 -0700 From: Marc Perkel User-Agent: Thunderbird 1.5.0.7 (Windows/20060909) MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: Re: Hardware Problem - Asus A8N-VM CSM References: <1449F58C868D8D4E9C72945771150BDF153767@SAUSEXMB1.amd.com> In-Reply-To: <1449F58C868D8D4E9C72945771150BDF153767@SAUSEXMB1.amd.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spamfilter-host: darwin.ctyme.com - http://www.junkemailfilter.com Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Langsdorf, Mark wrote: >>> The problem. 2 out of the 4 sees all 4 gigs of ram. The other 2 see >>> only 2.8 gigs of ram. And it's hardware related because in the bios >>> setup the ones that show 2.8 show it in the bios. >>> >>> The motherboards were not prchased at the same time. All have >>> different brands of ram. And the processors are different. >>> The 2 that don't see all the ram are the newest ones. >>> >>> I tried swapping ram between one that saw 2.8 gigs and one >>> that saw 4 gigs and the problem stays with the motherboard. >>> I haven't yet swapped out the processors. >>> >>> So - I'm a little stumped. Can someone point me in the >>> right direction? >>> > > Usually, missing memory comes from the PCI I/O hole, or the > IOMMU/AGP/framebuffer overlays. Does your BIOS have an > options for creating a memory hole or hoisting memory? If > so, are the settings between the 4G machines different from > the 2.8G machines? > > Also, do you have an IOMMU aperture enabled and if so, how > large? > > Are there any hardware differences between the systems, like > different AGP or PCI graphics cards? > > >> Answering my own question perhaps. Could it be related to >> whether or not the processor is a "revision e" chip? >> > > Possibly, but I'd expect the RevE parts to see more DRAM than > the earlier parts. > > > I fixed the problem. It wasn't a Revision E issue after all. I just pulled the battery and when it came up clean it saw all the memory. Thanks for your help.