From owner-freebsd-amd64@FreeBSD.ORG Wed Mar 30 22:35:46 2005 Return-Path: Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D053216A4CE; Wed, 30 Mar 2005 22:35:46 +0000 (GMT) Received: from troutmask.apl.washington.edu (troutmask.apl.washington.edu [128.208.78.105]) by mx1.FreeBSD.org (Postfix) with ESMTP id A6D6743D46; Wed, 30 Mar 2005 22:35:46 +0000 (GMT) (envelope-from sgk@troutmask.apl.washington.edu) Received: from troutmask.apl.washington.edu (localhost [127.0.0.1]) j2UMZkqi004792; Wed, 30 Mar 2005 14:35:46 -0800 (PST) (envelope-from sgk@troutmask.apl.washington.edu) Received: (from sgk@localhost)j2UMZkXk004791; Wed, 30 Mar 2005 14:35:46 -0800 (PST) (envelope-from sgk) Date: Wed, 30 Mar 2005 14:35:46 -0800 From: Steve Kargl To: "Greg 'groggy' Lehey" Message-ID: <20050330223546.GA4705@troutmask.apl.washington.edu> References: <20050330222439.GU84137@wantadilla.lemis.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050330222439.GU84137@wantadilla.lemis.com> User-Agent: Mutt/1.4.2.1i cc: FreeBSD Stable Users cc: FreeBSD-amd64@freebsd.org Subject: Re: Problems with AMD64 and 8 GB RAM? X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Mar 2005 22:35:47 -0000 On Thu, Mar 31, 2005 at 07:54:39AM +0930, Greg 'groggy' Lehey wrote: > None of these problems occur when I use 4 GB memory. About the only > strangeness, which seems to come from the BIOS, is that it recognizes > only 3.5 GB. If I put all DIMMS in, it recognizes the full 8 GB > memory. > > I realize that this isn't enough to diagnose the problem. The reason > for this message now is to ask: > > 1. Has anybody else seen this problem? > 2. Has anybody else used this hardware configuration and *not* seen > this problem? > 3. Where should I look next? > Have you run sysutils/memtest86 with the 8 GB? I had 4 bad out of 12 tested where the DIMMs were Crucial PC2700 2GB Reg. ECC DIMMs. -- Steve