Date: Thu, 31 Mar 2005 08:14:45 +0930 From: Greg 'groggy' Lehey <grog@FreeBSD.org> To: Steve Kargl <sgk@troutmask.apl.washington.edu> Cc: FreeBSD-amd64@freebsd.org Subject: Re: Problems with AMD64 and 8 GB RAM? Message-ID: <20050330224445.GW84137@wantadilla.lemis.com> In-Reply-To: <20050330223546.GA4705@troutmask.apl.washington.edu> References: <20050330222439.GU84137@wantadilla.lemis.com> <20050330223546.GA4705@troutmask.apl.washington.edu>
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--BkCcXYe/IK2urb/q Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wednesday, 30 March 2005 at 14:35:46 -0800, Steve Kargl wrote: > 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? Heh. Difficult when the system doesn't run. > I had 4 bad out of 12 tested where the DIMMs were Crucial PC2700 2GB > Reg. ECC DIMMs. OK, this makes sense. It might also explain why the 4 GB configuration only recognizes 3.5 GB. Greg -- See complete headers for address and phone numbers. --BkCcXYe/IK2urb/q Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQFCSyvdIubykFB6QiMRAqEMAJ4rCxVHAHy62OIXn5Q2ENeOKXozVACgrWqZ UT4k8Ij7ChT8g0yUZ6UmBjQ= =zVJ2 -----END PGP SIGNATURE----- --BkCcXYe/IK2urb/q--
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