From owner-freebsd-questions Fri Jan 28 7:31: 0 2000 Delivered-To: freebsd-questions@freebsd.org Received: from ptavv.es.net (ptavv.es.net [198.128.4.29]) by hub.freebsd.org (Postfix) with ESMTP id 0E3C815BFF for ; Fri, 28 Jan 2000 07:30:58 -0800 (PST) (envelope-from oberman@ptavv.es.net) Received: from ptavv.es.net (localhost [127.0.0.1]) by ptavv.es.net (8.8.8/8.8.8) with ESMTP id HAA01991; Fri, 28 Jan 2000 07:30:54 -0800 (PST) Message-Id: <200001281530.HAA01991@ptavv.es.net> To: R Joseph Wright Cc: questions@freebsd.org Subject: Re: Why Doesn't XFree86 Upgrade Properly In-reply-to: Your message of "Thu, 27 Jan 2000 22:04:12 PST." <3891315C.9BD4FB66@nwlink.com> Date: Fri, 28 Jan 2000 07:30:53 -0800 From: "Kevin Oberman" Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG As I mentioned in my last message, my problem with bad RAM was on my brand new system. Memory (and, to a lesser extent, other solid-state components) will typically fail in the first 90 days or after several years. This is probably more true of memory than most chips because of the very dense nature of the chips. (I don't think I want to get into an explanation of atomic migration and the like. I really don't fully understand it myself and I'd just be parroting a friend who is a solid-state physicist.) In any case, memory that lasts for 6 months is probably good for years. This is why many Mil-specs and NASA specs require extended burn-in periods for all solid-state components. If you have two DIMMs, pull one. FreeBSD can get by with 16 or 32 MB with no problems (although some operation may slow down). If it still crashes, put that one back and pull the other. !!!Follow proper anti-static procedures!!! R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message