From owner-freebsd-questions@FreeBSD.ORG Sun Jun 5 20:31:35 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BC9B2106564A for ; Sun, 5 Jun 2011 20:31:35 +0000 (UTC) (envelope-from kayasaman@gmail.com) Received: from mail-wy0-f182.google.com (mail-wy0-f182.google.com [74.125.82.182]) by mx1.freebsd.org (Postfix) with ESMTP id 41A8E8FC14 for ; Sun, 5 Jun 2011 20:31:34 +0000 (UTC) Received: by wyf23 with SMTP id 23so3310925wyf.13 for ; Sun, 05 Jun 2011 13:31:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:message-id:date:from:user-agent:mime-version:to :cc:subject:references:in-reply-to:content-type :content-transfer-encoding; bh=bnurPkJJcUP1fzwrfzSYaxSN1ubDFuHIFjm10m6mFH8=; b=VMYS209EQFOspq5quTPysdA74ujJT1f5Nckbz+4wgLTTOIXz5TXYnwCeQj633hH+Of xztO1VrSZJM6ZzpLfAmyglDNAvOoUiv92KbFl6CQChomxMTTPikcWUeW4VO6V5Vu9QRC mfvYUT/JG9nGXdqvNBC3C/vvxyJIsiFZ0NT/A= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=YgYZJ5xR+VVeIulpik2PGV/BvO+9SrcQAFzUZv/JLNtMVujcFWLUMxd2tfvsm1BLP3 +bhcYJpR2J3jk61/vwmIa5ArSP+KtYvI4Gw633IKLpjglmRF2jFPEFdOIRPY7CHX0ewa Qdq/fc57Z+M46QF3gRO9G0Azw0mIiCE7ObHAc= Received: by 10.227.24.146 with SMTP id v18mr4151669wbb.84.1307305893879; Sun, 05 Jun 2011 13:31:33 -0700 (PDT) Received: from [10.16.0.3] ([78.186.130.149]) by mx.google.com with ESMTPS id gb6sm2425041wbb.0.2011.06.05.13.31.32 (version=SSLv3 cipher=OTHER); Sun, 05 Jun 2011 13:31:32 -0700 (PDT) Message-ID: <4DEBE7A1.4070508@gmail.com> Date: Sun, 05 Jun 2011 23:31:29 +0300 From: Kaya Saman User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.1.8) Gecko/20100227 Lightning/1.0b1 Thunderbird/3.0.3 MIME-Version: 1.0 To: perryh@pluto.rain.com References: <4DE8CF13.1040304@gmail.com> <4de9679b.AE3DPW9jNqVtiL2D%perryh@pluto.rain.com> <4DE9E44E.3080707@gmail.com> <4dead25e.dVwQb8YCMs0X59f/%perryh@pluto.rain.com> In-Reply-To: <4dead25e.dVwQb8YCMs0X59f/%perryh@pluto.rain.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-questions@freebsd.org Subject: Re: Strange system lockups - kernel saying disk error X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 05 Jun 2011 20:31:35 -0000 On 06/05/2011 03:48 AM, perryh@pluto.rain.com wrote: > Kaya Saman wrote: > > >>> Did you apply any updates shortly before it started to fail? >>> >> No updates! I did however, install unrar through ports. >> > Intuitively, that seems unlikely to have triggered the problem. > This doesn't sound like an issue to me either as it wouldn't touch the kernel or any modules. > >> I remember on other boards that went on me in the past with >> capacitor issues, a bunch of orange stuff starts leaking out >> of them when they blow up. >> > A leaking capacitor has surely gone bad, but the syndrome I'm > thinking of is more subtle. The top of the can, which should > be flat, bulges upward a little bit. > > Whether replacing bad capacitors qualifies as "quick" depends > on how comfortable you are using a soldering iron. It does > generally require taking the board out of the case, which may > or may not be "quick" or "easy" depending on the case design. > I have a degree in Electronic Engineering :-) - though no soldering iron :-( > >> Also the chassis doesn't have any cooling fans either since it was >> bought extremely cheaply by the family member but not sure that's >> the culprit neither power problems as the system has run in high >> outside ambient temps in the past with no A/C in the room and also >> was working fine on the PSU installed with the 4 disks. >> > Fans that were never there can't have suddenly failed :) > Odd that isn't it :-P > Power supplies do fail occasionally, and not always in obvious > ways such as failing to turn on at all. The output voltages may > be a little too high or too low, or they may be correct but with > excessive ripple or electrical noise; or the supply may be just > fine until a disk draws a current spike to move the arm rapidly. > This needs either a voltmeter or oscilloscope to check out the voltages, fluctuations, and ripple. None of those at home :-( .... > It might be worth checking the fan mounted on the CPU heatsink if > there is one, and the fan in the power supply (which ventilates the > case as well as the power supply itself). > CPU fan works - at least it spins, fan in PSU not checked as I'd need to open it as it's a PS/2 design if not mistaken! But all these tips would be useful for a system that was given more value then mine. If I had actually paid for the system and it been quite advanced it would definitely be worth taking everything into account. Regards, Kaya