From owner-freebsd-stable Tue Sep 17 21:35:11 2002 Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A63F337B401 for ; Tue, 17 Sep 2002 21:35:09 -0700 (PDT) Received: from csmail.cscoms.com (mail.cscoms.net [202.183.255.13]) by mx1.FreeBSD.org (Postfix) with ESMTP id E3F5A43E75 for ; Tue, 17 Sep 2002 21:35:07 -0700 (PDT) (envelope-from alain@cscoms.net) Received: from cscoms.net (alain [202.183.160.250]) by csmail.cscoms.com (8.12.3/8.12.3) with ESMTP id g8I4YcQ6000969; Wed, 18 Sep 2002 11:34:39 +0700 (ICT) Received: (from alain@localhost) by cscoms.net (8.11.4/8.9.3) id g8I4Yac02620; Wed, 18 Sep 2002 11:34:36 +0700 Date: Wed, 18 Sep 2002 11:34:36 +0700 From: Alain Fauconnet To: Frank Mayhar , dschultz@uclink.Berkeley.EDU Cc: freebsd-stable@freebsd.org Subject: Re: Numerous hard hangs on TWO different ASUS P4T-E w/P4 1.6G Message-ID: <20020918113436.B2542@cscoms.net> References: <20020607143308.A1030@HAL9000.wox.org> <200206072344.g57NiTwD033645@realtime.exit.com> <20020610104015.D9887@cscoms.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20020610104015.D9887@cscoms.net>; from alain@cscoms.net on Mon, Jun 10, 2002 at 10:40:15AM +0700 X-Virus-Scanned: by amavisd-milter (http://amavis.org/) Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hello, Well, these boxes have all been upgraded to 4.6.2 and they still freeze from time to time unless I disable DMA. If I put: hw.ata.ata_dma="0" in /boot/loader.conf they become totally stable. I've found a 3rd box in the company, same motherboard, exhibiting the same problem. Has anyone found anything new about this ? Greets, _Alain_ On Mon, Jun 10, 2002 at 10:40:15AM +0700, Alain Fauconnet wrote: > Thanks to all who replied. > > I will consider doing a CVS upgrade (first I need to learn how > to do it). I dislike the idea of a downgrade to 4.4 or whatever older > than 4.5. > > For what it's worth, the box has *not* hung again since I have > switched off DMA (forced PIO using sysctl). It's clearly not an option > for long-term production mode though, and it has already happened that > it had been stable for weeks, so that doesn't really tell much. > > Since the box freezes up solid and I can't enter DDB, I really wonder > what I could do to help tracking down the problem. Suggestions are > welcome. > > Greets, > _Alain_ > > > On Fri, Jun 07, 2002 at 04:44:29PM -0700, Frank Mayhar wrote: > > David Schultz wrote: > > > Don't rule out hardware problems until you've tried a different model > > > motherboard. Some old ASUS boards have a problem where, under intense > > > memory load, the voltage drops below the signalling threshhold and the > > > box locks up as you've described. (ASUS won't readily admit to this > > > or any of the other bugs in their boards, but ask them why they did > > > the third revision to the P2B-F.) That's just an example, but the > > > point is that both of your P4T-Es could have the same bug. > > > > Well, considering that many different people are seeing this on different > > hardware (I have in fact seen it on two different motherboards, a Tyan > > Thunder 2500 with dual PIIIs and my current 2466N-4M with dual AMD MPs, > > different SCSI controllers, too), I think it must be some new bug in > > FreeBSD. Perhaps in the interrupt handling? I don't really know where > > to begin to look; if someone could suggest some places, that would be > > very useful. > > > > So far, none of the various suggestions have made any difference at all. > > I have yet to turn off my IDE and parallel port to get IRQs back, I'll > > do that this weekend. > > -- > > Frank Mayhar frank@exit.com http://www.exit.com/ > > Exit Consulting http://www.gpsclock.com/ > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message