From owner-freebsd-stable  Fri Aug  2  8:35:44 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 6248037B400; Fri,  2 Aug 2002 08:35:41 -0700 (PDT)
Received: from freebsd.dk (cpe.atm2-0-56339.0x50c6aa0a.abnxx2.customer.tele.dk [80.198.170.10])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 0F4D643E70; Fri,  2 Aug 2002 08:35:40 -0700 (PDT)
	(envelope-from sos@freebsd.dk)
Received: (from sos@localhost)
	by freebsd.dk (8.12.5/8.12.5) id g72FZcKC041719;
	Fri, 2 Aug 2002 17:35:38 +0200 (CEST)
	(envelope-from sos)
From: Soeren Schmidt <sos@freebsd.dk>
Message-Id: <200208021535.g72FZcKC041719@freebsd.dk>
Subject: Re: After upgrade: panic with ad0 device
In-Reply-To: <20020802171854.I58571-100000@levais.imp.ch>
To: Martin Blapp <mb@imp.ch>
Date: Fri, 2 Aug 2002 17:35:37 +0200 (CEST)
Cc: sos@freebsd.org, stable@freebsd.org
X-Mailer: ELM [version 2.4ME+ PL98b (25)]
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset=ISO-8859-1
Sender: owner-freebsd-stable@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-stable.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-stable>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-stable>
X-Loop: FreeBSD.ORG

It seems Martin Blapp wrote:
> We get repeatable panics on a old machine, where a ATA
> disk seems to have problems.
> 
> It works fine on 4.4 (beside some timeout messages),
> panics reproducable at startup every time at the same
> place.
> 
> With 4.4 we got:
> 
> ad0: READ command timeout tag=0 serv=0 - resetting
> ata0: resetting devices .. done
> ad0: READ command timeout tag=0 serv=0 - resetting
> ata0: resetting devices .. done
> ad0: READ command timeout tag=0 serv=0 - resetting
> ata0: resetting devices .. done
> ad0: READ command timeout tag=0 serv=0 - resetting
> ad0: trying fallback to PIO mode
> ata0: resetting devices .. done
> 
> Everything worked. Now, after a upgrade to 4.6 STABLE
> we get a panic after "ad0: trying fallback to PIO mode".

dmesg ? !?!

> Set the device in BIOS to PIO mode doesn't help too.

That changes nothing at all..

Maybe you could disable DMA from the loader, does it work then ?

-Søren

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-stable" in the body of the message