From owner-freebsd-current@FreeBSD.ORG Thu Dec 28 00:55:20 2006 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 1B73D16A40F for ; Thu, 28 Dec 2006 00:55:20 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from pi.codefab.com (pi.codefab.com [199.103.21.227]) by mx1.freebsd.org (Postfix) with ESMTP id DF02913C463 for ; Thu, 28 Dec 2006 00:55:19 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from localhost (localhost [127.0.0.1]) by pi.codefab.com (Postfix) with ESMTP id 521885D9B; Wed, 27 Dec 2006 19:55:19 -0500 (EST) X-Virus-Scanned: amavisd-new at codefab.com Received: from pi.codefab.com ([127.0.0.1]) by localhost (pi.codefab.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id H8BVDdI4tQBT; Wed, 27 Dec 2006 19:55:17 -0500 (EST) Received: from [192.168.1.251] (pool-68-161-114-230.ny325.east.verizon.net [68.161.114.230]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by pi.codefab.com (Postfix) with ESMTP id AE6245D92; Wed, 27 Dec 2006 19:55:16 -0500 (EST) Message-ID: <459315F0.3060809@mac.com> Date: Wed, 27 Dec 2006 19:55:12 -0500 From: Chuck Swiger User-Agent: Thunderbird 1.5.0.9 (Windows/20061207) MIME-Version: 1.0 To: Doug Barton References: <459310D6.3070107@FreeBSD.org> In-Reply-To: <459310D6.3070107@FreeBSD.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-current@freebsd.org, sos@freebsd.org Subject: Re: Lots of READ_BIG errors on my new cd drive X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 28 Dec 2006 00:55:20 -0000 Doug Barton wrote: [ ... ] > I get a lot of errors that look like this: > > acd0: FAILURE - READ_BIG HARDWARE ERROR asc=0x3e ascq=0x02 > > On CDs and DVDs that I've recorded on other drives, that I've recorded > on this drive, and commercial ones. > > Any ideas on where to start looking? Does toggling: hw.ata.ata_dma="0" ...in loader.conf make a difference? I'd imagine you'd like DMA to work but knowing whether the problem goes anyway with DMA off is useful to test. For that matter, does a careful application of compressed air to remove any dust or lint inside the drive help? Also, is this problem specific to -CURRENT or reproducible elsewhere? -- -Chuck