From owner-freebsd-questions@FreeBSD.ORG Fri Jun 16 17:02:37 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B580116A474 for ; Fri, 16 Jun 2006 17:02:37 +0000 (UTC) (envelope-from youshi10@u.washington.edu) Received: from mxout3.cac.washington.edu (mxout3.cac.washington.edu [140.142.32.166]) by mx1.FreeBSD.org (Postfix) with ESMTP id 461B543D46 for ; Fri, 16 Jun 2006 17:02:37 +0000 (GMT) (envelope-from youshi10@u.washington.edu) Received: from smtp.washington.edu (smtp.washington.edu [140.142.32.139]) by mxout3.cac.washington.edu (8.13.6+UW06.06/8.13.6+UW06.03) with ESMTP id k5GH2abp005778 for ; Fri, 16 Jun 2006 10:02:36 -0700 X-Auth-Received: from [128.208.4.96] (dzihan.cs.washington.edu [128.208.4.96]) (authenticated authid=youshi10) by smtp.washington.edu (8.13.6+UW06.06/8.13.6+UW06.03) with ESMTP id k5GH2atc002289 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Fri, 16 Jun 2006 10:02:36 -0700 Message-ID: <4492E42C.5090101@u.washington.edu> Date: Fri, 16 Jun 2006 10:02:36 -0700 From: Garrett Cooper User-Agent: Mozilla Thunderbird 1.0.8-1.1.1.1vy+fc4 (X11/20060419) X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-questions@freebsd.org References: <20060614123348.C50539@bas.flux.utah.edu> <4490E85C.9000507@webanoide.org> <20060615161636.Q50539@bas.flux.utah.edu> <20060616102239.U72162@bas.flux.utah.edu> In-Reply-To: <20060616102239.U72162@bas.flux.utah.edu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Uwash-Spam: Gauge=IIIIIII, Probability=7%, Report='__CT 0, __CTE 0, __CT_TEXT_PLAIN 0, __HAS_MSGID 0, __MIME_TEXT_ONLY 0, __MIME_VERSION 0, __SANE_MSGID 0, __USER_AGENT 0' Subject: Re: ripping "enhanced" audio CDs 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: Fri, 16 Jun 2006 17:02:37 -0000 Mac Newbold wrote: > Yesterday at 4:23pm, Mac Newbold said: > >> Today at 2:55pm, Mikhail Goriachev said: >> >>>> Jun 14 11:27:21 mybox kernel: acd0: FAILURE - READ_CD HARDWARE ERROR >>>> asc=0x08 ascq=0x01 error=0 >>>> Jun 14 11:27:21 mybox kernel: acd0: FAILURE - READ_CD ILLEGAL REQUEST >>>> asc=0x64 ascq=0x00 error=0 >>>> Jun 14 11:27:22 mybox last message repeated 11 times >>> >> >> I am pretty sure this isn't an anti-piracy feature. It happens to me >> with _any_ "enhanced CD" (audio+data mixed CD), and _only_ on >> enhanced CDs. Never has it happened to me on any non-enhanced audio >> CD. My problem is not with the inability to get the data off, that >> doesn't seem to be a real issue. The problem is with the crashing of >> the computer. >> >> Why should _any_ data read from a removable disk of any kind be >> causing FreeBSD to crash by the mere act of attempting to read it >> from the disk? The device is reporting a failure, but why isn't the >> OS handling that failure gracefully? >> >> If I'm asking the wrong list, and should be asking >> hackers@freebsd.org or some list related to multimedia, please let me >> know. > > > Thanks to everyone who has contributed answers to this thread. (BTW, > it is helpful if you keep me cc'd in your replies, since I'm not on > the list itself and only see responses when I go check the archive.) > > To answer some of the questions that came up: > > 1. It never happens on any plain/normal/non-enhanced audio CD I've > tried, which I'm quite sure might include some that are "copy > protected" or have some kind of DRM in place. > > 2. None of them have said anything about being non-functional or > limited with certain computer players or operating systems that I have > noticed. > > If we can, I'd like to take this discussion in a slightly different > direction. Let's change our thinking by making the following assumptions: > > A. It is not a DRM or copy protection scheme causing the errors. > > B. Since it happens on every "enhanced" CD (i.e. one containing audio > tracks and a data track meant to be read on a computer) that I've been > able to try, but not on any non-enhanced CDs, of which I've tested > many hundreds, let's assume it is related to the fact that it is > enhanced. > > By combining assumption A and assumption B, I'm led to the conclusion > that there is something about Enhanced CDs that is causing FreeBSD to > get unrecoverable errors that lead inevitably to a system crash. > Namely, it generates "READ_CD Hardware Error" messages, followed by a > series of "READ_CD Illegal Request" messages immediately prior to the > crash. > > Does anyone have some ideas (other than copy protection or DRM) on why > this might be happening or what might be done to solve the problem? > > Does anyone have some ideas of other places or lists where I might ask > a similar question and be more likely to get closer to solving the > problem? > > Thanks again, > Mac Ok then... what is the CD drive and model? -Garrett