From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932138AbVIENdY (ORCPT ); Mon, 5 Sep 2005 09:33:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932198AbVIENdY (ORCPT ); Mon, 5 Sep 2005 09:33:24 -0400 Received: from smtp2.belwue.de ([129.143.2.15]:43653 "EHLO smtp2.BelWue.DE") by vger.kernel.org with ESMTP id S932138AbVIENdX (ORCPT ); Mon, 5 Sep 2005 09:33:23 -0400 From: Oliver Tennert To: linux-kernel@vger.kernel.org Subject: DVD+-R[W] regression in 2.6.12/13 Date: Mon, 5 Sep 2005 15:33:01 +0200 User-Agent: KMail/1.8.2 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200509051533.01465.tennert@science-computing.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello together, with my machine, an "hdparm -I /dev/dvdrecorder" leads to the output: /dev/dvdrecorder: HDIO_DRIVE_CMD(identify) failed: Input/output error The kernel tells me: [4296893.262000] hdd: drive_cmd: status=0x51 { DriveReady SeekComplete Error } [4296893.262000] hdd: drive_cmd: error=0x04 { AbortedCommand } [4296893.262000] ide: failed opcode was: 0xec This happens with 2.6.12 and 2.6.13. DMA works fine, though. And burning CDs/DVDs seems to work fine, too. The same hdparm command to a "normal" CD or DVD ROM drive (no writer) does not produces any error messages, though. So what does this strange opcode do, and why does it fail in the latest kernels? /dev/dvdrecorder is a Plextor 708A, the error also occurs with a Plextor 716A. Best regards Oliver -- The problem with engineers is that they tend to cheat in order to get results. The problem with mathematicians is that they tend to work on toy problems in order to get results. The problem with program verifiers is that they tend to cheat at toy problems in order to get results. -- __ ________________________________________creating IT solutions Dr. Oliver Tennert Senior Solutions Engineer CAx Professional Services science + computing ag phone +49(0)7071 9457-598 Hagellocher Weg 71-75 fax +49(0)7071 9457-411 D-72070 Tuebingen, Germany O.Tennert@science-computing.de www.science-computing.de