From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261900AbULUXjT (ORCPT ); Tue, 21 Dec 2004 18:39:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261902AbULUXjT (ORCPT ); Tue, 21 Dec 2004 18:39:19 -0500 Received: from mail25.syd.optusnet.com.au ([211.29.133.166]:6279 "EHLO mail25.syd.optusnet.com.au") by vger.kernel.org with ESMTP id S261900AbULUXjJ (ORCPT ); Tue, 21 Dec 2004 18:39:09 -0500 Message-ID: X-Mailer: http://www.courier-mta.org/cone/ From: Con Kolivas To: axboe@suse.de Cc: linux-kernel@vger.kernel.org Subject: DVD-RW writes but doesn't read Date: Wed, 22 Dec 2004 10:33:57 +1100 Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset="US-ASCII" Content-Disposition: inline Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi Jens et al I have a laptop DVD-RW that is working fine when burning but has endless streams of errors with any kernel I try when trying to read anything (cd/dvd audio/video/data). hdc: command error: status=0x51 { DriveReady SeekComplete Error } hdc: command error: error=0x50 ide: failed opcode was 100 end_request: I/O error, dev hdc, sector 571832 Buffer I/O error on device hdc, logical block 71479 If I'm persistent I can read the data off the drive but I'll probably kill the drive in the process. It doesn't matter what iosched I use but I use cfq by default. I've tried disabling dma and so on without success. Any ideas? Con Here is some relevant data lspci -vvv 00:1f.1 IDE interface: Intel Corp. 82801DBM (ICH4) Ultra ATA Storage Controller (rev 03) (prog-if 8a [Master SecP PriP]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR- Region 1: I/O ports at Region 2: I/O ports at Region 3: I/O ports at Region 4: I/O ports at 1100 [size=16] Region 5: Memory at 3e000000 (32-bit, non-prefetchable) [size=1K] hdparm -i /dev/hdc /dev/hdc: Model=MATSHITADVD-RAM UJ-820S, FwRev=1.00, SerialNo= Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic } RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0 BuffType=unknown, BuffSize=0kB, MaxMultSect=0 (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 *udma2 AdvancedPM=no Drive conforms to: device does not report version: * signifies the current active mode