From mboxrd@z Thu Jan 1 00:00:00 1970 From: thahn01@t-online.de (Thomas Hahn) Subject: Accessing CDROM drive in laptop SATA/PATA hardware config Date: Wed, 15 Aug 2007 14:15:30 +0200 Message-ID: <20070815121530.GA11191@athlona> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mailout06.sul.t-online.de ([194.25.134.19]:47944 "EHLO mailout06.sul.t-online.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1763358AbXHONBE (ORCPT ); Wed, 15 Aug 2007 09:01:04 -0400 Content-Disposition: inline Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Jeff Garzik Cc: linux-ide@vger.kernel.org Hello, I have tried to get some help from linux.debian.laptop but so far no replies. Sorry if I address the wrong people ... I have a Toshiba M40X-112 laptop. ---snip--- Linux satellita 2.6.22-1-686-bigmem #1 SMP Sun Jul 29 15:54:01 UTC 2007 i686 GNU/Linux ---snap--- So far I am quite happy with it, but the DVD-writer does not work. I am getting loads of: ---snip--- Aug 6 13:39:01 satellita kernel: sr0: CDROM not ready. Make sure there is a disc in the drive. Aug 6 13:39:32 satellita last message repeated 31 times ---snap--- Message comes every second. I have googled around and this problem comes up quite a few times. Most remedies deal with older kernels and so far I cannot figure out a way to make it work. When I look at kernel messages, there is: ---snip--- Aug 6 13:39:01 satellita kernel: sr0: CDROM not ready. Make sure there is a disc in the drive. Aug 12 17:02:36 satellita kernel: ahci: probe of 0000:00:1f.2 failed with error -22 Aug 12 17:02:36 satellita kernel: ata_piix 0000:00:1f.2: MAP [ P0 P2 IDE IDE ] Aug 12 17:02:36 satellita kernel: ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 19 (level, low) -> IRQ 19 Aug 12 17:02:36 satellita kernel: scsi0 : ata_piix Aug 12 17:02:36 satellita kernel: scsi1 : ata_piix Aug 12 17:02:36 satellita kernel: ata1: SATA max UDMA/133 cmd 0x000101f0 ctl 0x000103f6 bmdma 0x000118b0 irq 14 Aug 12 17:02:36 satellita kernel: ata2: PATA max UDMA/100 cmd 0x00010170 ctl 0x00010376 bmdma 0x000118b8 irq 15 ---snap--- So for me it looks like the ahci module is giving up and ata_piix is taking over. lsmod prints out: ---snip--- Aug 6 13:39:01 satellita kernel: sr0: CDROM not ready. Make sure there is a disc in the drive. sr_mod 17284 1 cdrom 33568 1 sr_mod sd_mod 27904 6 ata_piix 14148 6 ahci 22020 0 ata_generic 8324 0 libata 116624 3 ata_piix,ahci,ata_generic scsi_mod 137388 5 firewire_sbp2,sg,sr_mod,sd_mod,libata ---snap--- lspci shows: ---snip--- 00:1f.2 IDE interface: Intel Corporation 82801FBM (ICH6M) SATA Controller (rev 03) ---snap--- kernel command line is: ---snip--- Aug 12 17:02:36 satellita kernel: Kernel command line: root=/dev/sda5 ro libata.atapi_enabled=1 ---snap--- So I have tried this libata.atapi_enabled=1 option, but this doesnt help. Later I have read some more and added /etc/modprobe.d/libata: ---snip--- # Thomas Hahn, 14.08.2007 options libata atapi_enabled=1 ---snap--- So, here you see I am really not sure what is going on ... I would like to access the CDR and use the faster ahci driver. Any advice? Thanks Thomas -- Thomas Hahn == thahn01@t-online.de