From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vincent Legoll Subject: ATAPI DVD not detected Date: Wed, 21 Feb 2007 19:05:42 +0100 Message-ID: <200702211905.42115.vincent.legoll@hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from palrel13.hp.com ([156.153.255.238]:36802 "EHLO palrel13.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1422751AbXBUSUi (ORCPT ); Wed, 21 Feb 2007 13:20:38 -0500 Received: from vlegoll.emea.hpqcorp.net (vlegoll.emea.hpqcorp.net [16.16.149.243]) by palrel13.hp.com (Postfix) with ESMTP id 2484E347D0 for ; Wed, 21 Feb 2007 10:07:24 -0800 (PST) Content-Disposition: inline Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: linux-ide@vger.kernel.org Hello, A friend of mine has bought a laptop that has a DVD RAM (Matshita UJ-850S) that is not detected by libata (ata_piix) unless it has booted on a cdrom inserted in that drive. A strange thing is that the drive is listed in the BIOS as being slave on channel 1, with no master. Whereas the HD is master on channel 0 with no slave connected. He had no problem installing ubuntu with a cdrom, but after install, when booting from the HD, the BIOS is probably not initializing the controller (ICH7) the same way and the DVDRAM is not detected by libata. I tried with different kernels, 2.6.17-11 (ubuntu current) 2.6.20 (built manually) or even the 2.6.15-23 that was the one used for installation. Nothing in dmesg, Just the standard line for the PATA channel. Should I log a bug on http://bugzilla.kernel.org to track that issue or nothing can be done with such broken HW setups / BIOSes ? I'll get bootlogs and .configs available if needed. -- Vincent Legoll