From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 18 May 2002 08:42:02 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 18 May 2002 08:42:01 -0400 Received: from mail.s3.kth.se ([130.237.48.5]:13067 "EHLO elixir.e.kth.se") by vger.kernel.org with ESMTP id ; Sat, 18 May 2002 08:42:00 -0400 To: linux-kernel@vger.kernel.org Subject: Re: ide cd/dvd with 2.4.19-pre8 In-Reply-To: From: mru@users.sourceforge.net (=?iso-8859-1?q?M=E5ns_Rullg=E5rd?=) Date: 18 May 2002 14:42:00 +0200 Message-ID: User-Agent: Gnus/5.0807 (Gnus v5.8.7) XEmacs/21.1 (Channel Islands) MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Andre Hedrick writes: > The driver pulled your system back into safe data io ranges. > Either your cable routing is poor, I use the cable that came with the controller. It runs as strait as the box allows. How sensitive are these things really? > your power supply is marginal, possible It's 300 W. Isn't that enough? > but not likely (hardware combination does not like the odd or even cable > grounding setup), regardless it did the correct thing. > > The problem is a feature to prevent the driver from dropping out of DMA > to PIO when it is better to down grade the transfer rate. > > The next issue is whether your ATAPI is in DMA, and it should not be. > The driver core does not use split dma engines yet. Was there some change from 2.4.18 to 19-pre8 in this area? Is there any way to use the disk in udma5? Can there be compatibility problems with the disk? -- Måns Rullgård mru@users.sf.net