From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 20 Sep 2001 14:19:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 20 Sep 2001 14:19:52 -0400 Received: from rcum.uni-mb.si ([164.8.2.10]:56335 "EHLO rcum.uni-mb.si") by vger.kernel.org with ESMTP id ; Thu, 20 Sep 2001 14:19:22 -0400 Date: Thu, 20 Sep 2001 20:19:43 +0200 From: David Balazic Subject: Linux not detecting ide0 To: vojtech@suse.cz, "linux-kernel@vger.kernel.org" , andre@linux-ide.org Message-id: <3BAA333F.64725B02@uni-mb.si> MIME-version: 1.0 X-Mailer: Mozilla 4.77 [en] (Windows NT 5.0; U) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit X-Accept-Language: en Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I discovered some weird behavior in IDE interface handling. I some cases linux detects the ide1 channel , but not ide0. More precisely , it prints a line like : ide0: BM-DMA xxxxxx but that is it. Nothing else. No line of : ide0: at 0x0170 blah blah no drives on the channel are recognized. No ide0 entry in /proc/devices etc. ide1 and the devices on it are more or less OK. ( I didn't notice any problems, but it is hard to test if linux does not see the root fs on hda ! ) I tested the redhat kernel-2.4.7-10 and vanilla linux 2.4.9. Hardware details : - MSI K7T Pro2A motherboard , BIOS v2.9 , VIA KT133 chipset, via 686b southbridge - hda is an IBM Deskstar 75GXP 45 GB hard drive ( DTLA-307045 ) ( 80-wire cable, cable-select , connected to the end of the cable, thus master ) - hdb : none - hdc : Acer 1208A CD-RW drive ( cable select (master)) - hdd : Teac CD532E-B CD-ROM ( cable select (slave)) 80-wire cable The way to trigger this is to set one of the IDE devices in BIOS to wrong geometry. Maybe it is a BIOS bug. I some cases I also got a weird line from linux : hd1: C/H/S=0/0/0 from BIOS ignored I thought that disk are enumerated by letter only, not numbers. ( it is H-D-one , not H-D-ell, in case you have a funny font ) -- David Balazic -------------- "Be excellent to each other." - Bill S. Preston, Esq., & "Ted" Theodore Logan - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -