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, 8 Mar 2001 03:02:01 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 8 Mar 2001 03:01:51 -0500 Received: from mx0.gmx.net ([213.165.64.100]:33840 "HELO mx0.gmx.net") by vger.kernel.org with SMTP id ; Thu, 8 Mar 2001 03:01:37 -0500 Date: Thu, 8 Mar 2001 09:01:15 +0100 (MET) From: To: linux-kernel@vger.kernel.org Subject: Re: IDE bug in 2.4.2-ac12? In-Reply-To: <20010307202016.B5030@suse.cz> Message-ID: <31749.984038475@www28.gmx.net> Mime-Version: 1.0 X-Priority: 3 (Normal) X-Authenticated-Sender: #0009979400@gmx.net X-Mailer: WWW-Mail 1.5 (Global Message Exchange) X-Authenticated-IP: [141.76.11.162] X-Flags: 0001 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Vojtech Pavlik wrote: > On Tue, Mar 06, 2001 at 09:32:46PM +0000, Paul Bristow wrote: > > On Tuesday 06 March 2001 19:13, Konrad Stopsack wrote: > > > Hello guys, > > > > > > I hope you've read my posting "DMA problem with ZIP drive and VIA > > > VT82C598MVP / VT82C586B chip" (why does anybody answer?). > > > I now tried the 2.4.2-ac12 kernel including the latest VIA 82c586b > driver > > > (version 3.21), but the effects were almost the same: > > > - just when the kernel tried to access to the hard disk during boot, > DMA > > > errors were occured > > > - "hdparm /dev/hda" displayed 9 MB per second (and not 11 MB like > without > > > ZIP) - /proc/ide/via reported 16 MB transfer rate (and not 33MB like > > > without ZIP drive) > > > - Kernel 2.4.2-ac12 reports a "ide-floppy: hdd: I/O error, pc = 5a, > key = > > > 5, asc = 24, ascq = 0" error, 2.4.2 doesn't > > > > > > My IDE configuration is: > > > /dev/hda: Hard disk => Primary IDE controller > > > /dev/hdc CD-ROM => Secondary IDE controller > > > /dev/hdd: ZIP => Secondary IDE controller > > > > > > Could you please tell me whether it's a bug or a feature? > > > > OK. The ZIP drive can not handle uDMA, so it's normal for the secondary > > > controller to drop back. In my opinion, the primary controller should > stay > > at uDMA speed, but it is PC hardware so it is perfectly possible there > is > > something cheap that locks them together. I will bring up ac-12 and > check > > the error message... > > Actually I'm beginning to suspect the PSU here ... does removing the > CD-ROM (leaving just the HDD and the ZIP in) help? Does the ZIP cause > errors even when connected just to the power cable (and not the IDE > cable)? > Do you mean the Power Supply Unit? Or the Program Storage Unit? ;-) To answer to your questions: - I haven't tried to remove the CD-ROM because both devices shall work together - the ZIP doesn't cause problems when just the power cable is connected Although my PC has only got an old Baby AT 200W power supply I don't think that's the point. cu Konrad -- Konrad Stopsack - konrad@stopsack.de Sent through GMX FreeMail - http://www.gmx.net