Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 22 Oct 2001 12:53:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 22 Oct 2001 12:53:28 -0400 Received: from mail.myrio.com ([63.109.146.2]:2292 "HELO smtp1.myrio.com") by vger.kernel.org with SMTP id ; Mon, 22 Oct 2001 12:53:14 -0400 Message-ID: From: Torrey Hoffman To: "'Jens Axboe'" , Torrey Hoffman Cc: "'Peter Moscatt'" , "'linux-kernel@vger.kernel.org'" Subject: RE: Can't see IDE CDR-W after compile ? Date: Mon, 22 Oct 2001 09:53:28 -0700 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-Type: text/plain; charset="iso-8859-1" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I use the cdparanoia ripper. Here's a quote from the cdparanoia FAQ (cdparanoia III - alpha 9.8): "Note that the native ATAPI driver is supported, but that IDE-SCSI emulation works better with ATAPI drives. This is an issue of control; the emulation interface gives cdparanoia complete control over the drive whereas the native ATAPI driver insists on hiding the device under an abstraction layer with poor error handling capabilities. Note also that a number of ATAPI drives that do not work at all with the ATAPI driver (error 006: Could not read audio) *will* work with IDE-SCSI emulation." That, (and the actual performance difference I experienced) is about all I know about the reasons behind this problem. I also used to read the cdrecord mailing list, and IIRC, Jorg Schilling (author of cdrecord, general expert on CD ROM stuff) is not too impressed with the default Linux driver. I don't remember the details... I do hope this gets sorted out properly in 2.5. Perhaps all that's needed is better hints for people as they configure the kernel, or an "auto-configure" that actually works for the 90% of users who aren't experts on this stuff. With the 2.5 makefile rewrites this may be easy to do. Or perhaps the IDE-CD driver should be deprecated, kind of like the old disk-only IDE driver? Torrey Jens Axboe wrote: > On Fri, Oct 19 2001, Torrey Hoffman wrote: > > The other driver is the IDE-SCSI emulation layer. This > works better for > > some things, including ripping music CD's. And, as you > have discovered, it > > is a requirement for CDR's. For example, using the > IDE-SCSI driver I can > > rip audio with my Toshiba DVD drive at 10x speed, but with > the "normal IDE" > > driver it could not even go at 1x speed. > > THat is funny, since the code for ripping audio is in the > generic CDROM > layer and this shared by both ide-cd and sr. Exactly the same cdb is > sent down regardless of your setup. > > So maybe your ripping program is accessing the CDROM differently > depending on the bus type (eg using sg for sr, maybe?). > > -- > Jens Axboe > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/