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Date: Tue, 14 Nov 2000 10:48:22 -0800 (PST)
From: Andre Hedrick <andre@linux-ide.org>
To: davej@suse.de
cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        mharris@opensourceadvocate.org
Subject: Re: UDMA66/100 errors...
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Because he has not set the ignore valid bits and the 66 ribbon is not
detected.

Cheers,

On Tue, 14 Nov 2000 davej@suse.de wrote:

> 
> Mike Harris wrote..
> 
> >I'm getting the following error when I try and enable UDMA on my
> >new IBM Deskstar UDMA100 drive:
> >...
> > DMA modes: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 udma5
> 
> Ok, the drive supports UDMA5 (ATA100)
> 
> > setting xfermode to 67 (UltraDMA mode3)
> >ide0: Speed warnings UDMA 3/4/5 is not functional.
> 
> Why can this be?
> 
> >00:07.1 IDE interface: VIA Technologies, Inc. VT82C586 IDE [Apollo] (rev 10)
> 
> This chipset only does up to UDMA2.
> 
> regards,
> 
> Davej.
> 
> -- 
> | Dave Jones <davej@suse.de>  http://www.suse.de/~davej
> | SuSE Labs
> 
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> 

Andre Hedrick
CTO Timpanogas Research Group
EVP Linux Development, TRG
Linux ATA Development

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