From: Alistair John Strachan <alistair@devzero.co.uk>
To: Simen Timian Thoresen <simentt@dolphinics.no>
Subject: Re: Misidentification and failing revalidations of ide dvd-roms with libata
Date: Sun, 20 Jul 2008 21:03:51 +0100
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Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, linux-kernel@vger.kernel.org
References: <48838593.8020007@dolphinics.no> <20080720194628.6c8632cb@the-village.bc.nu> <48839358.8010206@dolphinics.no>
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On Sunday 20 July 2008 20:34:48 Simen Timian Thoresen wrote:
> Alan Cox wrote:
> >> [  155.457098] ata4.00: model number mismatch 'Pioneer DVD-ROM
> >> ATAPIModel DVD-116  0109' != 'Pioïeer¡DVD­ROM¡ATAñIMoåel åVD-±16 ¡010¹'
> >> [  155.457103] ata4.00: revalidation failed (errno=-19)
> >
> > So it failed because the data read from the drive was corrupted.
> >
> >> As I understand, this would most commonly indicate that the drive has
> >> gone bad, but this also occurs on the /other/ drive (same make/model) in
> >
> > Or a cable problem.
>
> Hi Alan,
>
> Should this apply here too? There are two separate cables, and I've
> never seen the other drive to fail after the first drive has failed.
> I've now ripped ~50 CDs with the still working drive, while this drive
> failed during the first 5 CDs on my two previous boots.
>
> I don't doubt that the revalidation goes bad, but I can't see hardware
> being the cause of it as it hits any drive, but so-far only one drive pr
> boot.

Power supply maybe? Check the rails. The +12VDC must be good.

-- 
Cheers,
Alistair.
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