Re: Misidentification and failing revalidations of ide dvd-roms withlibata
From: Simen Timian Thoresen
Date: Sun Jul 27 2008 - 15:33:19 EST
Alistair John Strachan wrote:
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.
Hi Alistair, Alan,
I've spent a few hours more looking into this, and I'm not really
getting much clearer;
I've run either and both of the two DVDroms on an external power-supply
(drive-power from a jumped, believed good ATX-PSU), and the the symptoms
remain; inconsistent capabilities reported at boot, and when I start
ripping CDs, one of them will fail as above.
As I still have the impression that this started when I switched distros
(ie went from CentOS4 2.6.9 pre-libata-kernel to the current Ubuntu 8.04
2.6.24-kernel), I've now started playing around with the libata module
parameters.
Further suggestions are most welcome .-)
Yours,
-S
--
Simen Thoresen, Dolphin ICS
Systems Administration and Wulfkit Support
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