Re: Problems reading one DVD (other DVDs work)

[Jens Axboe]

On Thu, Feb 17 2000, Michael Mess wrote:
> Hi!
> 
> When I try to play the DVD-Video "MADONNA - The Girlie Show - Live Down
> under" (Warner, No 7599-38391-2) with XMOVIE
> (http://heroine.linuxbox.com/xmovie.html) and a Toshiba DVD-RAM SD-W
> 1101 
> the XMOVIE-player crashes immediately.
> 
> dmesg then shows me errors like this.
> 
> CD-ROM I/O error: dev 0b:01, sector 9171972
> sr1: CD-ROM error: [valid=0] Info fld=0x0, Current sr0b:01: sense key
> Illegal Request
> command was: Read (6) 02 fd 01 02 00

sr doesn't print full sense info, so it's a bit hard to know
exactly what's going on here. But my guess is that this DVD is
encrypted  -- and to my knowledge the Toshiba W1101 and W1111
do not support the authentication process.

> So why can't I read from this DVD? Other DVDs can be played without any
> problems. On this DVD I can only play the file video_ts.vob which shows

Are the other DVD's unencrypted?

> Does this DVD have a special format which is not supported by the
> linux-kernel or the drive?

No, when a DVD has scrambled blocks the drive will refuse to read
them without proper authentication. And with your drive, your
basically screwed.

-- 
*  Jens Axboe <[e-mail]>
*  Linux CD-ROM Maintainer
*  http://www.kernel.dk