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[vdr] AW: Re: DVD on USB 2
> On Wednesday 07 August 2002 08:02, Tilo Renkl wrote:
> > Hi List,
> > today I bought an external USB 2.0 case for my DVD drive.
> First time I
> > thought it works
> > flawless, but when I tried to play a DVD video I get an
> errormessage like
> > this:
> > libdvdcss error: css error: ioctl_ReadCopyright failed,
> make sure DVD
> > ioctls were compiled in ...
> interessting ...
> > Anyone here who can give me a hint ?
> can you give some more hints on what kernel modules are used
> for this?
> I had a quick through the kernel source, and i appears as if
> native USB
> storage devices run SCSI over USB, with that it shouldn't be
> a problem.
> Freecom and others external USB-to-IDE cases use some other
> protocol. I have
> not yet found out, how they will handle the CD and DVD ioctls.
The device to handle this DVD is /dev/sr0, and thats afaik a SCSI device.
I can mount CDs and even DVDs and I can read and copy anything on it.
The kernel modules are afaik native SCSI support, SCSI CD-support and
USB Mass-storage support.
It seems to me that native access to DVD is no problem, but libdvdcss and
libdvdread want to access the DVD in a specific "hardware" way.
I tried to find any other device that works, but I was not sucessfull :-((
For me USB is the only way to use DVD and/or S/VCD with VDR, because my
is not in my living room (it is very noisy; P4 2,2 GHz, 500 GB) and so I
to use a long cable (15 meters) to connect a DVD to the VDR.
> > Btw. "normal" reading of CDs and DVDs works perfect ! And I
> do not know if
> > it plays any role,
> > but I am running kernel 2.4.19.
> 2.4.19 is IMHO the first released kernel with USB 2.0, so you
> can't downgrade!
Sure, you are right, but I think even with kernel 2.4.10 and USB 1.1
it would not work.
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