[linux-dvb] Re: Which DVB-S card ?

[Denis Cheong <denis@denisandyuki.net>]

I just recently installed a brand new system with Gentoo, it had nothing 
in the box except for the DVB-S card.  Exhibited the same problems as 
the old system started developing - CAM initialised, DVB stream is never 
recognised as MPEG audio or video by MythTV, occasionally there is a 
glitch in transmission and 5-10 seconds gets transmitted unencrypted and 
that's all I get (this sometimes happens when the smartcard isn't even 
in the CAM, so it must be a transmission glitch rather than a 
decryption-working situation).

When it was reliably working I did post in this forum to say so, but not 
long afterwards there was a serious bug in MythTV that reared its head - 
mythbackend would crash due to an recursive function call in a poorly 
written subroutine.  Eventually I found it and fixed it, but by then I 
had cvs updated my source dozens of times for both Myth and dvb-kernel, 
hoping to find a version that had the bug fixed, and it was no longer 
decrypting the DVB stream reliably.

I have reverted to the CVS builds of both MythTV and dvb-kernel from the 
date of my post when I had it working, but still I get no decrypted 
streams from the card - as I said previously I've pretty much tried 
everything to get this thing working.

Irek Defee wrote:

> All the information was somehow said on the linuxdvb list if you search 
> exchanges on the CI development.  I have TT budget cards with CAM and
> without and I was interested in running CAM. 
> The CI driver is experimental, incomplete and it may have bugs. But the 
> biggest problem is support for different systems. 
> Of course it is puzzling  if you had it working and now it is not
> working.
> Have you checked with newly installed system? 
> My problem for is that I would need to get full TS decrypted and stream
> it out of the card. But I do not know if full feature card is able to do
> this if it has the right cam or it can only output single pids.
>
> Irek
>
> -----Original Message-----
> From: linux-dvb-bounce@linuxtv.org [mailto:linux-dvb-bounce@linuxtv.org]
> On Behalf Of Denis Cheong
> Sent: 13. elokuuta 2004 12:32
> To: linux-dvb@linuxtv.org
> Subject: [linux-dvb] Re: Which DVB-S card ?
>
> This is very interesting information, and was not apparent from any 
> documentation I've seen for the budget-ci card or any other mailing
> list!
>
> I do of course know that it hasn't been released officially - it is only
>
> in the CVS of course.  And as I said I do acknowledge the hard work of 
> the developers to get the drivers to this stage.
>
> The card in my case is a Technotrend (which is the same as the Nova - 
> but is this a chicken-and-egg thing?) but looking at the source code, 
> there isn't enough documentation to figure out what's going on and find 
> out where it's bombing out (well it doesn't really bomb out, just 
> doesn't work).
>
> This being all said, I've seen it actually work and decode a significant
>
> amount of video, but why it doesn't work any more I still can't figure 
> out ...
>
> Still, and all things and hard work acknowledged, what I originally 
> stated remains the case - if you are after a card that will decrypt 
> using a CAM under linux, then you are well-advised to steer clear of the
>
> budget-ci cards for the time being.
>
> Irek Defee wrote:
>
>  
> > The CI driver in fact was never released officially. And the 
> > difference with full feature card is that there CI software is 
> > in the card.
> >
> > I don't know if the Linux driver developers can be blamed for this.
> >    
> They
>  
> > are extremely bright and they would surely do it. Or maybe they even 
> > have done this for themselves already.
> >
> > But as I heard from the mailing list one of the main problems in
> > implementing CI software for NOVA was that the CAM control software is
> > not done according to the standard, there are proprietary parts. This
> > requires cooperation with the system owners (e.g. Iredto) to implement
> > it. And system owners are not willing to cooperate since they don't
> >    
> want
>  
> > to release the 
> > software to the public domain. Trying to find out the way to 
> > communicate with CAM might be illegal. This is why everything works in
> > Windows and in FF card but not in NOVA.
> >
> > Irek
> >
> >
> >    
>
>
>
>
>
>