[linux-dvb] Re: Problems with WinTV NOVA-CI

[Werner Hauger <whauger@gmail.com>]

On Tue, 14 Dec 2004 10:23:24 +0000, Andrew de Quincey
<adq_dvb@lidskialf.net> wrote:
> On Tuesday 14 Dec 2004 09:38, Werner Hauger wrote:
> > On Mon, 13 Dec 2004 13:20:31 +0000, Andrew de Quincey
> >
> > <adq_dvb@lidskialf.net> wrote:
> > > I also never saw this behaviour when I was developing the budget_ci
> > > driver for the TT Nova-S-CI.
> >
> > Yes, I know from the mailing list archives that you developed the
> > budget_ci driver. Thank you for taking the time to make this card
> > fully supported under Linux. But this also means you would be the best
> > person to ask about my second problem. I know the CI init code is
> > still commented out, so what are the reasons/problems ? Did you test
> > VDR with the CI code ? As stated in my first post, it works fine on
> > the first channel, but subsequent channels only work when the CAM is
> > reset after a channel switch. What debugging info can I enable/add in
> > the driver to help locate the problem ? I get the feeling the CAM does
> > not respond properly any more after going into the decoding state.
> 
> Are you using 2.6? If so, CVS HEAD has had the CAM stuff uncommented for a
> long time with various bug fixes for crashes and timeouts.

No, 2.4. I have seen this in the CVS HEAD comments, and applied all
the relevant bug fixes to the 2.4 code. Now the timeout messages are
gone and the link layer failure does not occur any more, but after
switching channel, nothing happens. Screen stays black, no error
messages. Only after a certain time VDR complains : ERROR: no useful
data seen within 10552440 byte of video stream.

> 
> When you say reset the cam, what do you mean exactly?
> 

In VDR under the CICAM menu there is a Reset option. Calling that
prints the following line in the logs: dvb_ca: DVB CAM detected and
initialised successfully. This exactly the same message as when the
driver first loads.