[linux-dvb] KNC DVB-C/CI + Nagravision CAM: discontinuity error
zoilo at xs4all.nl
Thu Dec 7 15:05:34 CET 2006
I have a really weird problem with KNC DVB-C/CI + Nagravision CAM, with
latest hg version, as well as with all other older versions that I have
Using czap, I can lock properly to all frequencies. On about 2/3 of all
cable frequencies, I can also watch the channels; however, on about 1/3
of all cable frequencies, I get an enormous amount of 'Discontinuity
Over the last days, I have verified that these continuity errors really
do exist (printks in driver source demux), and that the missing packets
are really not being delivered by the CAM-module: about 25% of the
pcakets seem to be missing, and the continuity counter has many gaps,
sometimes even 2 or more consecutive packets are missing. As soon as I
unplug the CAM-module, the problem is fixed; if I plug it back in then
the problem is back.
In other towns (with same provider) the problems exist as well, but on
different frequencies .... In fact, I discovered it because one
frequency that had been working fine for 2 months, suddenly came with
this problem, causing an enormous log file full of discontinuity errors,
filling up my /var partition within 12 hours => disk full (!).
Apparently the TS-multiplexer at the provider plays some role in this as
Of course, I cannot watch the channels in these streams when they have
discontinuity errors; on Windows however I can always watch these
channels seamlessly (quite embarrassing)! Also using a Twinhan Cab/CI
2031 these same channels are being decoded properly! Here there seems to
be no discontinuity error problem.
So I guess that the problem seems to be somehow related to the way the
CAM-module is being initialized or so .... anybody any ideas?
More information about the linux-dvb