[linux-dvb] Twinhan DVB Cab/CI (2031) problems

Manu Abraham abraham.manu at gmail.com
Tue Aug 15 15:50:43 CEST 2006


Zoilo Gomez wrote:
> I decided to do some tests using kernel 2.6.13.3, with following results:
> 
> 1) locking problems occur using "dvbscan -v" (nut also ("vlc -v") in the
> following situations:
> => 2.6.13.3 kernel with downloaded snapshot 20051202: locks fine,
> dvb-scan returns 0x1f and dumps PMT quickly
> => 2.6.13.3 kernel with downloaded snapshot 20060115: locks fine,
> dvb-scan returns 0x1f and dumps PMT quickly
> => 2.6.13.3 kernel with downloaded snapshot 20060715: no lock, dvb-scan
> returns 0x00 + timeout!
> => 2.6.13.3 kernel with downloaded snapshot 20060717: no lock, dvb-scan
> returns 0x00 + timeout!
> => 2.6.13.3 kernel with downloaded hg snapshot: no lock, dvb-scan
> returns 0x00 + timeout!
> 
> So it seems that something has gone wrong between snapshots from January
> and July, with these locking problems as a result.
> 
> The strange thing is that the locking problems do not prevent xine or
> vlc from coming up with streaming data (picture), however in between
> "vlc -v" prints 'no lock' every 15 seconds or so, but keeps going anyway
> ....
> 
> Of course I would prefer to use the latest dvb-version, but I cannot get
> it to work for reasons mentioned above.
> 
> What could possibly be wrong?
> 
> Can someone tell me who has a more recent working combination (recent
> kernel + recent dvb-snapshot)?
> 
> 2) in all dvb-snapshot versions that have I tested, I always need to
> remove the DST_TYPE_HAS_TS204 flag from the "DCT-CI" record in dst_list
> (dst.c), or I will not get a picture; only a long list of TS
> discontinuities. Aren't the necessary patches (Sept 2005) present in
> recent snapshots? I don't understand why I keep running into this
> problem ....


In the latest v4l-dvb HEAD if you have the TS204 flag, it fixes your
problems ?


Manu



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