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

Manu Abraham abraham.manu at gmail.com
Tue Aug 15 21:04:45 CEST 2006


Zoilo Gomez wrote:
> Hi Manu,
> 
> Manu Abraham wrote:
> 
>> 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 ?
>>
>>
>>  
>>
> 
> To check once more, I have just setup once again:
> => linux-2.6.17.8
> => hg v4l-dvb (fresh clone of today)
> 
> At a fresh 'make' on v4l-dvb, I do get several warnings about missing
> kernel configuration flags, but it seems that I can ignore those, as
> none of those seems to affect my configuration.
> 
> The output of dvbscan -v is:
> 


> 
> ... and no PMTs get reported.
> 
> Also vlc complains that 'dvb access warning: no lock, tuning again'
> every 20 seconds or so.
> 
> Unfortunately I cannot test 20060115's snapshot against linux-2.6.17.8
> because the MODULE_PARM macro is no longer supported in 2.6.17 and I get
> a compile error.
> 
> But if I compile with linux-2.6.13.3:
> => vlc-dvb-20060115 works (provided I take out TS204 from DCT-CI record)
> => vlc-dvb hg clone does not work.
> 
> So something seems to be broken...


Is this a card with a CI or just a FTA card ?
Is it the same card ..? http://thadathil.net:8000/gallery/album12

loading dst with verbose=4 and then tuning what messages do you get ?

Manu





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