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

Zoilo Gomez zoilo at xs4all.nl
Tue Aug 15 22:33:51 CEST 2006


Manu Abraham wrote:

>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 ?
>  
>

Oh sorry, you meant during tuning of course:

On 2.6.17.8 + v4l-dvb (catch of the day):

dst(0) dst_set_freq: set Frequency 306750000
dst(0) dst_set_frontend: Set Frequency=[306750000]
dst(0) dst_set_symbolrate: set symrate 6900000
dst(0) dst_set_symbolrate: DCT-CI
dst(0) dst_write_tuna: type_flags 0x1219
dst(0) dst_comm_init: Initializing DST.
dst(0) dst_gpio_outb: mask=[ffffffff], enbb=[0001], outhigh=[0000]
dst(0) rdc_reset_state: Resetting state machine
dst(0) dst_gpio_outb: mask=[0002], enbb=[0002], outhigh=[0000]
dst(0) dst_gpio_outb: mask=[0002], enbb=[0002], outhigh=[0002]
writing [ 09 00 04 ae 3e 00 1a f4 40 b9 ]
dst(0) dst_gpio_outb: mask=[ffffffff], enbb=[0000], outhigh=[0000]
dst(0) read_dst: reply is 0xff
dst(0) dst_wait_dst_ready: dst wait ready after 42
dst(0) read_dst: reply is 0x9
 0x0 0x4 0xae 0x3e 0x0 0x1a 0xf4 0x40 0xb9
dst(0) dst_get_tuna: checksum failure?


And on 2.6.13.3 + vlc-dvb=20060115:

dst_set_freq: set Frequency 306750000
dst_set_frontend: Set Frequency=[306750000]
dst_set_symbolrate: set symrate 6900000
dst_write_tuna: type_flags 0x19
dst_comm_init: Initializing DST.
dst_gpio_outb: mask=[ffffffff], enbb=[0001], outhigh=[0000]
rdc_reset_state: Resetting state machine
dst_gpio_outb: mask=[0002], enbb=[0002], outhigh=[0000]
dst_gpio_outb: mask=[0002], enbb=[0002], outhigh=[0002]
writing [ 09 00 04 ae 3e 00 1a f4 40 b9 ]
dst_gpio_outb: mask=[ffffffff], enbb=[0000], outhigh=[0000]
read_dst: reply is 0xff
dst_wait_dst_ready: dst wait ready after 2
read_dst: reply is 0x9
 0x0 0x4 0xae 0x3e 0x0 0x1a 0xf4 0x40 0xb9



Mmmmh, that checksum error in todays hg looks suspicious ....

Z.




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