[mythtv] Re: [mythtv-commits] mythtv commit: r7133 by danielk

[Allan Stirling]

Allan Stirling wrote:
> Daniel Kristjansson wrote:
> 
>> On Thu, 2005-08-25 at 22:16 +0100, Allan Stirling wrote:
>>
>>> 2005-08-25 22:09:05.942 PSIP packet failed CRC check. pid(0x104) 
>>> type(0x2)
>>
>>
>>
>> Ok, I'm ignoring your second problem for now. Attached is a patch
>> that will print out the PMT that is failing the CRC check. If it
>> looks ok then maybe we can just pretend that it is OK based on some 
>> option or hardware detection rutine.
>>
>> If it the PMT looks ok to you, you can try skipping the CRC check
>> altogether when (TableID::PMT == psip->TableID()). See if that lets
>> you tune. The CRC check should hardly ever fail for the PMT table
>> unless there is a problem at the transmitter. There are layers of
>> ECC protection before the CRC, and that table is sent so infrequently
>> as compared to say EIT tables, that you shouldn't see any CRC failures
>> on it by chance.
>>
>> -- Daniel

OK. According to dvbsnoop, the packets are identical coming from both cards:

dvbsnoop -demux /dev/dvb1.demux0 -dvr /dev/dvb1.dvr0 -frontend 
/dev/dvb1.frontend0 -n 1 -npd 260
   0000:  02 b0 b7 c7 39 e3 00 00  e9 03 f0 11 0b 02 4a 1f 
....9.........J.
   0010:  0e 03 c0 2b 2c 10 06 c0  2b 2a c0 08 00 02 e9 09 
...+,...+*......
   0020:  f0 10 0e 03 c0 22 4e 02  03 1a 48 5f 06 01 04 52 
....."N...H_...R
   0030:  01 02 04 e9 0a f0 11 0e  03 c0 01 68 03 01 6f 0a 
...........h..o.
   0040:  04 75 72 64 00 52 01 9e  04 e9 0b f0 11 0e 03 c0 
.urd.R..........
   0050:  01 68 03 01 6f 0a 04 65  6e 67 00 52 01 9f 04 e9 
.h..o..eng.R....
   0060:  0c f0 11 0e 03 c0 01 68  03 01 6f 0a 04 66 72 65 
.......h..o..fre
   0070:  00 52 01 a0 04 e9 0d f0  11 0e 03 c0 01 68 03 01 
.R...........h..
   0080:  6f 0a 04 67 65 72 00 52  01 a1 04 e9 0e f0 11 0e 
o..ger.R........
   0090:  03 c0 01 68 03 01 6f 0a  04 62 65 6e 00 52 01 a2 
...h..o..ben.R..
   00a0:  04 e9 0f f0 11 0e 03 c0  01 68 03 01 6f 0a 04 61 
.........h..o..a
   00b0:  72 61 00 52 01 a3 2c 24  e5 5b                     ra.R..,$.[

Cheers,

Allan.