[mythtv-users] Ideas to diagnose one faulty DVB-T adapter (on a dual adapter USB stick)

[Mike Perkins]

On 30/10/12 18:12, John Pilkington wrote:
> On 30/10/12 17:19, Dan Gravell wrote:
>> I first set up my MythTV backend a few months ago. I got it all working with
>> one WinTV Duet stick. Both adapters were working at this stage; I could record
>> two channels at once.
>>
>> Now I've come back to it and it seems like the first adapter does not work. I
>> guess Myth defaults to the first as I cannot get a lock in Live TV and
>> recordings all fail.
>>
>> Any ideas to diagnose why one of the tuners on my WinTV Duet works and the
>> other doesn't? Scanning the second adapter brings back channels, e.g:
>>
>> sudo scan /usr/share/dvb/dvb-t/uk-CrystalPalace -a 1 -o zap
>>
>> But scanning the first finds nothing but gives lots of 'WARNING: filter
>> timeout pid 0x0000' messages:
>>
>> gravelld at bordeaux:~$ sudo scan /usr/share/dvb/dvb-t/uk-CrystalPalace -o zap
>> scanning /usr/share/dvb/dvb-t/uk-CrystalPalace
>>
>> using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
>> initial transponder 506000000 0 3 9 3 1 0 0
>> initial transponder 482000000 0 3 9 3 1 0 0
>> initial transponder 490000000 0 2 9 3 1 0 0
>> initial transponder 514000000 0 2 9 3 1 0 0
>> initial transponder 529833000 0 3 9 3 1 0 0
>>>>> tune to:
>>>>> 506000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE
>>>>>
>> WARNING: filter timeout pid 0x0011
>> WARNING: filter timeout pid 0x0000
>> WARNING: filter timeout pid 0x0010
>>>>> tune to:
>>>>> 482000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE
>>>>>
>> WARNING: filter timeout pid 0x0011
>> WARNING: filter timeout pid 0x0000
>> WARNING: filter timeout pid 0x0010
>>>>> tune to:
>>>>> 490000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE
>>>>>
>> [and so on...]
>>
>> Dan
>
> Why not use the tools in MythTV?  If you know you should use Crystal Palace it
> ought to be easy - unless, of course, there *is* something wrong, or Myth won't
> recognise the device.  There have been lots of posts about this sort of thing.
> Here' a recent one that should get you going in a few minutes.
>
> http://www.gossamer-threads.com/lists/mythtv/users/531976#531976
>
Did you even read his problem? How is that supposed to diagnose a dead tuner? He 
can get Crystal Palace perfectly well using tuner 1; for tuner 0 he just gets 
errors.

-- 

Mike Perkins