[mythtv-users] PVR-500 Audio glitching

[Norm Dugas]

Norm Dugas wrote:
> Anthony R. Baker wrote:
>   
>>> Anthony R. Baker wrote:
>>>     
>>>       
>>>> I think this is a new round of an old problem. I have had the problem on
>>>> Mythdora 4 it stopped on day after an update but nothing in the change 
>>>> log
>>>> was intended for the PVR-500.It came back when I upgraded to Mythdora 5 
>>>> but
>>>> would go away after I  reset the audio channel as this page says
>>>> http://www.mythtv.org/wiki/index.php/Hauppauge_PVR-500#Audio_Instability
>>>> I set this as a cron job and everything was ok until about a month ago 
>>>> when
>>>>  it started again. Now the first time it does it I have to reboot to get 
>>>> rid
>>>>  of it.Three or four days later it comes back.
>>>>
>>>>
>>>>       
>>>>         
>>   
>>     
>>> This is a start.  I had seen that but noticed that the script segment
>>> talked about Direct TV so I thought this may be tied to capturing
>>> external audio, not the audio from cable.  I noticed that the problem
>>> went away for a few days after a reboot too.  I just don't want to be
>>> rebooting since this always messes up the firewire on my DCT which then
>>> requires some fussing to get working again.  I'll try to reset the audio
>>> like in the Wiki on both tuners once I notice the audio chirping again
>>> to see if this helps any.
>>>     
>>>       
>> I do use the external audio and still have the cron job running to reset the 
>> audio and this still happens.
>> The only thing that gets rid of it is to reboot. The only reason I mentioned 
>> the Wiki page is that the sound on my machine is the same and the PVR-500 
>> seems to be the worst of the cards for the "instability". My PVR-500 has 
>> made 2 or 3 really bad recordings where the video was fine but the audio 
>> drove me crazy. That's something I haven't heard from any 150,250 or 350 
>> cards. 
>>   
>>     
> I might look into reloading the IVTV modules the next time I have this 
> issue to see if this helps.
>
>   
To see if it was the PVR-500, I replaced it with my PVR-350.  No luck.  
Still observing the audio glitches.  I think I'll go one step further 
and eliminate MythTV by doing a cat /dev/video0 and capture a bunch of 
video that way to see if the issue occurs.  If so, for sure it's the 
firmware or the system itself.  If not, time to see what the Myth layer 
does.