[mythtv-users] ALSA, intel8x0 and WriteAudio: buffer underrun

[Al McIntosh]

Michael T. Dean wrote:

> Al McIntosh wrote:
>
>> I have an AMD Sempron 2800+, MSI nForce4 K8N Neo3 with onboard nVidia 
>> Corporation CK804 AC'97 Audio Controller. I have been experiencing 
>> problems with mythfronted freezing during playback of recorded shows. 
>> I have to kill it but it becames defunct.
>>
>> I am using alsa 1.0.10 and myth 0.18.1
>>
>> I believe it's the sound card because of the following mythfrontend 
>> output appears when the crash occurs:
>>
>> 006-01-07 14:27:19.240 prebuffering pause
>
>
> Sure it's not an I/O issue?  Perhaps the buffer underrun on the audio 
> was due to the lack of data caused by prebuffering pauses.  Were you 
> playing HDTV?  Problem with your hard drives or network (if using a 
> network filesystem or Myth streaming)?
>
> Mike
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I wonder if this is also related?

During recordings, my mythbackend becomes unusable everynow and then also.

In my mythbackend logs during recordings I have seen:
 
2006-01-07 01:15:38.629 IOBOUND - blocking in ThreadedFileWriter::Write()

Then in /var/log/messages I get
ivtv0 warning: ENC Stream 0 OVERFLOW #0: Stealing a Buffer, 512 
currently allocated

My recording is hosed at this point. I have reboot the machine, 
everything becomes unresponsive.