[mythtv-users] PVR-350 audio quits while recording (Fedora)

[Greg Fruth]

Thanks, Gary, the suggestion to use dd=/dev/video0 is brilliant! I had forgotten about low-level
troubleshooting, since the card had been working properly for 5+ years.


You're absolutely right, the audio has the same problem when using dd=/dev/video0, so it's not a
MythTV problem. The dmesg errors look like:

[ 1911.814182] ivtv0: Audio has died (Encoder OK) : ivtv_serialized_open
[ 1911.919083] ivtv0: Decoder has died : ivtv_serialized_open
[ 1911.919090] ivtv0: Detected in ivtv_serialized_open that firmware had failed - Reloading
[ 1912.686864] ivtv0: Loaded v4l-cx2341x-enc.fw firmware (376836 bytes)
[ 1912.711139] ivtv0: Loaded v4l-cx2341x-dec.fw firmware (262144 bytes)
[ 1913.001059] ivtv0: Loaded v4l-cx2341x-init.mpg firmware (155648 bytes)
[ 1913.111809] ivtv0: Firmware restart okay

These messages appear to be associated with the time I restart dd=/dev/video, not with the time that
the audio dies. There's doesn't appear to be a message printed when the audio dies. Googling these
errors 


I'm getting these messages even after doing a "yum reinstall ivtv-firmware". I've looked through the
status reports printed by various ivtv and v4l2 utilities and don't see anything obviously wrong.
Is there any way to run a hardware diagnostic on the card?



>________________________________
>From: Gary Buhrmaster <gary.buhrmaster at gmail.com>
>To: Greg Fruth <gf20613 at yahoo.com>
>Sent: Wednesday, May 11, 2011 1:03 PM
>Subject: Re: [mythtv-users] PVR-350 audio quits while recording (Fedora)
>
>On Wed, May 11, 2011 at 19:34, Greg Fruth <gf20613 at yahoo.com> wrote:
>....
>> At this point all I can think of is that it's some weird problem in
>> introduced in MythTV in
>> April or a real hardware failure in the card or my mainboard.
>
>To rule out MythTV (or provide another data point to possibly
>point in that direction), just use dd from the raw video device to
>a (mpeg) file, capture sufficient data for your normal failure
>times (with sufficient additional time), and then take that
>raw mpeg file and play it in your favorite mpeg player....
>( dd if=/dev/video0 of=/tmp/test.mpg ).
>
>I have a hard time believing it is MythTV, since the transport
>stream that the PVR-350 generates is not modified by
>MythTV as far as I know, but stranger things have probably
>happened.......
>
>I still suspect a failing PVR-350.
>
>Gary
>
>
>
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