<html><head><title>Re: [mythtv-users] Sudden audio problem</title>
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<span style=" font-family:'Courier New'; font-size: 9pt;">Hoi Mike,<br>
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Saturday, March 1, 2014, 5:48:46 PM, you wrote:<br>
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<td width=1013><span style=" font-family:'times new roman'; font-size: 11pt;">Ok, I tried it this morning after everything had been off for at least 12 hours, the sound came on properly and lasted about 30 minutes. When it died, the settings still pointed to ALSA:hdmi card 0 and a speaker test was successful. I exited the FE and checked alsamixer which showed the correct settings and was not muted. I restarted the FE and the sound was correct and lasted for about 20 minutes. When it went out I checked the settings, still ALSA:HDMI card 0, speaker test was still successful, and after exiting the FE, alsamixer showed the sound was not muted. This time when I restarted the FE, there was no sound.<br>
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I'm beginning to suspect a hardware issue, especially since an identical AD-03 in a different room but connecting to the same BE has delivered proper sound with no problems.<br>
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mike<br>
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<span style=" font-family:'courier new'; font-size: 9pt;">On 2/28/2014 10:38 PM, Jean-Yves Avenard wrote:<br>
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On Saturday, March 1, 2014, Mike Carron <</span></span><a style=" font-family:'courier new'; font-size: 9pt;" href="mailto:jmcarron@starstream.net">jmcarron@starstream.net</a><span style=" font-family:'courier new'; font-size: 9pt;">> wrote:<br>
<span style=" font-family:'times new roman'; font-size: 11pt;">After several months of normal operation, one FE (a Zotac ZBOX AD-03 with Mythbuntu 12.04 0.25/fixes) suddenly dropped sound completely while watching live tv. Checking the log produced 4 errors together at the time when the sound was dropped:<br>
ALSA: Setting hardware audio buffer size to 128<br>
ALSA: Error opening /proc/asound/card0/pcm3p/suub0/prealloc: Permission denied.<br>
ALSA: Try to manually increase audio buffer with: echo 128 | sudo tee /proc/asound/card0/pcm3p/sub0/prealloc<br>
ALSA: Unable to sufficiently increase ALSA hardware buffer size - underruns are likely<br>
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I can restart the FE and the same scenario will repeat, some amount of time with completely normal sound followed by silence. Those 4 items will be in the log at the exact time the sound fails.<br>
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If someone is familiar with this situation and can offer suggestions that would be great.<br>
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<span style=" font-family:'courier new'; font-size: 9pt;">Those messages are harmless. You can ignore them. <br>
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Make sure the audio device didn't change in the settings, and that it's not muted using the alsa-mixer utility<br>
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<span style=" font-family:'Courier New'; font-size: 9pt;">It can also be an issue on your backend. Check if old recordings, you know to contain sound, produce sound.<br>
Also you can check if the files that failed to produce sound, do contain sound by playing them in another context.<br>
If not the problem is probably either with your hardware (the encoder of your card) or with your encoding profile<br>
or the encoding software.<br>
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Tot mails,<br>
Hika </span><a style=" font-family:'courier new'; font-size: 9pt;" href="mailto:hikavdh@gmail.com">mailto:hikavdh@gmail.com</a><br>
<br>
<span style=" font-family:'Courier New'; font-size: 9pt;">"Zonder hoop kun je niet leven<br>
Zonder leven is er geen hoop<br>
Het eeuwige dilemma<br>
Zeker als je hoop moet vernietigen om te kunnen overleven!"<br>
<br>
De lerende Mens<br>
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