[mythtv-users] Sudden audio problem

Mike Carron jmcarron at starstream.net
Sat Mar 1 00:41:40 UTC 2014

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:
ALSA: Setting hardware audio buffer size to 128
ALSA: Error opening /proc/asound/card0/pcm3p/suub0/prealloc: Permission 
ALSA: Try to manually increase audio buffer with: echo 128 | sudo tee 
ALSA: Unable to sufficiently increase ALSA hardware buffer size - 
underruns are likely

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.

If someone is familiar with this situation and can offer suggestions 
that would be great.

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