[mythtv] 'WriteAudio: buffer underrun' during playback caused bythe scheduler

Michael T. Dean mtdean at thirdcontact.com
Thu Sep 14 18:17:05 UTC 2006

On 09/14/06 02:16, Lueddich at gmx.de wrote:

>using 'ALSA:default' I don't get 5.1 to work. 2 channel mode is OK, but with a 6 channel stream, I am only able to listen to fl and fr, the other speakers are dead. But the working speakers do really play only the fl and fr, so there is no speech for example... Using '/dev/dsp', I have the problems with 2 and 6 channel mode...
>If I should test anything with a special file and post some logs, just say so!! ;)
Get rid of (rename) your ~/.asoundrc and your /etc/asound.conf before 
testing ALSA:default.  When testing with a user- or system-specific 
config file, you may not be testing what you think you're testing.  It 
really sounds like you're using the 2-channel-only-capable dmix 
plugin.   Of course, if you're using ALSA 1.0.9 or above, you'll be 
using dmix even with the default default (yes, I meant to type that 
twice) device if you have a software soundcard (like an NFORCE or ...).

So, please try testing with no ALSA config files (rename those specified 
above), and reply back with the version of ALSA and the sound card 
you're using.


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