[mythtv-users] Audio cd plays with hickups in MythMusic

[Michael T. Dean]

On 07/30/2009 05:26 AM, Herman Gerritsen wrote:
> 2009-07-30 11:20:16.054 ALSA, Warning: mmap not available, attempting
> to fall back to slow writes.
>   

http://www.alsa-project.org/~jfulmer/alsa-faq.html
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3.19 The documentation for Quake (1)(2)(3 Test) says that I must have a
soundcard and driver that supports mmap. Does ALSA support mmap?

ALSA's OSS emulation supports mmap() when possible. Some older cards,
do not support mmap, due to hardware limitations.

Two notes from Jaroslav:

"Notes:

1) mmap() for the GUS synthesizer playback is ugly (GUS Classic)
2) mmap() for PCI chips from Cirrus Logic (snd-card-cs461x) is not
implemented"
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Are you really using one of these extremely old cards?  If so, I 
completely understand how playback issues could occur (in audio, which 
can even cause issues in video), and you may want to get a better sound 
card.  If not, your configuration is broken--either the ALSA 
configuration or the MythTV (or MythMusic) audio configuration.

My guess is that you have PulseAudio enabled.  If so, that's almost 
definitely the problem.

Mike