[mythtv-users] Audio cd plays with hickups in MythMusic
Michael T. Dean
mtdean at thirdcontact.com
Thu Jul 30 15:08:37 UTC 2009
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.
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:
1) mmap() for the GUS synthesizer playback is ugly (GUS Classic)
2) mmap() for PCI chips from Cirrus Logic (snd-card-cs461x) is not
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.
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