ubuntu only use 64k buffer
http://lists.freedesktop.org/archives/pulseaudio-
discuss/2014-October/021998.html
sample spec: s16le 8ch 44100Гц
channel map:
front-left,front-right,rear-left,rear-right,front-center,lfe,side-left,side-right
Объёмный 7.1
used by: 0
linked by: 0
configured latency: 0,00 ms; range is 0,50 .. 92,88 ms
https://wiki.ubuntu.com/PulseAudio/Log
check whether you get underrun/overrun in verbose pulseaudio log
this 92.88ms may be too small for 7.1 audio
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https://bugs.launchpad.net/bugs/1388436
Title:
ga-z97-d3h motherboard, no sound using line out
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