[alsa-devel] [ISSUE] rtl8192ce appears to interfere with ALSA playback
LANGLOIS Olivier PIS -EXT
olivier.pis.langlois at transport.alstom.com
Thu Jan 23 17:50:56 CET 2014
> But you passed --buffer-size and --period-size options.
only to have the same params with hw:0,0 that I am giving with the dmix setup to reproduce the underruns. Otherwise the numbers below are what I have by letting aplay pick them for me by varying only the device.
I have done a lot of experiments with mildly complex alsa setup during the past holiday  to understand that ALSA may come up with different params for different setups but the choosen 16 periods value is puzzling me...
> > and I think that usually periods_num ~= buffer_time/period_time or
> > aplay -Dhw:0,0 sine_48000.wav
> > I have:
> > buffer_size : 24000
> > period_size : 6000
> > period_time : 125000
> > but with the default dmix setup: aplay -v sine_48000.wav:
> > buffer_size : 16384
> > period_size : 1024
> > period_time : 21333
> As already mentioned, dmix has the fixed setup for its slave PCM.
> See src/conf/pcm/dmix.conf.
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