> > I've been looking at those lines. Do you think it should be done in USB-Audio, or should it be added into separate config file specific for this sound card? http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/pcm/surround21.conf;hb=HEAD The route of surround21 is hardcoded to use surround51 , this mean your ttable are used by those usb audio support 6 channels, those usb audio which only support 8 channels need to define their own 21 route as both surround51 and surround71 of usb audio use route plugin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20151128/d1683415/attachment.html>
