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            <b><a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED - Stereo Profile is missing FAST TRACK ULTRA USB Audio card"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=92754#c8">Comment # 8</a>
              on <a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED - Stereo Profile is missing FAST TRACK ULTRA USB Audio card"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=92754">bug 92754</a>
              from <span class="vcard"><a class="email" href="mailto:superquad.vortex2@gmail.com" title="Raymond <superquad.vortex2@gmail.com>"> <span class="fn">Raymond</span></a>
</span></b>
        <pre>Usb-audio.conf does not defined its own surround21

<a href="http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/USB-Audio.conf;hb=HEAD">http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/USB-Audio.conf;hb=HEAD</a>

The surround21 use surround51 but your card does not support 6 channels

<a href="http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/pcm/surround21.conf;hb=HEAD">http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/pcm/surround21.conf;hb=HEAD</a>

This mean you have to define your card specific 2.1 in usb-audio.conf</pre>
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