/etc/asound.conf for dual mono

/etc/asound.conf fix for situation when only one channel from stereo is available (and another is broken).
TL;DR dual mono


pcm.!default{
  type plug
  slave.pcm dmix
  ttable{
    0.0 1
    1.0 1
    0.1 1
    1.1 1
    }
  }