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[Bug 1286021] Re: 2.1 surround support (userspace)


when subwoofer is connected to mono pin complex

the following patch force these kind of configuration to use 4 channel
mode instead of copy front mode


do it need fix to ensure multi channels was used when all of these
speakers pin complexes are stereo (e.g. those lapptop with internal 5.1
spekers) and use copy front mode when of the speaker pin complex is mono

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  2.1 surround support (userspace)

Status in “alsa-lib” package in Ubuntu:
  Fix Committed
Status in “pulseaudio” package in Ubuntu:
  In Progress

Bug description:
  2.1 surround should work as seamlessly as other surround options, such
  as 4.0, 5.1 and 7.1 work today.

  Alsa-lib and pulseaudio patches for 14.04 can be tested here:


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