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  1. Qt
  2. QTBUG-126732

PulseAudio - No output when using multichannel sound card

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    • Icon: Bug Bug
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    • None
    • 6.7.0
    • Multimedia
    • Linux/X11

      Steps to reproduce:

      1. Connect an external multichannel sound card (for example the Focusrite Scarlett 18i20 with 10 output channels) to the PC
      2. Play an audio file or a video with an audio track with QMediaPlayer

      Expected:

      • Audio plays normally

      Actual:

      •  Audio is essentially inaudible, metering of output shows low signal.

      Notes:

      • PulseAudio reports the sink channel map to include front/rear/side pairs + front-center + LFE + 2 AUX channels.
      • QPulseAudioInternal::channelConfigFromMap returns 7.1 surround channel config for device
      • The PulseAudio default channel map is set to only front left/right pair.

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            timblechmann tim blechmann
            mikko.hallamaa Mikko Hallamaa
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              Created:
              Updated:
              Resolved:

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