Comment 6 for bug 1447154

Default sink name: alsa_output.pci-0000_00_1b.0.iec958-stereo
Default source name: alsa_output.pci-0000_00_1b.0.iec958-stereo.monitor

it is strange yhat your hdmi SONY TV XV is available, line out and headphone are unplugged but iec958 spdif is your default sink

 active profile: <output:iec958-stereo>
 sinks:
  alsa_output.pci-0000_00_1b.0.iec958-stereo/#0: Built-in Audio Digital Stereo (IEC958)
 sources:
  alsa_output.pci-0000_00_1b.0.iec958-stereo.monitor/#0: Monitor of Built-in Audio Digital Stereo (IEC958)
 ports:
  analog-input-front-mic: Front Microphone (priority 8500, latency offset 0 usec, available: no)
   properties:
    device.icon_name = "audio-input-microphone"
  analog-input-rear-mic: Rear Microphone (priority 8200, latency offset 0 usec, available: no)
   properties:
    device.icon_name = "audio-input-microphone"
  analog-input-linein: Line In (priority 8100, latency offset 0 usec, available: no)
   properties:

  analog-output-lineout: Line Out (priority 9900, latency offset 0 usec, available: no)
   properties:

  analog-output-headphones: Headphones (priority 9000, latency offset 0 usec, available: no)
   properties:
    device.icon_name = "audio-headphones"
  iec958-stereo-output: Digital Output (S/PDIF) (priority 0, latency offset 0 usec, available: unknown)
   properties:

  hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
   properties:
    device.icon_name = "video-display"
  hdmi-output-1: HDMI / DisplayPort 2 (priority 5800, latency offset 0 usec, available: yes)
   properties:
    device.icon_name = "video-display"
    device.product.name = "SONY TV XV"