Comment 18 for bug 1887610

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Hui Wang (hui.wang) wrote :

I planned to let you run "dmesg > dmesg.txt", then upload it to launchpad, but now no need to upload the dmesg.

Your issue has nothing to do with this SRU, this SRU will update the pulseaudio to 1:13.99.1-1ubuntu3.5 while the version on your machine is ubuntu3.2lp1869819.

And According to the log in the #15, there is no any problem:
The output is null or dummy because all output device are unavailable at that moment:
Default Sink: auto_null
  analog-output-lineout: Línea de salida (priority: 9000, latency offset: 0 usec, not available)
   Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo
  analog-output-headphones: Auriculares analógicos (priority: 9900, latency offset: 0 usec, not available)
   Properties:
    device.icon_name = "audio-headphones"
   Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo

After you plugging in the headphone or lineout, the output device will not be null or dummy.

For input device, it is usb input, there is no problem too.

So how do you expect the audio to work?