[pulseaudio-tickets] [Bug 107331] New: USB audo device shows an digital output (S/PDIF) device with PulseAudio 11.1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107331

            Bug ID: 107331
           Summary: USB audo device shows an digital output (S/PDIF)
                    device with PulseAudio 11.1
           Product: PulseAudio
           Version: unspecified
          Hardware: Other
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: alsa
          Assignee: pulseaudio-bugs at lists.freedesktop.org
          Reporter: tsunghanliu at gmail.com
        QA Contact: pulseaudio-bugs at lists.freedesktop.org
                CC: lennart at poettering.net

Created attachment 140777
  --> https://bugs.freedesktop.org/attachment.cgi?id=140777&action=edit
output of pacmd info on Ubuntu 18.04

I have a white-brand USB audio dongle which is a C-Media chip.
With Ubuntu 18.04 (it's using PulseAudio 11.1), the sound setting applet shows
"Headphones - Audio Adapter" and an additional audio device "Digital Output
(S/PDIF) - Audio Adapter".
But originally Ubuntu 16.04 (PulseAudio 8.0) only shows the headphone device.

I'm wondering if this is expected behavior for the new version of PulseAudio,
or there is something wrong within the dongle, PulseAudio, or Ubuntu?

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