Ubuntu 20.10 unplug/plug USB headset: output device not detected without re-scanning with pacmd

Asked by Dmitry-a-durnev

On Ubuntu 20.10 I've noticed the problem with USB Headset(Sennheiser PC 8) unplug then plug:

after re-plugging the USB only input device(mic) is detected, output device is not seen by pulseaudio(not shown in ubuntu control panel sound for example).

Re-starting pulseaudio not helps. Only re-scanning with:

pacmd unload-module module-udev-detect && pacmd load-module module-udev-detect

solves the problem and PC 8 output device re-appears.

Is it a known bug or a feature?

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