Comment # 2 on bug 1182552 from Kim Frederiksen

Some further information about the issue. Using .57 kernel and MS Teams - all
you would need to do is set MS Teams to use the Plantronics C320 as Speaker and
Microphone. I always did this in MS Teams itself. Making and receiving calls
works just fine - as expected.

Upgrading to .60/63 kernel - what happens is that the headset speakers are
working but the microphone very often doesn't work. The solution is to unplug
the headset and plug it back in - while on the MS Teams call. After this, the
speaker and microphone is working via the headset during the rest of the
duration of the call.

Upon next call, you really never know if the microphone is working or not -
sometimes it does - sometimes not. I haven't been able to find any pattern -
sometimes, a new call immediately afterwards the microphone would not work -
other times it does. The more times goes by after the last call - the more
likely it seems that the microphone doesn't work.