As a workaround select your mic and speaker devices and do not keep the device settings panel open for more than 1 minute
Tested on many long videoconferences
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On an HP Zbook studio G5 running Mint 19.1
Plantronics C3320 headset plugged into a USB port (on the laptop, not on the G3 docking station)
The teams_1.2.00.32451_amd64.deb package installs fine, and the test call works as expected.
However when calling a coworker, all he hears is very bad static that gets louder when I speak.
Same problem when input is set to the builtin microphone.
In sound preference:
Device set to Plantronic Blackwire 3220 Series Digital Stereo Duplex (IEC958)
Input connector set to "Digital Input (S/PDIF)
In the Teams Settings->Devices, speaker and microphone are set to Plantronic Blackwire 3220 Series Digital Stereo Duplex (IEC958)
As a workaround select your mic and speaker devices and do not keep the device settings panel open for more than 1 minute
Tested on many long videoconferences
I had this problem on daughters Ubuntu 18.04. I believe I originally got sound and mic for the very first attempt but as I went to tweak sound settings, I lost both and never got them back. I tried adding permissions, removing Teams settings (~/.config/Microsoft/Microsoft Teams) and sudo teams as well to no avail.
(I have Teams (+mic) running on my 18.04 just fine but it has a long history of upgrades (14.04->16.04->18.04).)
My PC's status led me to install 16.04 on daughters PC. I didn't touch any sound settings except raised volume. Mic and sound both perfect now on latest Teams.
For me 16.04 wouldn't be an option but my daughter will be just happy with 16.04.. ;)
Thank you Microsoft for porting Teams to Linux!
Regards, Timo
Adding the user to pulse & video groups does not help here.
BTW: skype_for_linux does not have this problem.
I gave up on this and now using https://github.com/IsmaelMartinez/teams-for-linux . Working well with my headset.