Microphone does not work when receiving calls

Joe Yasi 1 Reputation point
2020-03-20T22:27:17.653+00:00

I'm running Kubuntu 19.10, and I've tried teams 1.3.00.958 and 1.3.00.5153. I'm using an old Logitech B500 webcam for video and mic. Teams is configured to use my Built-in Audio Analog Surround 5.1 sound card for speakers and the Webcam B500 Mono for microphone. These are the only devices available for selection. If I place a call or join a meeting, my microphone works. If I receive a call, they only hear noise. Hanging up and having me call them back works. Why does the mic only not work when receiving calls?

Skype for Business Linux
Skype for Business Linux
Skype for Business: A Microsoft communications service that provides communications capabilities across presence, instant messaging, audio/video calling, and an online meeting experience that includes audio, video, and web conferencing.Linux: A family of open-source Unix-like operating systems.
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  1. JimmyYang-MSFT 49,031 Reputation points Microsoft Vendor
    2020-03-23T09:43:07.987+00:00

    Hi JoeYasi-7272!
    Does anyone else have the same issue?
    Does this issue persist if you restart Teams for Linux client?
    It looks like this would require some further investigation. We recommend you open a support request from https://admin.microsoft.com so that our support team can troubleshoot and assist you in resolving this issue.

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  2. Joe Yasi 1 Reputation point
    2020-03-23T16:57:55.467+00:00

    I don't know if anyone else has experienced the same issue, but I've asked the other Linux users in my organization, and I'll report back when I hear.

    This issue does persist after restarting the Teams for Linux client. I will open a support request. Thanks.

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  3. Joe Yasi 1 Reputation point
    2020-03-31T20:13:45.56+00:00

    When I try to go to https://admin.microsoft.com, it just redirects me to office.com. I don't see a way to file a support ticket with Microsoft from that.

    I am the only Linux user from the few I talked to experience this issue, but I believe I figured out what is happening. If I use a bluetooth headset instead of my webcam for the microphone, I do not have this problem. The issue is that the microphone in my webcam doesn't work unless the video is turned on. If I take a call without video, it also doesn't work.

    Is there a difference in initialization order of video and microphone for Teams when receiving vs placing a call? If so, that could explain what I'm seeing.

    Another issue: Teams holds the microphone open after the call ends. When using a noise canceling bluetooth headset, this disrupts noise cancellation since the microphones are used for that purpose. Restarting teams after the call releases that resource hold, but Teams should free the microphone when the call or meeting is over.

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