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Heikki_Kaukonen's avatar
Heikki_Kaukonen
Copper Contributor
Jun 02, 2021

Audio volume turned very low when sharing content via HDMI in MTR

Any other had similar issue?
I'm using Lenovo ThinkSmart Hub, and when sharing content from my laptop via HDMI connected to MTR, volume level drops dramatically. No matter if I try increase volume from laptop or MTR or soundbar. Sound control panel communcation tab, "do nothing" has no effect.
Tested several Lenovo MTRs, all same. Have worked earlier fine. Teams Room client v 4.8.31.0

 

  • Heikki_Kaukonen 

    The fix is coming in next MTR SW version.
    You can use workaround to resolve issue: update Sound options - Communications - "Do Nothing"

    or set this regkey for skype user:
    [HKEY_CURRENT_USER\Software\Microsoft\Multimedia\Audio]
    "UserDuckingPreference"=dword:3



    • NathanBicknell's avatar
      NathanBicknell
      Copper Contributor

      Johan 

       

      I wonder if anyone has experienced this issue again on 20H2 running MTR: 4.10.10.0 ?

       

      I've since used Regedit to load in the hive from Skype user and see it has the Ducking reg DWORD already set to 3 so don't see this as a valid workaround for my client.

      • Durra23's avatar
        Durra23
        Copper Contributor

        NathanBicknell 

         

        Not me, since the update the problem was gone for us. We run a lot of 4.10.10.0 now with 20H2

  • Heikki_Kaukonen 

    The fix is coming in next MTR SW version.
    You can use workaround to resolve issue: update Sound options - Communications - "Do Nothing"

    or set this regkey for skype user:
    [HKEY_CURRENT_USER\Software\Microsoft\Multimedia\Audio]
    "UserDuckingPreference"=dword:3



    • saessli's avatar
      saessli
      Copper Contributor

      is there a release date for the next MTR SW Version?
      i am new to MTR, only a few Test Systems in our Company so far.
      But this is a killer to user experience.
      never had such a heavy bug with the Cisco Rooms Systems in 5 years.

       

      2021-06-11_Update:
      i tried the Setting with "do nothing" on 2 Poly G10-T Devices wich use Lenovo Thinksmart Hub as compute and GC8 as Touch and HDMI Ingest.
      on both systems there was no volume problem anymore when sharing HDMI.

      Did the Settings as admin and affected the Skype user also.

    • Durra23's avatar
      Durra23
      Copper Contributor
      How to access that setting from the Skype-user? The Skype user automatically runs the MTR-app with no possibility to access neither Regedit or the GUI-setting for Sound Options?
      • sebastianvogl's avatar
        sebastianvogl
        Copper Contributor
        You have to do it in the admin account, it's not possible with the skype user (at least as far as I know).
  • frankiversen's avatar
    frankiversen
    Copper Contributor

    Heikki_Kaukonen Same issue for our customers running same Teams app.

    But for customers running a lower windows version, f.ex a 1909 build, no issue. Must be a combination of the latest win2h version and newest Teams app Client.

    • frankiversen's avatar
      frankiversen
      Copper Contributor

      Talked to Logitech T3 support.

      Its a bug in Windows 20H2. You need to reimage down to 1909. 

      A wide spred issue.

      • Michael Tressler's avatar
        Michael Tressler
        Icon for Microsoft rankMicrosoft

        frankiversen For a simpler fix to this issue, login as admin, open Control Panel, open Sound, click on Communications, then select "Do nothing". Click Apply.

         

         

  • Durra23's avatar
    Durra23
    Copper Contributor

    I've got the same problem on multiple systems, both Yealink and Crestron. Any updates on how to fix or work around? Were going to rollback but 10 days was pasted...:-(

  • K_Alex_'s avatar
    K_Alex_
    Copper Contributor

    We have the same issue now with MTR 4.16.40 and Windows 10 IoT Enterprise 21H2

    We use Poly devices, with HP for compute but aforementioned GC8 for consoles, but Poly support told us we have to reach out to Microsoft about this.

    Registry UserDuckingPreference is already set to 3 for both Admin and Skype users, Communications - "Do Nothing" is checked separately for Admin user.

     

    The experience is pertinent to all our new MTRs (they are mostly the same configuration).

     

    Did anyone else experience the same issue with recent MTR versions? Any suggestions on how to fix?

     

    Is there possibly a way to downgrade to stable 4.10.10.0 or 4.9.12.0. Older threads suggest it is not possible.

     

    Also, I learned that there is a new, 4.16.134.0 (5/8/2023) - Manual update only MTR version. Would you advice to try it to solve our issue? And, if it turns out worse in some aspect, would we be able to revert, how?

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