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Mic not working in Logitech Brio 4k webcam.

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    [SOLVED] Mic not working in Logitech Brio 4k webcam.

    I'm running Kub. 22.04 on a tower computer with more than enough ram and adequate storage. I've installed the Subject webcam and downloaded guvcview to run it. The camera seems to work just fine; in fact, it worked "out of the box" immediately after installing guvcview. But I don't see any evidence that the mic is working. Logitech doesn't provide any support that I've found. Can someone help me get the mic working?
    Last edited by RLynwood; Oct 24, 2023, 08:12 AM.
  • Answer selected by Snowhog at Oct 24, 2023, 09:30 AM.

    Thank you for all this important help. I'll study it shortly because I need to know it. In the mean time, I've learned that my problem was that I had the webcam controls app up; that occupied the camera, leaving it unavailable for Zoom to use. Once it was closed, Zoom's camera utility saw & used my webcam. It works. Thanks again.
    Last edited by Snowhog; Oct 24, 2023, 09:30 AM.

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      #2
      Does it show in your audio widget and system settings?

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      You may gave to select the desired mic as the in-use device.
      A recording app may require you to select a specific device it its settings or similar.

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        #3
        The audio widget shows it at 60%, and the system settings has it at 100%. And the System Settings identifies the brand and model.

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          #4
          As a side comment, which may not be relevant here for this UVC cam, I do like to recommend users to check out the application Cameractrls.
          This does support UVC webcams, which already have solid Linux support, but also some other non-UVC cameras, plus support specifically for some Brio models.
          I found this last year when looking for useful controls for my Razer Kiyo, before I had to sell it. It doesn't offer audio controls as far as I recall (at least it doesn't on my current generic cheapo webcam)
          It may offer useful settings options for your specific webcam that Guvcview will not.

          Pretty easy to install manually, or via Discover. It has been updated regularly since I started using it.

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            #5
            Hmm. I installed Cameractrls, but the Application launcher doesn't show it, and clicking Launch in Discover's display for it yields nothing, i.e., nothing happens. Btw, you've given a preliminary or partial answered a related question: What's the best webcam operating software?

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              #6
              Originally posted by RLynwood View Post
              The audio widget shows it at 60%, and the system settings has it at 100%. And the System Settings identifies the brand and model.
              But is it selected? Note my three mics from the screenshots

              You may also need to select a specific device, depending on whatever application want to use audio input. if you previosly used a different audio input in the browser, you may need to select a different one:
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              What are you trying to use the mic/webcam with?

              Try a test with Guvcview, if you haven't already.
              Check the audio settings to select "pulseaudio", select the camera, and hit record video.
              The file will drop in your home dir.

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              There are websites for testing webcams that might be useful as well.
              Can you see any movement on the bar when your cam's mic is selected, and you have any noise or speech?

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                #7
                Originally posted by RLynwood View Post
                mm. I installed Cameractrls, but the Application launcher doesn't show it,
                Double hmmm
                I used to use regular git pulls when it was still quite new, and then moved to the flatpak sometime this past year, probably before there was a Snap version?

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                  #8
                  I don't know how to select the item. Also, I'm attending an online meeting that will continue for continue for another over three hours. I'll be back then.

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                    #9
                    I'm so sorry for this long delay in getting back to this thread. I've been continuously busy on other things, but now I'm back.
                    I don't understand a number of your screenshots. First, re. your 10-14, 11:37 a.m., post, I don't see those selection buttons on my Audio Volume. It just says "Microphone." I haven't been able to get a screenshot of it because, when I activate Spectacle, the Audo display disappears, and I don't know how to display it apart from clicking it in the system tray. And in the Audio--System Settimgs > Audio panel, there is no selection button. I'll stop here before continuing to another item.

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                      #10
                      Originally posted by RLynwood View Post
                      I haven't been able to get a screenshot of it because, when I activate Spectacle, the Audo display disappears,
                      Open the widget, then click the "pin" icon on the top-right corner, to keep it open.

                      Originally posted by RLynwood View Post
                      And in the Audio--System Settimgs > Audio panel, there is no selection button.
                      we will need a screenshot of that
                      If you only have one microphone attached, there won't be a button to select it, methinks.
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                      I will be slow to reply, Training involves me being on Teams, on camera all day
                      Last edited by claydoh; Oct 16, 2023, 12:19 PM.

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                        #11
                        Click image for larger version  Name:	Screenshot_.png Views:	0 Size:	30.2 KB ID:	674506 Thanks. Here's the Audio Volume


                        I have only the Brio Pro's mic attached, but here's its screenshot
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                        I really appreciate your help and look forward to your next post. Thanks.

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                          #12
                          So, if you tap the mic, or speak into it, does the blue volume level bar in the widget react?

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                          if so, it is working.
                          Your model seems well supported in Linux, generally speaking, and I have not seen any issues reported involving the microphone.
                          Next step is to try it out somewhere, like an audio recording application, or a zoom test.

                          In the chosen application, you *may* need to specifically select the mic form its own settings.

                          Another thing to try, is to switch to a different profile.
                          From System Settings, :
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                          Or from the widget itself:

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                          This probably won't do much, but who knows.
                          The "pro" option, may not work at all.

                          If you can't tell, I ordered a 4k webcam, next day, myself, for ....work. Yeah. Sure
                          It does have really good noise cancellation.
                          I didn't think I should swing the extra cost for a brio, and a well 'rated' cheap unit, well I am getting tired of being a cheepskate
                          Of course, the Brio is a little bit cheaper today than when I was looking at it before

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                            #13
                            "if you tap the mic, or speak into it, does the blue volume level bar in the widget react?" Yes to both. Apparently it's working. Imagine that!
                            "In the chosen application, you *may* need to specifically select the mic form its own settings." I had found that and made the changes.
                            "Another thing to try, is to switch to a different profile." Given above, what would be the reason to change the profile, and why did you choose 'Digital Stereo (IEC958) Input'?
                            I followed your choice. Before, it was--I can't make it display the option list, including the first one, the default, which was selected before I changed it. It was something like Default audio [something].
                            Yes, I plan to test it asap.
                            I bought a refurbished Brio, dropping the cost to about $89 on the advice I've read that in electronics, one's more likely to get a virtually perfect unit--because every detail of it has been checked and certified--than a new one, which may or not have been individually checked and certified since they do that with only sample batches. Actually, there is only one online use I have for it, a clinical treatment for which sound is critically important.

                            Claydoh, you've been a lifesaver. I still will appreciate your answering my remaining questions.
                            I'm headed to bed now but will be back in the morning. There are other things you've advised above that I still don't understand and want to.


                            Last edited by RLynwood; Oct 16, 2023, 07:29 PM.

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                              #14
                              Originally posted by RLynwood View Post
                              Given above, what would be the reason to change the profile, and why did you choose 'Digital Stereo (IEC958) Input'?
                              Because it was there, so I clicked it This is The Way.
                              It is worth trying, though mainly for multichannel sound cards and headphones or Bluetooth earbuds.Usually nothing changes, or the other options do not work.

                              I would have suggested trying out the simple webcam apps Kamoso and Cheese, but I have had iffy luck with those in general, and they may or may not record sound.

                              Kamoso seems to record audio, at least on my very current Plasma on my Fedora Chromebook's two cameras, so it may be a useful and simple tool for testing, though Zoom or whatever you need to use will be the important test.

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                                #15
                                I've just discovered that, now that I've selected the digital stereo output for the Recording Devices, the profile displays ONLY that and off. The original selection list, including the default, no longer gets displayed. That's in both the Audio Volume widget and the Audio--System Settings. Further, the volume control on my (main) speaker doesn't work. In the System Settings Audio panel, selecting the HDMI (Built-in Audio Stereo (HDMI) yields sound output through the speakers but with no volume control.

                                "Because it was there, so I clicked it This is The Way." I've broken more things doing that. I need to be more careful.

                                Why do you use KDE/Plasma in your Fedora rather than the default Gnome configuration? I ask because one of our computer professionals in our Linux group loves Fedora and its default Gnome DE. He prefers Fedora over any of the Debian based distros because of its corporate backing and large cadre of committed devs maintaining it. He's way smart enough to easily handle all of Plasma's configurations but loves the Fedora's configuration of Gnome's elegant simplicity and has no need to tweak things.

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