Sometimes though, what you regard as a problem is not even a real problem. The bad news is, you might not always know what causes them or if they could exacerbate the problem into something which substantially harms other parts of your Mac. When it comes to audio problems, the goods news is, they are mostly software-related, meaning you can fix them without seeking a professional to assist you. But if you're going, to be honest with yourself, then you know very well that your Mac's efficiency can be reduced by booting issues, overheating, and audio glitches. You can praise your Mac for being a machine that is rarely ever dogged by serious technical problems, and no one will fault you for that. Part 4: Tips Against Mac Sound Not Working.Part 3: Further Solutions to Mac Sound Not Working.Part 2: Mac No Sound? Simple Fixes First.Part 1: Mac Has No Sound? Common Issues.Switching between devices in the master controller will show you and allow you to control each device's volume, it's only the DP and HDMI ones will be greyed out. But then you can modify the speaker's volume. If some other app that doesn't have its own device selection is making sound through the monitor, it will also switch to the USB speaker. In order to control that volume you have to first change the master Audio output to USB Speaker. Say you have your master audio output device set to "Monitor 2" (a DP monitor) and you have an app with it's own selectable audio output set to "USB Speaker", which allows volume control from the Mac's UI. Here's the complication and how you do it, that works today with Catalina and I think also worked with later versions of High Sierra. Perhaps this was fixed in the last two years or perhaps I was wrong when I wrote the question and comments. This is contrary to what I said in this question and contrary to my comments to the Accepted Answer. If an App allows you to select its output device, and you select one that allows volume control, you CAN control it even when a DP or HDMI monitor is connected. Proxy Audio Device seems to work pretty well so far. Volume control works fine on Windows so I assume either there's some quirk in MonitorControl, or Windows is actually not using CEC. MonitorControl did not work for me for some reason - I'm using a TESmart KVM switch and a Dell monitor. So my suggestion is try MonitorControl, if that does not work use Proxy Audio Device. SoundFlower is very old (2014) and I did manage to get it to work, but it stops working after about an hour.īlackHole is similar to SoundFlower but unfortunately does not support outputting to another audio device so you can't use it for this purpose. I included SoundFlower and BlackHole for completeness but the DO NOT WORK. This was specifically created to solve this problem. Proxy Audio Device - creates a virtual device like SoundFlower.
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