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If the sound on your Mac has stopped working, there are a number of possible explanations and solutions. The first thing to check is that the sound definitely is not working. Below we'll explain what to check.
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No sound on Mac? Check these things first
1. Check the volume
As simplistic as it may seem, the first thing to check is that the volume hasn’t been muted intentionally. Tap the volume up (F12) key to turn up the sound level.
Pro tip: If you hold down Option+Shift when you press F12 or F11 to increase or decrease the volume, it will move in smaller increments than the full step changes that occur when you use the keys on their own.
Dec 06, 2018 In this video I'm showing how to quickly fix your bluetooth audio quality on Mac OS X. Subscribe for more! ? About me - ️ Business Inquiries - [email protected]. Jan 19, 2016 Here’s how.: I paired a 2014 Macbook Air to a set of Audioengine’s aptX-capable Bluetooth speakers, hit play on a song in VLC and got a Hot Chip remix of New Order bouncing off the walls. I then held down the ‘option’ key, clicked the Bluetooth logo in OS X’s menu bar and moused over the connected device “Audioengine HD”. These days I have the iMac set to send all sound output only to a Bluetooth speaker. I’ve also used this method in an attempt to send audio to two Bluetooth speakers at the same time. It was able to connect to both but in practice it didn’t work – the audio dropped on both speakers constantly – I don’t know if it was a limitation of.
2. Is it an app problem?
It may be that there’s no sound on your Mac because it won’t play audio in a specific app. If, for example, you can’t hear sound from a video in Safari, make sure the audio isn’t muted, by clicking the volume control in the video. You should also check other sound sources, like iTunes and QuickTime movies to find out if they can play sound.
Tip: if you’re fed up with websites you visit automatically playing video with sound when you’re working, go to Safari>Preferences and click the Websites tab. Click Autoplay, and in the bottom right of the window, choose Stop Media with Sound.
3. Check for hardware issues
Next, check there’s nothing plugged into the headphone/line out port and look to see if there’s a red light on that port. If there is, it could be there’s a problem with the port, or something blocking it. Try blowing on it to clear dust, if that’s the case.
4. Are you running the latest version of macOS?
If there’s still no sound on your Mac, Apple’s advice is that the first thing you should do is make sure you’re running the latest version of macOS.
To check which version of macOS your Mac is running, click the Apple menu and then About this Mac. The window that opens will have the name of the version of macOS currently installed at the top. Now the latest version is macOS High Sierra. If you’re not running High Sierra, you should consider installing it by going to the App Store app, and clicking on it in the sidebar on the right hand side of the main window.
If you don’t want to install High Sierra, at least make sure you’re running the latest update to whichever version of the OS is installed. To check that, click Software Update in the About this Mac window. That will check for updates and let you know if there’s one available. If there is, install it.
Before you install either a new version of the OS or an update, backup your Mac using Time Machine, or whichever backup tool you normally use.
5. Run Maintenance scrips
If you’ve determined your Mac’s sound definitely isn’t working, consider running CleanMyMac X’s Maintenance scripts. These optimize the performance of your Mac by running a number of routines such as repairing disk permissions, verifying your startup disk, and rebuilding the launch services database.
Here's how to run Maintenance scrips:
Download CleanMyMac X here (it's free to download).
- Launch the app.
- Click Maintenance.
- Choose Run Maintenance Scripts and click Run.
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How to check your sound settings
If you’re running the latest version of macOS and your sound still isn’t working, the next step is to check your Sound settings.
- Click on the Apple menu and choose System Preferences.
- Click on the Sound pane.
- Select the Output tab and choose Internal Speakers. If that’s not available as an option, contact Apple Support.
- Check if the volume slider is low, if so slide it to the right and check the sound again.
- Make sure the Mute box isn’t checked.
If, when you check your sound settings, you see a USB device selected rather than Internal Sound, and you can’t change it, disconnect all USB devices from your Mac and try again.
Is there an app interfering with the sound?
Some applications, like screen recorders, install their own audio output drivers so that when you record the screen you can direct your Mac’s output to the recording app. It’s possible that if you’ve installed an app like that, its driver could be interfering with your Mac’s sound output.
- Go to System Preferences and choose Sound.
- Click on the Output tab.
- If there’s an output option that looks like a software app and it’s selected, that may be why the sound is not working on your Mac.
The best thing to do in that instance is to uninstall the app. You could just drag the app to the Trash, but that won’t uninstall it properly or remove all the files the app has placed on your Mac. To do that, you should use a dedicated uninstaller like CleanMyMac X.
CleanMyMac makes it very easy to completely uninstall any app so that it doesn’t leave any fragments or stray files behind. By using CleanMyMac, you can be sure you’ve deleted all the files associated with the app and that it hasn’t left anything behind. You can download CleanMyMac for free here.
Restart the sound controller
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If there are no software audio drivers interfering with your Mac’s sound output, nothing plugged into the headphone jack, USB, or Thunderbolt ports, and your sound still doesn’t work, the next step is to restart the sound controller. This requires launching Activity Monitor and quitting a process, but don’t worry, it’s not too scary!
- Go to Applications>Utilities and double-click on Activity Monitor to launch it.
- In the search bar, type 'coreaudiod’ to locate the Core Audio controller.
- Click on coreaudiod, then click ‘X’ in the tool bar to quit it.
- Coreaudiod will restart.
Mac volume not working and stuck on mute?
If the volume control is not working on your Mac, either using the keyboard or the slider in the menu bar or System Preferences, it could be ’stuck’ on mute. The most common occurrence of this problem is on pre-2015 Macs that had a digital audio output support in the headphone jack.
On those Macs, there was a sensor in the port that detected whether a headphone jack or a digital audio device was plugged in. The Mac would then change the output to headphones or digital output accordingly. However, sometimes the sensor failed to recognise when a digital audio device had been unplugged and so the audio output remained locked on digital output, with no way to change it. With no digital audio output connected, there is no way to change the volume or hear sound.
The solution in that case is to plug the cable back in to the socket and remove it again. Try it a few times, if necessary, to ‘trip’ the sensor and make the Mac recognise the digital audio device is no longer connected. If that doesn’t work, there could be some gunk blocking the socket. Try blowing on it to remove any dust. If that doesn’t work, buy a can of compressed air and, carefully, spray the socket to bow out the dust.
If that still doesn’t do the trick, buy a foam-tipped swab (don’t use a cotton bud as these leave tiny threads behind) and dip it in rubbing alcohol. Put the swab into the headphone jack and clean it, wiping away as much of the link as possible.
Bluetooth sound not working on Mac
Your Mac can play audio wirelessly via Bluetooth, so if you have Bluetooth speakers or headphones, you can use those to listen to music, or anything else on your Mac. Sometimes, however, they don’t work.
Make sure Bluetooth is switched on.
- Go to System Preferences and click the Bluetooth pane.
- If it says Bluetooth turned off, turn it on.
Make sure your headphones or speakers are connected.
- Look in the list of devices in the main window to see if your headphones or speakers are listed.
- If not, put them in pairing mode (you’ll need to refer to their instructions to find out how to do that) and when they appear, click Connect.
- If they are listed but not connected, make sure they’re switched on and Control-click on them in the main window and choose Connect.
Tip: If you check the box labelled Show Bluetooth in menu bar in Bluetooth preferences, you can connect from the menu bar item.
Once your headphones or speakers are connected, click on the volume control in the menu bar and choose them. If you don’t have the volume control displayed on the menu bar, go to System Preferences, choose Sound and then the Output tab and select the Bluetooth speaker or headphones. While you’re there, it’s a good idea to check the box labelled Show volume in menu bar — it’s in the Sound Effects tab.
To conclude, there are a number of reasons why the sound is not working on your Mac. If you follow the guide above and take it one step at a time, you should be able to fix the problem. If none of the steps above work for you, the next step is to contact Apple support and, if possible, make an appointment at the Genius Bar of an Apple Store. If that’s not possible, Apple will advise you on the best course of action to get your audio working again.
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Whether you’re using an external setup — either cabled or Bluetooth — or relying on internal speakers, there are a number of reasons why you might run into issues with sound not working on Mac.
There’s the obvious: discovering that you’ve accidentally muted your audio, haven’t updated your operating system in a long while, or a general build-up of detritus in your headphone port. A few fixes for these would look like a hard reset and often successfully address problems with sound not working right.
Then there are other problems, like finding your MacBook volume low or Bluetooth hiccups, that require a little more work. Sometimes, using a third-party app is the best way to get around here.
Luckily, you’ll find more information about all the tricks, in addition to some simple fixes for no sound on Mac, below.
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Determine The Causes Of Mac Sound Not Working
The first port of call if you find your Mac volume locked or non-functioning should always be the Sound Menu of the System Preferences area. Opening up System Preferences ➙ Sound ➙ Output will show you which output is selected, whether that’s your internal speakers or a third-party device.
One common cause of controlling volume not working on Mac, for example, is having your output set to an external device like a monitor or speakers that have their own volume controls.
You can also potentially use the Output menu to identify problems with external devices by switching between different output sources. If sound is working fine through your internal speakers and another Bluetooth device, but not through a pair of headphones when you connect them, that may indicate a problem with the headphones.
PRAM/NVRAM and Terminal fixes for MacBook sound
Not all Mac users will know much about PRAM (parameter random access memory) or NVRAM (non-volatile random access memory), which appear in PowerPC and Intel Macs respectively.
The headline here is that they control some settings relating to sound and volume, which can be useful if you find sound not working on Mac, your Mac volume locked, or some other audio issue.
The solution for this is to reset PRAM/NVRAM on your Mac. To do that:
- Turn off your Mac and disconnect any USB devices other than wired keyboards
- Turn it back on and hold down ⌘ + Option + P + R immediately after doing so
- Keep pressing those keys until your Mac restarts and you hear a second startup chime or, on Macs with a T2 Security Chip, until the Apple logo appears and disappears again
Certain settings relating to time, keyboard preferences, and critically (for the purposes of the issues above) volume will reset. Ideally, this will also fix any issues with volume not working on Mac.
Another common fix for Mac or MacBook sound not working is to use Terminal to reset Core Audio. Again, this is something where you don’t need to know a whole lot about the technical details other than it’s an API responsible for Mac audio. If you’re having issues with sound not working, or coming out distorted and glitchy, this reset might help:
- Open up Terminal and input the following command: killall coreaudiod
- Press Return, follow the prompts, and keep your fingers crossed that this will resolve your issue
If you’re not comfortable with using Terminal to address issues with your Mac sound not working, you can open up Activity Monitor and kill coreaudioad manually.
Bluetooth sound not working on Mac
As anyone who’s ever seen the Bluetooth symbol inexplicably struck through with a straight or jagged line can attest to, wireless audio technology isn’t quite perfect yet. Even pairing devices that have been successfully connected before can be a headache sometimes, resulting in either no sound on Mac or your Bluetooth device.
ToothFairy is an essential app as it allows you to add devices to your menu bar using different symbols so you can pair them with a single click. You can also set global hotkeys to connect and disconnect your devices.
Bluetooth is notoriously temperamental when it comes to sound not working properly, or at all, and ToothFairy offers a helpful shortcut for connecting devices quickly and easily.
No sound on Mac due to suspected malware
Although most issues that involve Mac sound not working can be resolved quickly and easily, there may be something more sinister going on below the surface.
Using an app like CleanMyMac X is useful for identifying malware or junk that may be clogging up your MacBook. Sound not working is just one potential issue of many that malware might cause. Finding any unwanted presence on your Mac with CleanMyMac X is as easy as navigating to Malware Removal and hitting Scan.
Although there’s no dedicated “Audio Junk” section in CleanMyMac X, the app looks deep into your MacBook with Optimization and Maintenance scans, and will surely find any problems that are serious enough to result in audio issues like sound not working on Mac.
Mac volume locked at a low level
When Mac users complain about volume not working on Mac, or that they find their MacBook volume low, what they’re really having issues with are the volume limitations imposed on Apple devices by manufacturer. Although these are designed to protect users (and their eardrums), they can leave users working in noisy environments or trying to listen to audio from their Mac at a distance frustrated.
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Install Boom 3D from Setapp, and you won’t have to care about volume problems anymore. The app automatically adjusts your sound environment.
An app like Boom 3D, in addition to offering virtual surround sound using normal speakers or headphones, lets you bypass the protocols that leave Mac volume locked and push the volume of your audio to higher levels.
Boom 3D also allows you to use customizable presets, adjust the default volume of individual apps, and enjoy a music player that grants access to over 20,000 radio stations. In other words, if you’ve ever found your MacBook volume low, it could just be your new best friend!
Mac sound not working is common but fixable!
Issues with limited or no sound on Mac are something that most Apple fans will encounter at one time or another but, as we’ve seen above, fixes are often pretty simple and rarely indicative of significant or costly issues. If all else fails, sound not working on Mac can often be resolved with a simple reset of your machine.
If the above tips don’t help then it’s worth looking at your hardware itself. A stuck key or a blown speaker might be responsible for your getting no sound on Mac too, and all the software tinkering in the world won’t fix that.
Although Apple does a lot right when it comes to audio, there are various apps out there that can fix audio issues and otherwise improve the performance of your Mac’s sound system.
Best of all, the apps mentioned above are available for a free 7-day trial for you from Setapp, a platform for the most useful Mac apps around (150 and counting). Now you can make sure your Mac sound won’t let you down.