How To Play Sound Through External Monitor Displayport

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You think you’re all set. New monitor, crystal clear picture, ready for that immersive gaming or work session. Then you realize… silence. Zip. Nada. The audio is still chugging out of your laptop speakers, or worse, your ancient desktop speakers. Been there. Spent a solid afternoon once, convinced my brand new, fancy 32-inch panel was defective because it wouldn’t pipe sound through the DisplayPort cable. Turns out, it wasn’t the monitor, it was me. And probably a dozen other people who just gave up and bought a separate soundbar.

Honestly, the whole thing feels like a bit of a gotcha, doesn’t it? You’ve got this one cable doing everything, and then suddenly it’s only doing half the job. It’s frustrating when technology that’s supposed to make things simpler ends up making you scratch your head.

So, let’s cut through the noise and figure out how to play sound through external monitor DisplayPort. It’s not magic, and you probably don’t need to buy anything extra if your hardware is somewhat modern.

Seriously, this is less about troubleshooting and more about knowing where to look. It’s a setting, a tiny checkbox, that’s often overlooked. We’ve all been there, staring at a perfectly good piece of tech and wondering why it’s not cooperating.

Does Displayport Even Carry Audio? Yes, It Does.

This is the first hurdle for most people, and it’s a big one. You might be thinking, ‘Wait, DisplayPort is for video, right?’ That’s what I thought for years. I bought my first DisplayPort monitor assuming I’d still need a separate audio cable, like HDMI sometimes does depending on the device. But nope, DisplayPort is designed to carry both audio and video signals simultaneously. It’s a single-cable solution, just like USB-C can be for some setups. So, if your monitor has built-in speakers or a headphone jack, and you’re using a DisplayPort cable, the audio *should* be there. The question is, why isn’t it?

The bandwidth for audio over DisplayPort is surprisingly robust. It can handle multiple audio channels, high bitrates, and even advanced formats like Dolby Atmos if your monitor and source device support it. It’s not some afterthought; it’s part of the standard.

The Real Culprit: Your Sound Settings

Alright, let’s get down to brass tacks. The vast majority of the time, if you’re not getting sound through your external monitor via DisplayPort, it’s not a hardware failure. It’s your operating system’s audio output settings. Yep, that’s it. I wasted about six hours troubleshooting a setup that I swore was broken. I checked drivers, I updated firmware, I even considered shipping the monitor back. Turns out, my Windows sound settings had defaulted to my laptop speakers, completely ignoring the monitor as an audio output device. It was infuriating, like finding out you left your keys in the ignition after calling a locksmith.

Think of it like this: your computer is a radio station, and your monitor is just one of many potential speakers you can connect. You have to tell the radio station which speaker to broadcast to. If you don’t, it’ll just keep playing through whatever speaker it thinks is the default, which is usually the built-in one. And this isn’t just a Windows thing; macOS users run into the same issue. The principle is identical: the OS needs to be told where to send the sound. (See Also: How To Chagne Monitor To 144hz )

How to Change Your Audio Output on Windows

This is the most common fix, and it’s embarrassingly simple once you know it.

Right-click on the speaker icon in your system tray (usually in the bottom-right corner of your screen).
Select ‘Open Sound settings’ (or ‘Playback devices’ on older Windows versions).
Under the ‘Output’ section, you’ll see a dropdown menu labeled ‘Choose your output device’.
Click on this dropdown. You should see your monitor listed as an audio output device. It might be labeled with the monitor’s model name or simply ‘DisplayPort Audio’ or ‘High Definition Audio Device’.
Select your monitor’s audio output.

Once you select it, the sound should immediately switch over. Test it with a YouTube video or some music. If it works, congratulations! You just avoided buying a new cable or, worse, a whole new sound system.

How to Change Your Audio Output on Macos

Apple users, don’t feel left out. The process is similar.

Click the Apple menu in the top-left corner.
Select ‘System Settings’ (or ‘System Preferences’ on older macOS versions).
Navigate to ‘Sound’.
Click on the ‘Output’ tab.
You’ll see a list of available output devices. Find your external monitor in the list and click on it.

Just like on Windows, the audio should instantly reroute. It’s astonishing how many people, myself included, have stared blankly at their screens, convinced of a hardware failure, when all it took was a quick trip into the sound preferences.

Checking Your Monitor’s Capabilities

Not all monitors are created equal, and this is where some people get genuinely stuck. While DisplayPort *can* carry audio, not every monitor is equipped to *receive* and *output* that audio. Some budget monitors, especially those designed purely for visuals, might not have the internal audio processing hardware or speakers. It’s like buying a fancy sports car but forgetting to add the engine – it looks good, but it’s not going anywhere.

So, before you bang your head against the wall, do a quick check:

Look for built-in speakers: If your monitor has speakers, it’s highly likely it supports audio over DisplayPort.
Check the headphone jack: Even if it doesn’t have speakers, a headphone jack usually means the monitor can process and output audio. This is super useful if you want to plug in your own headphones or external speakers directly to the monitor.
Consult your monitor’s manual or manufacturer’s website: This is the definitive source. Search for your specific model number and look for audio specifications or ‘audio output’ features.

I remember buying a cheap 1080p monitor a few years back. It looked fine, the price was great, but it had no speakers and no headphone jack. I plugged it in via DisplayPort, expecting audio, and got… nothing. It took me a good twenty minutes of fiddling before I realized the monitor itself was just a display, devoid of any audio capabilities. A rookie mistake, sure, but a mistake I definitely made. (See Also: How To Choose Which Monitor With Extended Desktop )

The Displayport Cable Itself: Version Matters

This is less common for audio issues but worth mentioning. DisplayPort has gone through several revisions (1.0, 1.1, 1.2, 1.4, 2.0). While audio support has been part of the standard for a long time, extremely old or poorly manufactured cables *could* theoretically have issues. I’ve never personally encountered a DisplayPort cable that *didn’t* carry audio when it should have, but in the world of electronics, you can never say never. If you’re using a cable that came with a VCR from the 90s (okay, maybe not *that* old), or a suspiciously cheap, unbranded cable, it *might* be worth trying a different one.

For audio, you don’t need the absolute latest DisplayPort 2.0 cable. A good quality DisplayPort 1.2 or 1.4 cable is more than sufficient. The main differences in newer versions are increased bandwidth for higher resolutions and refresh rates, not necessarily audio capability. So, don’t go shelling out a hundred bucks for a cable unless you’re also chasing 8K at 240Hz.

The heft of a good cable often tells a story. Cheap ones feel flimsy, like they might snap if you look at them funny. A decent DisplayPort cable has a bit of weight to it, the connectors feel solid, and the shielding looks substantial. It’s a small detail, but sometimes it’s the only hint you get that you’re not dealing with junk.

When All Else Fails: Graphics Card Settings

This is the deep cut, the troubleshooting step you take when you’ve tried everything else. Your graphics card drivers and software often have their own audio control panels. For NVIDIA, it’s the NVIDIA Control Panel; for AMD, it’s the AMD Radeon Software. Sometimes, these panels can override or interfere with your Windows/macOS sound settings.

NVIDIA Example:

Open the NVIDIA Control Panel.
Navigate to ‘Display’ in the left-hand menu.
Click on ‘Configure Sound’.
Make sure the correct output device (your monitor) is enabled and set as the default.

AMD Example:

Open the AMD Radeon Software.
Go to the ‘Display’ tab.
Look for audio settings or options related to audio output over DisplayPort. Ensure it’s enabled and set correctly.

This step is rarely the primary issue for most users, but if you’ve updated drivers recently or made changes in these panels before, it’s worth a look. I once accidentally disabled audio output through DisplayPort in my NVIDIA settings while trying to tweak something else entirely, and spent a good hour wondering why my monitor suddenly went mute. (See Also: How To Know If Monitor Is Running At 144hz )

It’s easy to forget that your graphics card is often managing more than just pixels; it’s also handling the audio stream that’s sent down the DisplayPort cable. So, giving its control panel a once-over isn’t a bad idea if the basic OS settings aren’t cooperating.

A Quick Comparison: Displayport vs. HDMI for Audio

People often ask if HDMI is better for audio. Honestly, for most users, the difference is negligible. Both DisplayPort and HDMI are capable of carrying high-quality audio. The main distinction is that DisplayPort is generally more flexible with its multi-stream transport (MST) capabilities, allowing you to daisy-chain monitors. For raw audio quality and compatibility, they’re practically neck-and-neck for typical desktop use.

Feature	DisplayPort	HDMI	My Take
Audio Support	Yes, up to 8 channels	Yes, up to 32 channels	Both are excellent for standard audio needs.
Typical Use Case	Computers, monitors, high refresh rates	TVs, consoles, general multimedia	For PC gaming and productivity, DP often wins.
Max Resolution/Refresh Rate	Higher with newer standards (DP 2.0)	High, but DP often pushes the bleeding edge	DP tends to be the enthusiast choice for PC.
Cable Locking Mechanism	Often has a physical lock	Usually friction-fit	DP’s lock is nice for desk setups, less chance of accidental unplugging.

My Monitor Doesn’t Have Built-in Speakers, Can I Still Get Sound Through Displayport?

Yes, absolutely. Many monitors lack integrated speakers but have a headphone jack or audio-out port. If your monitor has one of these, it’s designed to receive audio over DisplayPort and output it through that jack. You can then plug in your own headphones or external speakers to the monitor.

Do I Need a Special Displayport Cable for Audio?

No, not usually. Any standard DisplayPort cable that supports the version of DisplayPort your devices use should carry audio. You don’t need an “audio-specific” DisplayPort cable. Just ensure it’s a reputable brand, especially if you’re running it through walls or over long distances.

Why Does My Computer Still Show the Monitor as an Audio Device Even When It’s Not Making Sound?

This is normal. Your operating system detects the monitor’s capability to receive audio over DisplayPort. It will continue to list it as an available output device even if there’s no actual sound being produced, which is usually a sign of a configuration issue rather than a hardware problem.

Can I Use Displayport for Audio on a Laptop?

Yes, provided your laptop’s DisplayPort output supports audio (which most modern ones do) and your external monitor can receive and process audio via DisplayPort. The setup steps are the same as described for desktop computers: change the audio output settings in your OS.

Conclusion

So there you have it. The mystery of how to play sound through external monitor DisplayPort is usually solved by a simple trip into your sound settings. I’ve seen people get so bogged down in driver updates and cable specs that they completely miss the obvious software toggle. It’s the digital equivalent of looking for a lost item in the most complicated place when it’s right in front of you.

If you’ve gone through these steps and are still deaf to your monitor’s audio potential, then and only then should you start suspecting a faulty cable or a monitor that genuinely lacks audio support. But honestly, I’d bet my collection of dusty old tech manuals that it’s a setting somewhere. It’s the most common hiccup, and thankfully, the easiest to fix.

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Don’t let a silent monitor ruin your setup. A quick check of your audio output device is the first, and often last, step you need to take. Give it a go, and enjoy the sound!