How to Adjust Speaker Volume on a Display Port by Using the Mac’s Media Keys?

Sometimes, if you want to connect with Mac to an external display, then you might find that the Mac’s on-screen and keyboard volume controls are completely disabled. It is because the HDMI, Display Port, and Thunderbolt connections carry a permanent volume digital audio signal so that the external device will easily control the level of sound.

However, this might be irritating and frustrating for some users  if the volume controls on your external display are hidden in the bezel or covered in a fiddly on-screen menu. Luckily, it is possible for users to re-enable Mac’s native volume controls and then use it for adjusting the sound level which is coming out from your monitor’s speakers.

In this guide, we will provide you steps which guide you about how to adjust speaker volume on a display port by using Mac’s media keys, although you will need administrator advantages to follow it.

Step to Adjust Speaker Volume on a Display Port by Using Mac’s Media Keys

We suggest you follow the steps in the given series so that you can save your time and efforts. The steps are discussed below:

  1. Firstly, click to download the free SoundFlower Extension (v2.0b2) direct from Github.
  2. Then, double-click to the dmg file to install it.
  3. Next, hold down Ctrl key and then left-click on the SoundFlower.pkg file.
  4. Then, select the Open option from the contextual menu.
  5. A dialog box is appearing on your screen and asking you for your confirmation to open it, click on the Open option.
  6. If any dialog box appears on the screen saying that package can’t be opened, then click on the OK
  7. Alternatively, open the System Preferences ‘Security &Privacy panel.’
  8. In the General tab, click on the Open Anyway option.
  9. Let Soundflower installer continue their process, if needed then enter your password.
  10. Subsequently, download the SoundflowerBed utility (v2.0), now install the .dmg file and drag that flower icon into your applications folder.
  11. Launch the SoundflowerBed utility.
  12. Then, click on the SunflowerBed icon appears in the menubar,
  13. After that, select DisplayPort, Thunderbolt or DDMI as the output given in the (2ch) list.
  14. Finally, click on the Volume icon appears in the menu bar.
  15. Select Soundflower (2ch).

Note: you can also make this selection by directly going to the Sound System Preferences Panel.

Congratulations. After following the steps above you can adjust the volume of the speakers in your HDMI or DisplayPort monitor by using the native media controls features on your Mac.

Carl Smith is a self-professed security expert; he has been making the people aware of the security threats. His passion is to write about Cybersecurity, cryptography, malware, social engineering, internet and new media. He writes for Norton security products at

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