Use the latest version of macOS
My MacBook is a 2013 Retina Macbook Pro, so it supports audio through HDMI; the HDMI cable is plugged directly into the HDMI port (no adapter) the monitor has speakers, and their volume is to 100% (Asus PA248Q) I've selected the HDMI audio output in the system settings; I've tried with a different HDMI. For example, if you have plugged your Mac into your TV via HDMI, and you are wondering why the speakers plugged into your Mac aren't getting the audio, it's because the sound is being routed to.
The first step is to make sure that you're using the latest version of macOS. Back up your important information and then update the software on your Mac.
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Check your sound settings
If you still can't hear sound from the internal speakers after updating your computer's software, check your sound settings.
First, disconnect any external audio devices from your computer. Also disconnect any cables from the USB, Thunderbolt, or 3.5mm audio ports.
Set Sound To Hdmi
Hdmi For Mac No Sound Recorder
No Sound Through Hdmi Cable
- From the Apple menu , choose System Preferences.
- Click Sound.
- Click the Output tab, then select the built-in speakers. If you don’t see built-in speakers as an option in the Output window, contact Apple Support.
- If the Output volume slider is set low, move the slider to the right and test again.
- If the Mute checkbox is selected, deselect it and test again.
- If you still don’t hear any sound, contact Apple Support.