How to Fix Samsung DeX No Sound Audio Not Working Connected to a HDMI TV or Monitor Using S24 Ultra
16If you are not getting any sound to your HDMI TV or monitor when you are in Samsung DeX mode with your Samsung DeX compatible device and using a compatible USB-C dock or an original Samsung DeX Station. Then follow the instructions in this video guide and you will be able to switch your audio from playing out of the speakers on your Samsung device, to your TV or monitor via HDMI when in DeX mode.
For the example in this video I have used the Samsung Galaxy S24 Ultra and an original Samsung DeX Station. However, the instructions in this video guide will be the same and work for any Samsung DeX device or with any compatible USB-C dock.
As standard the audio from your Samsung DeX compatible device, such as a Samsung Galaxy Smartphone or Samsung Galaxy Tab, will automatically play its audio from its built in speakers when in DeX mode. You need to change the audio setting to send the audio to the HDMI output.
Here's what you do. Once in DeX mode go to "Settings". Select the "Samsung DeX" option. Scroll down and select the option that says "Set Default Audio Output" and switch it on. You will now have to exit and re-enter DeX mode and now your audio will work via your HDMI output to whatever device, TV, monitor etc. That is connected to the other end of your HDMI cable.
Checkout my Samsung Galaxy S24 Ultra Playlist - This playlist will be added to over time:
My Samsung Galaxy S24 Ultra Playlist: https://www.youtube.com/playlist?list=PLleKChtNUwZSdPWaMTILVZAkRzC5Fmy0z
Stuff used in this video:
Samsung Galaxy S24 Ultra https://geni.us/S24-Ultra
Original Samsung DeX Station https://geni.us/DeXStation
Arteck Bluetooth mouse and keyboard https://geni.us/FnAQp
Atomos Ninja V for recording the HDMI output from my Samsung DeX Station https://geni.us/Atomos-Ninja-V
The above components are also what I use for gaming on my Samsung S24 Ultra and other Samsung DeX compatible tablets and smartphones. The Ninja V is not a necessary component, I only use this to record my gameplay or any HDMI output from my Samsung DeX compatible devices. Plus I also use a Sony PS5 game controller within my Samsung Galaxy desktop gaming setup. PS5 DualSense constroller https://geni.us/PS5DualSenseController
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