Just bought LG 34WK95U-W and used the original LG Thunderbolt 3 supplied. So I bought the Apple Thunderbolt 3 pro cable but there is still no speaker sound when plugged in. Video input is good. Anyway to resolve this? Using MacBook Pro (13-inch, 2017, Four Thunderbolt 3 Ports), 3.3 GHz Dual-Core Intel Core i5, 16 GB 2133 MHz LPDDR3. Much thanks.
MacBook Pro 13″, macOS 10.15
Gtay123,
Thank you for these additional details, they are quite helpful.
We recommend that you check if the issue persists while on safe mode. Below is an article to help guide you through the process.
How to use safe mode on your Mac
Have you had the chance to check if the issue persists on a different user account? The article below can help if you do not have any other user account to test with.
Set up users, guests, and groups on Mac
Please keep us posted.
Take care!
Hi Gtay123,
Thank you for giving us the chance to assist you with your MacBook Pro. You can count on us to do our best to assist you or get you pointed in the right direction.
We understand that you are looking to play sound through your display’s speakers. The article below may help.
Change the sound output settings on Mac
Please keep us posted.
Take care!
Thanks for your reply. The problem isn't where the sound output setting. I have already put it in the LG Speakers setting but whenever my mac book pro sleeps and is turned on again the speakers don't work. I need to restart my computer and restart the monitor for sound to come thru thunderbolt3.. When I use HDMI everything works well without any issues.
LG 34WK95U-W no speaker sound using Thunderbolt 3 (Mac Book Pro 2017)
