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Audio Problems between LG monitor and Mac Studio

I have a LG 49WL95C-W 49 Inch 32:9 UltraWide monitor connected to a Mac Studio via HDMI cable. Video works fine. There is no audio (yes, that monitor has build-in speakers). I've spent hours checking everything and researching online and cannot find any reason why this is happening. Any help? Thanks.

Posted on May 1, 2023 7:39 AM

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Posted on Jul 7, 2024 7:57 PM

Found the Solution: In the LG monitor menu go to: settings-general-input compatibility version- and switch from 2.1 (PC) to 2.1 (AV) and this will resolve the issue.


17 replies

May 1, 2023 2:58 PM in response to Randall3151

To ensure that your HDMI monitor cable is capable of handling the bandwidth needed to transmit data for 4K video, HDR images and HD audio, look for one like the EAD65185203, which was developed to meet the needs of today's high-speed world and designed to support even the most powerful of LG devices.


https://www.lg.com/us/computer-accessories/lg-ead65185203-hdmi-monitor-power-cable


https://www.lg.com/uk/microsites/audio-video/hdmi-sound


May 3, 2023 2:25 AM in response to Randall3151

Hmm..... I went over the LG's Owners Manual and really didn't see much of anything helpful.... In fact, the connections, controls and audio sections, all seemed vague and incomplete.


The Manual did say, that the LG can receive Audio over HDMI and USB-C. But because it lacked any real detail on Audio Input, I'm left wondering if there is an OnScreen way to switch the Audio Input between HDMI and USB-C Input connections.


The only other thing that might help, is to download the the Mac OS OnScreen Control and the Dual Controller from > https://www.lg.com/us/support/product/lg-49WL95C-W.AUS to see if either of those help.


Or optionally, see if you can patch the Audio thru a USB-C to USB-C connection, along with the display's downstream USB ports.

Audio Problems between LG monitor and Mac Studio

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