Thank you for reaching out, do you have anynet+ enabled? You can enable it by pressing the Home button your TV remote, and then navigate to and select Settings > General. Select External Device Manager, and then select Anynet+ (HDMI-CEC) to turn it on. Next, connect an external device using an HDMI cable, and then turn on the device - it will automatically connect to the TV. After the connection is established, you can access the connected device's menu using your TV remote and control the device.
Thanks for getting back to me.
When connect the soundbar thru HDMI it shows up in the sound output settings by name now. But the TV autovolume setting is still grayed out. I verified Anynet+ is enabled. The volume control works just fine it's the autovolume setting I'm looking to conttrol, so it's easier to hear at night without being too loud in movies and that sort of thing.
It doesn't allow me to use the Auto-Volume setting when connected by BlueTooth or by Optical connection either, only when the Sound Output is TV Speaker.
Have you tried connecting through HDMI(ARC)?