I feel a bit sheepish having to ask this, but has anyone successfully gotten their deck to display on a LG TV (C2 to be precise)? I have the official dock and that works for other devices like my laptop or surface pro but no dice with the deck itself.
I’ve tried various things like resetting the device, resetting the dock, changing the order of connection them all up but not managed to get anything to show it. I also checked that the HDMI cable I’m using works for up to 8k. A bit frustrating as one of the reasons I got the device was to be the living room PC/link to my gaming PC!
I had this same issue with an LG OLED monitor. I’m not 100% sure this was the solution as it was long ago, but you need to NOT have the USB-C power cable connected to the dock, just the HDMI. Connect the Deck to the dock and you’ll get image. After this you can plug the dock back to the power cable.
Annecdotaly, a recent patch had notes that implied it fixes this issue. I got so tired of the dock being unreliable that I haven’t confirmed it, though.
I’ve had this same issue with a smart TV and you’re suggestion was what fixed it