I think my issue is different. I just got the PC setup yesterday and I have a Zotac GeForce RTX 2080 card with a 43" 4k TV as monitor via hdmi. There is only one hdmi output on the 2080... so I ran the motherboard graphics hdmi to the TV, and the GPU hdmi to the Odyssey... which looks like it works, but doesn't. I ran another game that didn't work in the same blank-space in the headset manner, but at least it told me that I have to use the same graphics card to feed both the HMD and the main monitor. So I must get a DP to hdmi 4k cable to fix it. Or so I think now.