Handshake, GPU or cable issue

Hi everyone,

I am having an issue whereas I cannot get a signal between my TV and my computer after the TV is off. The computer runs 24/7 as it is also a media server. I suspect this is a handshake issue with HDMI but I am not sure how common that is these days. Last time I direct connect a computer to a TV via HDMI has been years. I’ve used a receiver typically.

I am using the most recent NVIDIA drivers, windows update and TV firmware.

Hardware as below:

Zotac RTX 3080
Sony x900h
Club 3D HDMI 2.1 Cable 5M/16ft
CAC-1375

May be related or unrelated, sometimes I get fuzzy pulsing audio for about 15 seconds. It remediates itself on its own.

Appreciate anyone sharing their thoughts.