Here's one comment I deleted it, but a few people found it useful

Issue was:

https://web.archive.org/web/20230308190437/https:/old.reddit.com/r/OLED_Gaming/comments/wbwgwy/hdmi_21_issue_with_sony_a80j_and_rtx_3080_ti/

HDMI 2.1 issue with Sony A80J and RTX 3080 TI

Purchased a 55 inch Sony A80J from costco for 4k PC gaming with my new Zotac Trinity OC 3080 TI.

Problem is that none of the HDMI ports (both 2.0 and 2.1) worth with the PC. I do see an input, but it's heavily distorted with pink and green lines/sections and black jittery areas... can't use my mouse or my keyboard.

One possible solution I suggested was:

I experienced this issue on the X90J with the unresponsive green lines and frozen screen. It seemed to be triggered after watching dolby vision content from the Amazon app one day. What fixed it was switching to a hdmi signal where things were normal, which for me was setting hdmi to VRR (standard, dolby and enhanced had the green frozen screen) and then triggering HDR in windows. Like toggling on and off Windows HDR. After that things went back to normal.

I use a fiber HDMI 2.1 cable, so it seemed to be more a Sony software problem that required a random fix.