When posting, even in a comment, mentioning something that works, PLEASE list all the specs. CPU, GPU, Panel type/brand/resolution used, ports and cables used to connect, OS and software that's relevant, hacks you have done etc.
I have struggled to search for specific things I once recall seeing posted, and have seen so many posts where people say something like "this Thinkpad from work is fine" and then nothing else and no response to inquiry. It's super important so people can quickly see if this is something they have tried or is new and worth exploring. Something as simple as a connection used (HDMI vs VGA etc) could be the difference and a clue. If this is going to get solved it's going to be because something clicks somewhere and we can reproduce it. We need data and consistency to even hope for that. Maybe we can even come up with some template to fill out like some support sites have for posting with fields. Not sure if people would use it or not.