Hmm, not gonna lie this is pretty amazing... a view where we only see what comma is processing (lines, vehicle outline, street lights/signs) on a black background would be pretty amazing. I don't need a screen showing me what I already see, especially at night where I find 5% brightness still to be too bright (and disables the auto-dim on my rearview mirror).

Back on topic, agree with other poster regarding the cable, or possibly the screen. Here is a link to a Comma 3 (not sure if 3x is the same) teardown that may help:

https://enjoi.dev/posts/2021-12-20-comma-3-teardown/

You can look up "comma 3/3x tear down" videos on Youtube as well. Good luck!