Solus 4.1 proper stops there on boot?
That's a strange one. I typed in your last warning and approx 2-3 stackexchange articles say that has to do with 2 active ethernet ports detected. but that's probably a red herring, too.
If this is what you get after you boot a live iso, install Solus to your desired disk, pull .iso out, and boot solus for the first time...then I don't have an answer.
Maybe someone has seen this before?
Maybe you aren't letting it hang long enough?