Just picked up my 2019 EX and it looks like the LCD panel is bad. There is a green line down the center of the screen. Not a great start.
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Should be an easy fix. As said above, warranty issue, see the dealer.
Don't stress, all LCDs sometimes have defects. Some LCD TV manufacturers won't even cover dead pixels with the warranty unless 5+ pixels are dead. But kia should cover that issue no problem, that is obviously a factory defect.
Not sure what you mean by display drivers but the term usually means software to me (as in updated drivers). I'm not an expert, but I've seen a lot of cable issues, and this isn't one I've seen before. Possible of course.