My front navigation screen rolls like an old tube tv with horizontal controls.

What is your question?

I have sent the computer (located under the passenger seat) in for repairs and it comes back with a clean bill of health. Then I tried replacing the front display screen but the problem persists. Funny thing is, the backseat screen works just fine, no rolling and all functions work. Actually the front screen controls work too, you just have to catch them as they roll by! Haven't found anyone with a similar problem??

What makes this problem better or worse?

It seems to get worse the longer it is left on

How long has your 2006 Lexus GX470 had this problem?

Vehicle had the problem when i bought it 2 mos ago