ATMEGA328P-PU boatload

Hi !
I have exactly the same problem, and I managed to solve it very simply : by removing a capacitor from the quartz. Incomprehensible, but it works!
(however, the length of the wires adds capacity, and the value of the quartz capacities is very small (22pF), so this can maybe have consequences...and I saw that you used long cables to connect your quartz)
Hoping that it helped you !