Still no solution. The second cable arrived and it also did not work. Links to the two cables I used are below in case you want to rule them out of your own searches. (I am using a Dell Visor with a Radeon RX580 - 8GB).
https://www.amazon.com/gp/product/B00K7V9GKM/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B0179MXKU8/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1