smallish remark and cross check: With a different mainboard, Asus A88X-PRO with a newer cpu/apu generation: CPU0: AMD A10-7890K Radeon R7, 12 Compute Cores 4C+8G (family: 0x15, model: 0x38, stepping: 0x1) using the displayport and hdmi connectors on the motherboard and monitor and cables both work fine and produce correct pixels and funcionality.