I have been unable to passthrough my GPU cards - AMD 6450, to any of the windows 8 VMs (install under EFI firmware) , under esxi 6.0u2. The VM simple unable to power up. If the card is removed, it boots normally. No issues with passthrough of USB 3.0 cards or HBAs such as the onboard storage module or a dell H310 card.
This AMD card is a known GPU that is passthrough capable.
Is there any bios settings, esxi settings or sequence that is needed to allow this to happen?
Any help appreciated