Ubuntu 14.04 Installation w/ 6 GPU

Hi, I'm attempting to install ubuntu 14.04 with 6gpus. I have been running into problems the past 3 days and am not sure what else to do, so I figured I would come to the forums for help. I have a Gigabyte GA-Z10X-UD5 motherboard, an intel core i7-6700K 8M Skylake processor, and 6x AMD RX 380. I have vt-d enabled in the bios as well as XHCI. On boot I've tried various kernel parameters (iommu=soft, nomodeset, pci=nomsi, intel_iommu=on, etc) but nothing has worked. After setting the kernel parameters I just get a black screen with a litany of error messages:

Code:

[ 1108.493365] pcieport 0000:00:03.0: AER: Corrected error received: id=0018
[ 1108.493378] pcieport 0000:00:03.0: PCIe Bus Error: severity=Corrected, type=Physical Layer, id=0018(Receiver ID)
[ 1108.493385] pcieport 0000:00:03.0: device [8086:d138] error status/mask=00000001/00001100
[ 1108.493391] pcieport 0000:00:03.0: [ 0] Receiver Error

that just continuously repeats. I've tried searching the forums but haven't had any luck yet, thanks!

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Ubuntu 14.04 Installation w/ 6 GPU