Ubuntu 14.04 Installation w/ 6 GPU

[glambeth]

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:

[ 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!

[gordintoronto]

Is there a typo in your motherboard model? Google suggested GA-Z170X-UD5

However, when I look at the picture, it's not clear how one would install six video cards.

Have you considered trying a single video card?

Also, with the latest hardware, you should use the latest OS, not 14.04.

[QIII]

The fglrx driver cannot be used with 16.04, so multiple GPUs would be of limited use. 14.04 (but not 14.04.5) would be better in that regard.

But yes... three PCI-e slots make 6 cards a bit difficult.

3 R9 295x cards would get you 6 GPUS on three PCI-e slots, but might dim all the lights in the house.

[oldfred]

Review of several AMD cards with 16.04:
http://www.phoronix.com/scan.php?page=article&item=amdgpu-pro-rx460&num=1

But he often uses ppa to get even newer drivers & kernels.

[glambeth]

There is indeed a typo. That's the correct model. I just x1 -> x16 powered risers. Yup, works with a single video card. I haven't had problems in the past with 6 cards on ubuntu 14.04 while using AMD processors.