Re: [OS] nvOC easy-to-use Linux Nvidia Mining

First off thanks for all the help thus far. But I am running in to a problem and would really appreciate it if someone could give me a helping hand.

So initial I had 5x 1070 2 connected via risers and 3 connect directly via the motherboard. I then bought some more risers so I could connect all of them via risers and someone suggested to do a fresh install whenever doing any hardware changes so I did that. However, now regardless of what configuration and the way I setup the gpus either the original with some via the motherboard and some via risers or all of them on risers it is only picking up 4 out of the 5 gpus. Any troubleshooting suggestions I tried look through to see if anyone else had this issue, but couldn't find anything that worked. Also I have tried multiple fresh installs on a few USB drives. Once again thanks in advance!

What motherboard are you using?

I am upgrading to a 6x PCIe mobo next week so I hope to not run into this issue?

I am currently using the Asus Prime Z270-A

1. Will the new cards work if you run 2 old ones with the 2 new ones?
2. Did you follow what is in the OP?

Quote

If you are using an ASUS PRIME Z270-A; ensure 'Above 4G Decoding' is enabled in the bios. Also ensure PTP aware OS: is set to 'Not PTP Aware' in the bios. Finally, ensure you 'Clear Secure Boot Keys' in the bios.

Also, I've read that PCIe setting needs to be set to Gen1. It sounds like it could be a simple BIOS issue.

Thanks! That was it guess it must have reset the changes in the bios when I did the fresh install or something.

When connecting some GPUs directly; you may need to manually set the pcie bandwidth to gen1.

If you are using risers you shouldn't need to do this.

The reason is that when you connect a GPU directly to a mobo it will usually default to using the max bandwidth for that port; either 16x / 8x / 4x. This hogs the bandwidth and can prevent the proper recognition of all cards.