Recently bought a Dell branded mellanox connectx-3 (CX322A PN: 19RNV) off ebay to put into my server but so far with my testing, I've not been able to get it to show up.
Since my server is presently in bits awaiting a rebuild, I tried it in my old X79 based machine. I took it's intel X710 card out and put the mellanox in it's place. It all boots up ok, although I noticed there was no option rom loaded. In windows 10, there is no sign of it or any unknown devices. I tried the mellanox tools and mst status reported there were no mst devices. I tried using centOS 7 and lspci didn't show any mellanox devices either.
Since I couldn't get anywhere with the X79 system, I moved it into my amd x399 system where again I took my other intel X710 card out and put the mellanox in. This time, it failed to post freezing at debug code 94, pci bus enumeration. I took the card back out and covered the SM bus pins and popped it back in and it still freezes at code 94.
I could try it in the old server board (amd 790FX) or the new one once I get a cooler bracket (intel Z390). Beyond that, I could take it to work and try it in the hp z800 workstation I have. I've done some reading and could try forcing the pcie slots to gen 2 although I don't see why gen 3 should be an issue. I also need to see about enabling "Above 4G decoding" in the bios if the option exists.
Beyond that, is there anything I have missed or should try?
Since my server is presently in bits awaiting a rebuild, I tried it in my old X79 based machine. I took it's intel X710 card out and put the mellanox in it's place. It all boots up ok, although I noticed there was no option rom loaded. In windows 10, there is no sign of it or any unknown devices. I tried the mellanox tools and mst status reported there were no mst devices. I tried using centOS 7 and lspci didn't show any mellanox devices either.
Since I couldn't get anywhere with the X79 system, I moved it into my amd x399 system where again I took my other intel X710 card out and put the mellanox in. This time, it failed to post freezing at debug code 94, pci bus enumeration. I took the card back out and covered the SM bus pins and popped it back in and it still freezes at code 94.
I could try it in the old server board (amd 790FX) or the new one once I get a cooler bracket (intel Z390). Beyond that, I could take it to work and try it in the hp z800 workstation I have. I've done some reading and could try forcing the pcie slots to gen 2 although I don't see why gen 3 should be an issue. I also need to see about enabling "Above 4G decoding" in the bios if the option exists.
Beyond that, is there anything I have missed or should try?
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