AMD Vega 64 with Riser on Mining Rig - Blockchain Compute driver won't install

masop

Distinguished
Feb 14, 2006
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18,780
Good morning. I setup a mining rig in my basement in early September after building a wood mining rig frame ($25; Home Depot) using 1" square dowel rods from plans online. The hardware/software specs are below.

GIGABYTE GA-H110-D3A (rev. 1.0) LGA 1151 Intel H110 SATA 6Gb/s USB 3.1 ATX Intel Motherboard

Intel Pentium G4400 Skylake Dual-Core 3.3 GHz LGA 1151 54W BX80662G4400 Desktop Processor Intel HD Graphics 510

Patriot Viper Elite 8GB 288-Pin DDR4 SDRAM DDR4 2133 (PC4 17000) Desktop Memory Model PVE48G213C4GY

CORSAIR HX1200 CP-9020140-NA 1200W ATX12V v2.4 / EPS12V 2.92 80 PLUS PLATINUM Certified Full Modular Power Supply

Sapphire Radeon RX VEGA 64 8GB HBM2 HDMI / TRIPLE DP PCI-E Graphics Card 21275-02-20G (Quantity 2)

Logitech MK270 Wireless Keyboard (K270) and Mouse (M185) Combo, 2.4 GHz Dropout-Free Connection, Long Battery Life

MintCell 6-Pack PCIe 6-Pin 16x to 1x Powered Riser Adapter Card w/ 60cm USB 3.0 Extension Cable & 6-Pin PCI-E to SATA Power Cable - GPU Riser Adapter - Ethereum Mining ETH + 2 MintCell Cable Ties

Warmstor 2 Pack 2 Pin SW PC Desktop Power Cable on/off Push Button ATX Computer Switch Wire 45cm

Thermaltake Dual 24-Pin Mining Adapter Cable (AC-005-CNONAN-P1)

Microsoft Windows 10 Professional x64


NOTE: I do not have a second power supply yet, so I have no need for the Thermaltake cable at this time.


There are 2 unmodified Vega 64's installed. I have been unable to install the AMD Blockchain Compute driver (17.30.1029) because the installer can't detect my cards, yet the standard driver (Radeon Software Crimson ReLive Edition 17.10.1) detected the cards, installed and works fine.

I know others who are into mining and they did not run into this issue with their rigs. I'm unsure what is going on and have not found a single posting indexed by google regarding this issue. I find it hard to believe I'm the only person having this issue. Has anyone else run into this odd issue? I'm getting around 31.5MH/s per card using EthMiner, mining either Ethereum or UBIQ. I've read that it is possible to get 41MH/s using the Blockchain Compute driver.

My thoughts are that I might need to dismantle part of the rig in order to be able to install one of the cards in the main x16 slot since it is impossible with the motherboard secured to the frame and the frame nailed together. The bar that golds the back half of the cards up is blocking the ability to install cards in the motherboard slots, though risers are fine. If the driver installed, I would then need to remove the card from the slot and place it in the riser again. I would rather not take the frame apart or the motherboard. It's all very neatly put together. I'm hoping there is a better solution or work-around. Any useful advice or input would be greatly appreciated. Thanks.

-- MaSoP
 

AnonymousAndy

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Dec 18, 2014
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4,960
41MH/s is after heavy BIOS modification, not just installing the new drivers, before you worry yourself further :p

But anyway, have you tried running the amd driver uninstall utility? That thing works wonders, it even sifts through the regedit for you. Leave all the cards installed, run that utility, restart computer, and then try to reinstall the blockchain drivers with both cards installed.

http://support.amd.com/en-us/kb-articles/Pages/AMD-Clean-Uninstall-Utility.aspx

Good luck.
 

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