I have been struggling with this issue for about 3 weeks now and could find nothing on forums and discussions online.
I have a GPU Rig with the following specifications:
- 6x PowerColor Red Devil RX580 Golden Sample GPU
- 6x Molex Powered Riser Boards with Molex to Sata Adapter Cables
- Biostar TB250-BTC Motherboard
- 4GB RAM
- Intel Celeron G3900 CPU
- Corsair AX1200i PSU
- Windows 10 64 bit
The issue I have is that Windows recognizes the GPUs, directly plugged into the MB or on the Risers, however, when I only use the risers, I get a black screen if more than 4 cards are installed.
I use Minergate to mine Ethereum, once the DAG file is created, I either get a hash rate of 0 H/s, or I get a blue screes saying DRIVER_IRQL_NOT_LESS_OR_EQUAL.
I have reinstalled Windows from another source to make sure it is not a Windows error. I re-downloaded the latest AMD Drivers and an older version and it still gives me the same issue
I have Minergate running perfectly on my home PC with an NVidia GTX970 (just mining to test and not for profit) with no such issues.
Could it perhaps be incompatibility issues? I do not really have the funds to buy more parts to swap and test, but because I have 6 cards and 6 risers I can test them all separately, which I have.
I also installed Ubuntu 16.04, which also picked up the GPU, but when I installed the latest drivers, it would not allow me to pass the login page, which I could do before the drivers were installed. I managed to get past the login page once after the installation, but I was stuck on a hash rate of 0 H/s
If anyone has experienced a similar problem, please assist where possible.
I previously flashed the bios with the same version it was on, still gave the same issues, and then updated to the latest version, still the same. There is however no posts of people using this bios version because it is so new.
I did notice one thing though, our Internet was down yesterday, so the Rig could not mine, so I did not get the Windows Blue Screen error, but as soon as the internet is back, the blue screen returns.
Did another BIOS update, blue screen is still there, so I believe the problem either lies with the motherboard or ALL the GPU's, as they all do the same. I think chances are bigger that the issue is with the MB because I have had issues with a few boards I have purchased.
We bought another MB yesterday, I do not get the Blue Screes anymore, but occasionally freezes a few times after each other. Still not getting any hashes