Topic: Question to anyone Running Asrock H81 Pro BTC V2 boards (Read 608 times)

Hi, im exactly same problem with this MoBo and 6x RX 580, i dont try switch off integrated VGA so i didnt know what is problem with. I trying reinstall a lot of driver versions last days and nothing..

I using your 3th option and at this time i have hardclocked frequencies in BIOS. I dont like this solution because still dont show temperatures and i cant control FAN speed. I tried rewrite FAN settings in BIOS but dont working, GPU simple ignore it.

How did you solve it?

Thanks, Lukas.

Haha Sure tytanick, the day we can undervolt in linux I am switching all my machines to your OS

or you could just simply try my simplemining.net OS which works out of the box
No dummy plugs needed or any screens connected.

Hey, so I read that people have issues with AMD GPU's, and I have the RX 470/480's. I edited my original post to mention this, thanks for pointing it out, I should have specified.

With which GPUs? i'm using this card with 6 Nvidia GTX 1070 without issues. My onboard card is enable but with afterburner i can manage temp and clock.

What do you guys do for headless starts with AMD RX 470/480 cards on this board? I am unable to apply clocks/volts or fan control to the cards if the onboard vga is enabled, and system doesn't boot if it isn't. I am surprised because these boards are the darling of miners, and these are the ONLY boards that I have encountered this stupid problem on, and I have used several other MSI, Gigabyte, Biostar and even ASrock boards without a hiccup ever. So far this is my understanding of the options :

1) Have an HDMI Cable connected to the primary display adapter and have the monitor powered on when booting the system up, but that means buying multiple monitors and is not cost effective.
2) Buy a dummy HDMI Plug, but even those run upto $15-$20 including shipping, and the costs quickly mount up for a large setup. And besides, the plug has no other use/resale.
3) Hardcode clocks/volts into the card bios - but very few people know how to hardcode vddi/vddc into the bios, and I need to have my cards run on ultra low power settings.
4) Enable On-board VGA, but that means running cards at stock speeds/volts and forgoing the ability to monitor fan speeds and temps. Also, i run windows 10 and apply clocks/volts at each boot using wattool, but if the on board vga is enabled wattool settings arent applied at all, and cards run at stock clocks/volts.

I would like to know if there are any cheap effective hacks that you guys have found and/or use.