H110 Pro BTC+ Cannot boot with more than 9 GPU

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   Hi,
I'm having issues with my H110 Pro BTC+. It won't boot (don't even get BIOS) with more than 9 GPUs installed, on the 10th i get the issue, 9 works fine. I've followed the miners guide and ensured both molex plugs and the Sata connector (so 3 in total) are connected on the motherboard and are also using 3 separate cables back to the master PSU. Can anyone help? OS doesnt matter since it doesnt get that far.

Setup:
H110 pro BTC+
Intel G3930 CPU
4GB Ram
500GB Sata HDD
ATI Rx Vega 64 GPUs
3 x Corsair HX 1200 PSUs (1200 Watts each).

Is there perhaps some sort of undocumented issue with the board not supporting these cards? They require two 8pin PCI-E power connectors each, my power draw should be fine though, I have one PSU dedicated to the mother board and the other two PSUs for the GFX cards.

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Brenning Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 13 Nov 2017 Status: Offline Points: 3	Post Options Post Reply Quote Brenning Report Post Thanks(0) Quote Reply Topic: H110 Pro BTC+ Cannot boot with more than 9 GPU Posted: 13 Nov 2017 at 8:02pm
	Hi, I'm having issues with my H110 Pro BTC+. It won't boot (don't even get BIOS) with more than 9 GPUs installed, on the 10th i get the issue, 9 works fine. I've followed the miners guide and ensured both molex plugs and the Sata connector (so 3 in total) are connected on the motherboard and are also using 3 separate cables back to the master PSU. Can anyone help? OS doesnt matter since it doesnt get that far. Setup: H110 pro BTC+ Intel G3930 CPU 4GB Ram 500GB Sata HDD ATI Rx Vega 64 GPUs 3 x Corsair HX 1200 PSUs (1200 Watts each). Is there perhaps some sort of undocumented issue with the board not supporting these cards? They require two 8pin PCI-E power connectors each, my power draw should be fine though, I have one PSU dedicated to the mother board and the other two PSUs for the GFX cards.

Limoubai Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 25 Nov 2017 Status: Offline Points: 2	Post Options Post Reply Quote Limoubai Report Post Thanks(0) Quote Reply Posted: 25 Nov 2017 at 11:01pm
	Hi, I have the same problem. Cannot boot even in bios, with more than 9 gpus.

ashrafnezhad Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Nov 2017 Status: Offline Points: 1	Post Options Post Reply Quote ashrafnezhad Report Post Thanks(0) Quote Reply Posted: 29 Nov 2017 at 2:41am
	Hi, I have same problem with ETHOS 8 gig ram ddr4 12 gpu rx 470 8gig sapphire

brian.egan Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 04 Dec 2017 Status: Offline Points: 1	Post Options Post Reply Quote brian.egan Report Post Thanks(0) Quote Reply Posted: 04 Dec 2017 at 1:44am
	Same issue here. Has anybody managed to resolve it?

parsec Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 04 May 2015 Location: USA Status: Offline Points: 4996	Post Options Post Reply Quote parsec Report Post Thanks(0) Quote Reply Posted: 04 Dec 2017 at 10:09am
	It's difficult to diagnose these issues, multiple things can affect the detection of the video cards when you use ten or more. If there were simple solutions for this, we would not hesitate to tell you about them. The best I can do is offer some suggestions. Please check the FAQ for your board, there are three topics related to mining: http://www.asrock.com/mb/Intel/H110%20Pro%20BTC+/index.asp#FAQ Follow the instructions in the board's manual, section 2.7 PCIe Power Connector Installation Guide, very carefully: http://asrock.pc.cdn.bitgravity.com/Manual/H110%20Pro%20BTC+.pdf Clearing the UEFI/BIOS, including removing the board's battery, might help with 10+ video cards. Be sure that the Above 4GB MMIO BIOS assignment option in the UEFI, Chipset Configuration screen, is enabled. It is by default. Set the VT-d option, Chipset Configuration, to Disabled. Check that all the ASPM options in Chipset Configuration are Disabled. Set the IOAPIC 24-119 Entries option to Enabled if it is disabled. One other possibility is the amount of DRAM memory you are using. The OS/Windows reserves some of the PC's memory for system use with hardware like video cards. The amount allocated depends on how much memory is available overall. If not enough memory is available, more cards won't be detected. Normally Windows will boot in that situation, but the card(s) won't be recognized. Related to this is how much memory is allocated to the Intel iGPU. Set the Share Memory option, in Chipset Configuration, as low as possible. Also be sure to set the IGPU Multi-Monitor to disabled, IF you do NOT use the Intel iGPU. Disable as much of the unused hardware you can in the UEFI. Such as, Onboard HD Audio, Onboard HDMI HD Audio, Serial Port and Parallel Port. Do not use the Fast Boot option, keep it Disabled. Try increasing the PCH/Chipset voltage with the PCH Voltage option, and the VCCIO Voltage in the OC Tweaker\Voltage Configuration screen. You can file a support request with ASRock in the appropriate region. That is the Contact Technical Support for (MB/Mini PC/IPC) from this page, or the Support link at the top right of the information page for you board in your region of the world: http://www.asrock.com/support/index.asp


Zjenep Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 24 Nov 2017 Status: Offline Points: 20	Post Options Post Reply Quote Zjenep Report Post Thanks(0) Quote Reply Posted: 05 Dec 2017 at 5:51pm
	Someone else who could not use more than 9 GPUs was using "mining edition" cards without graphics output. So he had to use the iGPU to get graphics output. Once he placed (another) graphics card with graphics output in the main PCIe slot (PCIE2) and disabled IGPU Multi-Monitor, he could suddenly use more than 9 GPUs and fill up the rest of the slots.

dawood121 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 06 Dec 2017 Status: Offline Points: 1	Post Options Post Reply Quote dawood121 Report Post Thanks(0) Quote Reply Posted: 06 Dec 2017 at 10:57am
	I have the same problem, will not power on or POST with 6 GPUs. I'm disappointed with this board - it's BRAND NEW !! and it won't even post!.

Limoubai Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 25 Nov 2017 Status: Offline Points: 2	Post Options Post Reply Quote Limoubai Report Post Thanks(0) Quote Reply Posted: 07 Dec 2017 at 5:08am
	I tried the purpose of Zjenep but it does not work. The same problem, with 9 gpus it boots (can access to the bios), with 10 gpus not (cannot access to the bios). Please @Asrock help us!

eodbrent Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 31 Dec 2017 Status: Offline Points: 4	Post Options Post Reply Quote eodbrent Report Post Thanks(0) Quote Reply Posted: 31 Dec 2017 at 4:20am
	Same here, but 6 GPU works, 7 freezes and load screen. It's been almost 4 days since I submitted a support ticket as well, no response.

fiezo Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 05 Jan 2018 Status: Offline Points: 1	Post Options Post Reply Quote fiezo Report Post Thanks(0) Quote Reply Posted: 05 Jan 2018 at 5:48pm
	Help, i have same issue, 9 cards working fine, but when i connect 10th it stuck on ethos boot can't get to terminal. HELP