Problem with the Mainboard asrock z97 anniversary

[willi9974]

Hello,

if i plug my RX480 in the x16 PCI-E directly on the board, the card working fine and make 29,5 mhs.

if i plug this same card with a riser x1 to x16 adapter cable, the miner will not find a GPU. if i use 5 other riser cables it is the same. if i use a other RX480 GPU directly on the x16 PCI-E slot on the mainboard, all other gpu cards are working. but if i use a riser card, no other cards are working
i have tryed to plug the riser cable on a othe pci-e slot, but it is the same.

must i change any settings in the motherboard bios, to bring a x16 card in a x1 slot to work?

Best regards
Willi

[Vann]

I have the same cards on a ASRock Z97X killer motherboard and had a similar problem. Setting the second and third PCI-E x16 slots in the BIOS from Auto to GEN 3 solved it for me.

[fanatic26]

I had a bunch of asrock H97 anniversary boards that required me to use a 16x to 16x riser to activate the full length slot. Not sure if it is the same with that board but it might be worth a shot if you cant figure anything else out.

[Vaccinus]

I have the same cards on a ASRock Z97X killer motherboard and had a similar problem. Setting the second and third PCI-E x16 slots in the BIOS from Auto to GEN 3 solved it for me.

is this the same issue with the asrock z97 extreme 4? but if i set gen 3 i can't use the riser x1 slot anyway, do i need gen 2? in my bios setting i cna only see pcie x1 and x5 to set auto or gen which is the right one?

[willi9974]

setup GEN3 but now the System will not boot, fucking Z97 i hate you!

[Vann]

I have the same cards on a ASRock Z97X killer motherboard and had a similar problem. Setting the second and third PCI-E x16 slots in the BIOS from Auto to GEN 3 solved it for me.

is this the same issue with the asrock z97 extreme 4? but if i set gen 3 i can't use the riser x1 slot anyway, do i need gen 2? in my bios setting i cna only see pcie x1 and x5 to set auto or gen which is the right one?

I think the problem is when set to auto the board configures the slots for SLI and overclocking. Since you are only using a 1x riser in the 16x slot, it can't detect the card. The other issue is Z97 has limited PCI-E configuration options in the bios. Some boards have other settings like 4G decoding that you need to set for the PCI-E x16 slots to work with risers. You also need to set the x16 slots to GEN 2 or GEN 1 on some boards.

[Vann]

setup GEN3 but now the System will not boot, fucking Z97 i hate you!

Make sure you have the monitor plugged in to the vga input set it the bios and try setting it to GEN 2 or GEN 1. I had to leave the primary PCI-E x16 set to auto and the other two to GEN 3 and I also enabled the power management setting under that.

[willi9974]

The only thing what i can change in the bios is

Chipset--> PCIE2 Link Speed = in Auto / gen1 / gen2 and gen3
Primary Grafics Adapter = onboard / PCI Express / PCI

Some are spoken to set some configs per PCI-E slot, but i Cent find this Option in my bios


A other Question: can i run only 4 GPUs Witze the Mainboard? I have only 4 pci-e Ports and two pci Ports. Can i Plug a x1 cable in the pci Slot?

Edit: Asrock Bios is updated to the last bios Version

[willi9974]

Ok, Problem solfed.
I orderd a new Mainboard Asrock H81 BTC pro