Pcie riser not working

[mr_azerty]

Hello. I'm using a pcie x1 - 4usb to pcie x16 riser setup. The risers are powered by a sata-molex cable (Yes I am aware that they have heating problems.). When I try to boot up my pc with a riser and a gpu attached, after passing the opportunity to enter the bios my screen turns black (The monitor stops receiving data from the gpu installed inside my pc). I have no idea why this happens, but if I use the exact same gpu but attach it directly into the motherboard it works just fine.

EDIT: I tried replacing the card my monitor is hooked up to from a rx570 to a gtx1060, this time my pc boots up just fine but the monitor freezes after about 10 seconds.

EDIT2: I forgot to mention that when I unplug the external gpu and boot my pc up normally, I get a notice about openCL not working properly.

 

[Mark RM]

It's possible that changing the position of the card via the 4in1 is changing the position of the card in terms of what activates first, try hooking the display cable up to the card you have on the riser.

 

[mr_azerty]

It's possible that changing the position of the card via the 4in1 is changing the position of the card in terms of what activates first, try hooking the display cable up to the card you have on the riser.

Unfortunately that did not change anything.

 

[Mark RM]

OK, first off, what motherboard is it and second, what slot are you plugging into and third what chip is the card using is it based on ASMEDIA ASM1184e ?

 

[AnonymousAndy]

How many risers do you have connected to this "sata-molex" cable?

 

[mr_azerty]

How many risers do you have connected to this "sata-molex" cable?

It can take 4 but I'm trying just one for now.

 

[mr_azerty]

OK, first off, what motherboard is it and second, what slot are you plugging into and third what chip is the card using is it based on ASMEDIA ASM1184e ?

Msi z270 tomahawk, This port: https://ibb.co/dZ9Wn6 , I'm not sure which chip you are talking about.

 

[Mark RM]

I'm talking about the chip on the multiplier card.

Only four lanes from the CPU PCIe go to the chipset, from there these are multiplied by up to four times for sixteen more additional PCIe lanes. These multiplied lanes run all the slots except the primary slot, go to USB 3.1 , go to the M.2 drivers and SATA drives.

Only the primary x16 slot on that motherboard is NOT currently being multiplied already. You won't be able to use a multiplier card in any of the other slots as far as I know.

Try your card in the primary PCIe slot. There's still no guarantee it will work because that's up to the BIOS if it allows those lanes to be multiplied.

 

[mr_azerty]

I'm talking about the chip on the multiplier card.

Only four lanes from the CPU PCIe go to the chipset, from there these are multiplied by up to four times for sixteen more additional PCIe lanes. These multiplied lanes run all the slots except the primary slot, go to USB 3.1 , go to the M.2 drivers and SATA drives.

Only the primary x16 slot on that motherboard is NOT currently being multiplied already. You won't be able to use a multiplier card in any of the other slots as far as I know.

Try your card in the primary PCIe slot. There's still no guarantee it will work because that's up to the BIOS if it allows those lanes to be multiplied.

Do you mean the highest up pcie x1?

 

[Mark RM]

No I mean the highest up x16 slot is the only one you'll be able to multiply, IF the BIOS allows.

 

[AnonymousAndy]

How many risers do you have connected to this "sata-molex" cable?

It can take 4 but I'm trying just one for now.

The cable can only support two risers safely, for when you get to that point, even though it has four connections.

 

[mr_azerty]

No I mean the highest up x16 slot is the only one you'll be able to multiply, IF the BIOS allows.

How come there is a pcie x1 splitter then?

 

[mr_azerty]

How many risers do you have connected to this "sata-molex" cable?

It can take 4 but I'm trying just one for now.

The cable can only support two risers safely, for when you get to that point, even though it has four connections.

I am aware, it should be okay if I attach two to a separate psu right?

 

[Mark RM]

No I mean the highest up x16 slot is the only one you'll be able to multiply, IF the BIOS allows.

How come there is a pcie x1 splitter then?

because the boards we choose for mining on aren't gaming boards with their PCIe sockets already split.

For example of best use of a splitter card... I bought a used Matx Gigabyte board with an Athlon II something or other and eight gigs of RAM for 40 bucks. The board only had one x16 slot and one x1 slot at , both at PCIe 2.0. I put splitter cards in both slots for 15 bucks each. I'm into the board, CPU and RAM and splitter cards for 70 bucks Canadian. It supports eight cards and works well mining monero on older 2 /3GB cards.

Splitter cards work well in places they're designed to go.

 

[mr_azerty]

No I mean the highest up x16 slot is the only one you'll be able to multiply, IF the BIOS allows.

How come there is a pcie x1 splitter then?

because the boards we choose for mining on aren't gaming boards with their PCIe sockets already split.

For example of best use of a splitter card... I bought a used Matx Gigabyte board with an Athlon II something or other and eight gigs of RAM for 40 bucks. The board only had one x16 slot and one x1 slot at , both at PCIe 2.0. I put splitter cards in both slots for 15 bucks each. I'm into the board, CPU and RAM and splitter cards for 70 bucks Canadian. It supports eight cards and works well mining monero on older 2 /3GB cards.

Splitter cards work well in places they're designed to go.

Yeah, I was trying to save money and not replace the mobo, would it work If I put a pcie x16 -x1 in the main slot?

Edit: Scratch that, apparently pcie x1 will fit in an x16 slot, should I just put it in the main x16?

 

[Mark RM]

Yeah, I was trying to save money and not replace the mobo, would it work If I put a pcie x16 -x1 in the main slot?

Absolutely it would.

 

[mr_azerty]

Yeah, I was trying to save money and not replace the mobo, would it work If I put a pcie x16 -x1 in the main slot?

Absolutely it would.

I apologize for my ignorance. Thank you so much for your time! I really appreciate it.

 

[Mark RM]

I apologize for my ignorance. Thank you so much for your time! I really appreciate it.

You have nothing to apologize for, you stuck with the conversation and got the information you needed to get something done.

I wish you profitable mining.

 

[mr_azerty]

I apologize for my ignorance. Thank you so much for your time! I really appreciate it.

You have nothing to apologize for, you stuck with the conversation and got the information you needed to get something done.

I wish you profitable mining.

So I plugged my multiplier card into my main pcie x16 slot and pressed the power button. This time the vga debug light comes on. I believe it may be looking for video output on the main slot instead of the secondary slot my actual gpu is in.

 

[Mark RM]

Probably, there's no real reason not to use the iGPU though for screen output, it doesn't take any PCIe bandwidth

 

[mr_azerty]

Is there a way to get it to use a different slot though?

 

[Mark RM]

Not sure what you mean by different slot. If the card works in this board it will work in slot PCI_E1 or PCI_E4.

For your best chance at getting this setup working, on page 44 of the manual you'll see an option to force PEG X max link speed, try pushing it down to Gen 2 (zero effect on mining).

On page 45 it talks about integrated graphics configuration, set IGD as the primary and hook your monitor up to it so we can see what's going on if it gets that far. Disable multimonitor support for IGD.

Disable all serial and other ports including M.2 etc not needed in BIOS.

Try the card by itself with nothing plugged into it at all, does it boot with the integrated video? If yes then add one GPU to your splitter card and go from there until you add all four. If no then it's not ever going to work on that board because the BIOS won't support multiplying the PEG lanes (the chipset doesn't care, it's the BIOS that rules here).

 

[mr_azerty]

Not sure what you mean by different slot. If the card works in this board it will work in slot PCI_E1 or PCI_E4.

For your best chance at getting this setup working, on page 44 of the manual you'll see an option to force PEG X max link speed, try pushing it down to Gen 2 (zero effect on mining).

On page 45 it talks about integrated graphics configuration, set IGD as the primary and hook your monitor up to it so we can see what's going on if it gets that far. Disable multimonitor support for IGD.

Disable all serial and other ports including M.2 etc not needed in BIOS.

Try the card by itself with nothing plugged into it at all, does it boot with the integrated video? If yes then add one GPU to your splitter card and go from there until you add all four. If no then it's not ever going to work on that board because the BIOS won't support multiplying the PEG lanes (the chipset doesn't care, it's the BIOS that rules here).

Uh. My only storage module is m.2...

 

[Mark RM]

I said only disable what's not needed. If you need it keep it on.

How's it going, did it work at all?

 

[mr_azerty]

I said only disable what's not needed. If you need it keep it on.

How's it going, did it work at all?

Well, for some reason integrated graphics will allow me to access the bios but when it boots my OS it stops working. This is without the multiplier card in.