Help with Gigabyte Z68AP-D3 PCI-E 1x slots not working

[Lamkodlak]

Hello,

I am the new here, i just bought used mainboard gigabyte Z68AP-D3, rev 2.0
The trouble is that i cant make PCIEX1_2 and PCIEX1_3 running with GPU
The strange thing is that PCIEX1_1 is running ok with my gpu, also PCIEX16 and PCIE4 is working.
I am trying it only with one GPU, others are disconnected.

I tryed almost everything, reset cmos, update bios, I read about jumper wire, I would wire it, but why is PCIEX1_1 running ok? I'd like to consultif its necessarily to wire it.

Could someone please help me?

Thank you a lot

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[1713554782]

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[Lethn]

You're not being very clear? What's your power supply and how many gpu's are you trying to run? It may not be anything to do with the motherboard and we can't help you unless we know all the specs and of course what you're actually trying to set up the computer for.

[Lamkodlak]

You're not being very clear? What's your power supply and how many gpu's are you trying to run? It may not be anything to do with the motherboard and we can't help you unless we know all the specs and of course what you're actually trying to set up the computer for.

Thank you for your reply
Power supply is Fortron Raider Ra750 (I have ready Enermax 1500W Platinum for this rig-can power 5GPU), but i don't think current trouble is in power supply right now
I would like to run 5 GPU, is it possible? I saw post, that some1 is running with 5, saw picture of 4gpu on this board
PC purpose is litecoin mining using windows and cgminer
I am trying to solve why the PCIE1_2 and 1_3 are not running only with one GPU, when i plug it anywhere else, even PCIE1_1 it works
OS System is Win7 PRO x64
RAM 4GB 1600Ghz Kingston
CPU Celeron G1620
Motherboard Gigabyta Z68AP-D3 rev 2.0

What other information you need?
Kindly thank you

[MR1200]

Some motherboards will turn off a 1x slot if PCI 1 and PCI 3 are populated.

I believe that is what is happening here.

[Lamkodlak]

Some motherboards will turn off a 1x slot if PCI 1 and PCI 3 are populated.

I believe that is what is happening here.

I have only 1GPU plugged right now, others are free, so I think thats not a problem.

[Lethn]

What version of PCI Express do these GPU's and the motherboard use? 2.0 or 3.0? It's just a case of first making sure you haven't made a mistake with not matching up all the numbers with your hardware so we're 100% sure.

[Lamkodlak]

What version of PCI Express do these GPU's and the motherboard use? 2.0 or 3.0? It's just a case of first making sure you haven't made a mistake with not matching up all the numbers with your hardware so we're 100% sure.

Manual from mainboard says : All PCI Express slots conform to PCI Express 2.0 standard

My GPU is Sapphire R9 280x Vapor-X, havent found manual, I just found that it require PCI-E 16x 3.0 standard(i guess for gaming performance)
However in one of mine PCI-E 1x and 16x this gpu is working, it would be nice to find someone who have the same motherboard

[Lethn]

Is this your GPU? http://www.sapphiretech.com/presentation/product/product_index.aspx?pid=2024&lid=1

if your motherboard can handle only 2.0 then I'd say that's most likely the problem but see if anyone more experienced can find anything else that might cause it but that looks like the most obvious thing to me if it's not the PSU.

[onscreen]

I have this board also and have the exact same problem, the 1st 1x slot works fine but the middle 2 1x slots do not work at all. I've also tried shorting the slot and still no go. 

[Lamkodlak]

I have this board also and have the exact same problem, the 1st 1x slot works fine but the middle 2 1x slots do not work at all. I've also tried shorting the slot and still no go. 

I found a guy, who is using the same board, here's what he told me: "I use PCIE1_1 and PCIE1_3. PCIE1_1 does not need jumper.  PCIE1_3 needs A1B17 jumper" Maybe this helps you

[onscreen]

I have this board also and have the exact same problem, the 1st 1x slot works fine but the middle 2 1x slots do not work at all. I've also tried shorting the slot and still no go. 

I found a guy, who is using the same board, here's what he told me: "I use PCIE1_1 and PCIE1_3. PCIE1_1 does not need jumper.  PCIE1_3 needs A1B17 jumper" Maybe this helps you

I did try jumping the slot but didn't work for me, maybe I didn't do it properly... will have another go.

Ask him if he is using v1.0 of the board of v2.0, maybe it makes a difference?

[Lamkodlak]

I have this board also and have the exact same problem, the 1st 1x slot works fine but the middle 2 1x slots do not work at all. I've also tried shorting the slot and still no go. 

I found a guy, who is using the same board, here's what he told me: "I use PCIE1_1 and PCIE1_3. PCIE1_1 does not need jumper.  PCIE1_3 needs A1B17 jumper" Maybe this helps you

I did try jumping the slot but didn't work for me, maybe I didn't do it properly... will have another go.

Ask him if he is using v1.0 of the board of v2.0, maybe it makes a difference?

Were you lucky with jumping?

[onscreen]

Nope, tried copper from an ethernet cable and telephone wire, couldn't get neither to work, what about yourself?

[Lamkodlak]

Nope, tried copper from an ethernet cable and telephone wire, couldn't get neither to work, what about yourself?

I sold my mainboard and cpu, now I have Ga-780T-D3L which seems to be working all 5 slots(tryed with only 2gpu yet)

[krob]

This is kinda old.. but.. I found out what causes this.. I bought a refurbished board: Gigabyte GA-Z97X-UD3H

I needed the PCI port.. but also the 1x slots were important. I'm not coin mining but this is the only place that people ran into this issue that google could find.

I figured out wtf was going on with the mobo.. if you use all 3 pci-e 16x slots, on the 3rd slot.. if you use it at 4x, it disables all the other 1x slots since it uses the same bus at the 3xpci-e 1x slots via a feature called PCH Auto. so 4 slots share the same bandwidth. So you have to set a feature called PCH from: auto, or 4x to:1x, this turns all 3 x pci-e 1x back on, but also reduces the last 16x slot to a 1x speed., so now you have 4 x pci-e 1x, 3 in pci-e 1x form factor, 1 in pci-e 16x form factor. I thought it was due to the addition of the PCI slots.. but man.. this kinda setup is really janky.. I will think twice before purchasing boards again where they have so many 1x slots.. unless I know very specifically the buses are shared or dedicated.

[JimiP1989]

Krob. I don't care where in the world you live. I will buy you a beer... somehow.

For anyone still struggling with this issue, just to make it a littler clearer (after consulting the manual):

Krob is correct - You're looking for PCH, however this will only be visible to you if you have "Platform Power Management" enabled in the BIOS. I've spent about 24 hours trying to get this one sorted. Thanks Krob and I hope anyone else who has this issue will find these two posts useful.