36 Hour Rubbleshoot - ASUS z270-a only mounting 5 of 6 rx570

[jvonbaker]

Ok....I have to reach out for help with my first post to this forum.  I've searched and searched and troubleshot until I'm out of ideas.  I've searched the forum and the google webs and my eyes are popping out of my head.  Apologies if this has been answered already.

Asus Prime z270-a is only picking up 5 of 6 of my Sapphire Pulse rx 570's.  Here's what I've done so far:

- isolated each card and riser to make sure they are working individually
- DDU'd the drivers in safe mode and reinstalled the crypto driver from AMD
- scaled in by loading one card at a time and rebooting after each card; it refuses to recognize card 6
- changed bios settings to gen2 and G4 enabled
- changed pci configuration to use all three PCI 16 slots and then the first three PCI 1 slots

still no luck.  I'm out of ideas.  HELP!

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[halker2010]

Ok....I have to reach out for help with my first post to this forum.  I've searched and searched and troubleshot until I'm out of ideas.  I've searched the forum and the google webs and my eyes are popping out of my head.  Apologies if this has been answered already.

Asus Prime z270-a is only picking up 5 of 6 of my Sapphire Pulse rx 570's.  Here's what I've done so far:

- isolated each card and riser to make sure they are working individually
- DDU'd the drivers in safe mode and reinstalled the crypto driver from AMD
- scaled in by loading one card at a time and rebooting after each card; it refuses to recognize card 6
- changed bios settings to gen2 and G4 enabled
- changed pci configuration to use all three PCI 16 slots and then the first three PCI 1 slots

still no luck.  I'm out of ideas.  HELP!

are all cards connected with risers did you try all the risers with one gpu to see if any of them are faulty or tried connecting the faulty pci e slot directly without risers to see if it works ?

[szafa]

Can you check device manager is all 6 card are install?

[S_Natural]

Ok....I have to reach out for help with my first post to this forum.  I've searched and searched and troubleshot until I'm out of ideas.  I've searched the forum and the google webs and my eyes are popping out of my head.  Apologies if this has been answered already.

Asus Prime z270-a is only picking up 5 of 6 of my Sapphire Pulse rx 570's.  Here's what I've done so far:

- isolated each card and riser to make sure they are working individually
- DDU'd the drivers in safe mode and reinstalled the crypto driver from AMD
- scaled in by loading one card at a time and rebooting after each card; it refuses to recognize card 6
- changed bios settings to gen2 and G4 enabled
- changed pci configuration to use all three PCI 16 slots and then the first three PCI 1 slots

still no luck.  I'm out of ideas.  HELP!

are all cards connected with risers did you try all the risers with one gpu to see if any of them are faulty or tried connecting the faulty pci e slot directly without risers to see if it works ?

halker2010 is right, you should try 1 GPU with each riser. I've had some problems like that because of USB cable.
What is your OS? What is the vesion of bios? It should be v0906 or later.

[jvonbaker]

I located the card that was not showing up, which was in the PCIe1_2 slot.  I shut down, and removed all cards except that one and it worked with just that one card and riser installed.  This leads me to a conclusion that it is something to do with mounting the sixth card.  Five works fine.  6 is no good.

Device manager shows 5 GPU

mobo bios is newest version, flashed today.

[Daniel0303]

From what I understand here all 6 card and 6 riser working fine but unable to detect when 6th is plug in?
Does your psu have enough power?
Did you tried to change power cable that powering the riser?
Did you try without gpu drivers?

[jvonbaker]

Daniel- yes, all six GPU work fine independently but windows 10 does not see them all when plugged in together.  It will only see up to 5.  GPU seems okay, it’s a brand new 1200 w platinum evga. I also tried completely wiping the GPu drivers with DDU and still no joy. 

I’m starting to think this may be a windows 10 problem.  I may reinstall.

Thanks for all the suggestions, please keep them coming!

[jvonbaker]

Ok, so i reset my bios, changed all appropriate PCI settings to Gen2, enabled 4g, re-installed windows 10, ran all updates, disabled update service after that, plopped all 6 sapphire pulse rx 570's into PCI slots 1,2,3,4,5, and 7...then installed radeon crypto drivers and STILL ONLY SEE 5 CARDS.

Anyone got a flamethrower?

[fanatic26]

run linux and most of your problems will immediately go away

[S_Natural]

Ok, so i reset my bios, changed all appropriate PCI settings to Gen2, enabled 4g, re-installed windows 10, ran all updates, disabled update service after that, plopped all 6 sapphire pulse rx 570's into PCI slots 1,2,3,4,5, and 7...then installed radeon crypto drivers and STILL ONLY SEE 5 CARDS.

Anyone got a flamethrower?

Set bios to default and just do 2 things:
1. PCIe Speed to Gen 2 (Advanced -> PCH Configuration -> PCI Express Configuration -> PCIe Speed)
2. Enable 4G

You're going to see 6 GPUs in Devide Manager. If not, your riser has problem   

[duyquang06]

Ok, so i reset my bios, changed all appropriate PCI settings to Gen2, enabled 4g, re-installed windows 10, ran all updates, disabled update service after that, plopped all 6 sapphire pulse rx 570's into PCI slots 1,2,3,4,5, and 7...then installed radeon crypto drivers and STILL ONLY SEE 5 CARDS.

Anyone got a flamethrower?

Set bios to default and just do 2 things:
1. PCIe Speed to Gen 2 (Advanced -> PCH Configuration -> PCI Express Configuration -> PCIe Speed)
2. Enable 4G

You're going to see 6 GPUs in Devide Manager. If not, your riser has problem  

Exactly. U must see 6 gpus on Device Manager, otherwise ur riser sucks

[Daniel0303]

Daniel- yes, all six GPU work fine independently but windows 10 does not see them all when plugged in together.  It will only see up to 5.  GPU seems okay, it’s a brand new 1200 w platinum evga. I also tried completely wiping the GPu drivers with DDU and still no joy. 

I’m starting to think this may be a windows 10 problem.  I may reinstall.

Thanks for all the suggestions, please keep them coming!

Do you have extra riser?
Did u try another power cable to riser and gpu?

It might sounds stupid, but changing power cables work for me sometimes, and did you use metal or aluminum frame? sometimes the solder on the riser poke out of the form and short.

[Bitsaurus]

Try disabling 4g encoding, see if it detect all the cards and error 20s on a few cards, then you can go back and re-enable 4g.

As mentioned above sometimes recabling might solve the issue if the power supply isn't providing enough power or sometimes just a loose connection somewhere.