Supermicro M11SDV-8C-LN4F memory population issue

[m0t0rh3ad]

Hello, I've got MB Supermicro M11SDV-8C-LN4F and have such problem. when all DIMMs (4 slots) populated MB can pass Memtest and SuperDiag Tests (Supermicro tool), but I can't install OS, I've tried ESXi and Linux - boot loop - installer starts and then reboot... When Im using 1-2-3 slots populated I can install OS and run it without any problems, I also tried to replace DIMMs. When I've added 4th module - again boot loop or error (screenshot attached).
Maybe someone already got similar issue and resolved it?

 

[Sean Ho]

What's your RAM? Tried just A2+B2? Or A1+B1? Rotate different DIMMs to see if the issue is sticks or slots?

 

[m0t0rh3ad]

Hynix RDIMM (photo). I've tried 1 module (A2,B2), 2 A2+B2, 3 A1+A2+B2 (manual recommends such config for balanced population https://www.supermicro.com/manuals/motherboard/EPYC3000/MNL-2172.pdf). MB runs good with 3 modules with OS, with 4 Tests ok, OSes not booting... Also I've tried to replaced DIMMs between Slots...

 

[RolloZ170]

use memtest86 with ECC polling on.
afaik with 4 modules interleaving enables all memory spread over all 4 modules.
means with 4 modules it is not important in which slot the defective(ecc multi bit errors) DIMM is populated.
with only 3 modules the defective area is (probably) at the end of the memory space.

 

[m0t0rh3ad]

ok, will try with memtest. Right now I'm testing every module in single mode (one by one) with superdiag because support requested this.

 

[Sean Ho]

yes that's a good idea to test them one by one

 

[m0t0rh3ad]

Memory test ok, support recommended downgrade BIOS to 1.0b, done, but no result...

 

[strh]

Maybe this helps:

Broadcom Community - VMTN, Mainframe, Symantec, Carbon Black

Broadcom Community - VMTN, Mainframe, Symantec, Carbon Black

communities.vmware.com

On a number of Supermicro boards while installing linux I've also had to unplug plug in a USB device to get past weird installation issues using a USB dongle.

 

[Sean Ho]

It'd certainly be easy to try a different USB key or port, or even PXE boot an installer

 

[m0t0rh3ad]

I think I've found solution - set Memory Freq Manually.. testing right now...
In MB manual I found next - if 4 Slots populated - Memore Freq - 1866Mhz, but I can see - 2133MHz during performing Tests, I set manually - 1866MHz, and I can install ESXi and run Hypervisor, now checking everything
PS SuperMicro support suggested me to return MB and get new one