Invalid dimm population ошибка

As I purchased this board secondhand, I’m not sure if this is an S2600CP2 or S2600CP4. There is a sticker that reads: PBA E99552-507 QSCP22002137

I have dual Xeon E5-2630L v2 CPUs, and I have 4 x 8GB 1333MHz DDR3 registered, ECC DIMMs on order.

While waiting for these DIMMs to arrive, I decided to test the board with some desktop DIMMs just to make sure that the board is in working order. My understanding is that this board will accept regular desktop DIMMs. According to the «Technical Product Specifications», this board is supposed to support UDIMMs. Unless, there’s such a thing as unregistered server DIMMs, I’m assuming «UDIMMs» is the same as typical desktop DIMMs.

First, I tried to a single 4GB 1333Mhz DDR3 desktop DIMM and got the «Invalid DIMM population» on POST. My understanding is that a single DIMM configuration is supported. I tried this single DIMM in all 4 banks, and got this error each time.

Second, I tried various combinations of 4 x 8GB 1600Mhz DDR3 desktop DIMMs. I’ve used these DIMMs singly, in pairs, and all 4 at a time. I’ve tried filling both slots of 2 channels as well as single slots of 4 channels. I’ve tried a single DIMM in all 4 banks, observing the «farthest fill first» rule.

Another thing to note is that although the «Invalid DIMM population» error appears on the display during POST, the LED POST progress code does not indicate this. According to the specifications, this error SHOULD BE indicated by:

Lower Nibble LEDs (lit green): # 0, # 2, # 3

Upper Nibble LEDs (lit amber): # 5, # 6, # 7

However, in MY CASE, the LEDs are lit as follows:

Lower Nibble LEDs (lit green): # 1, # 2, # 3

Upper Nibble LEDs (lit amber): # 5, # 6, # 7

I don’t even see this combination in the technical specifications.

Here is a video showing the POST progress LED sequence:

Supermicro DIMM population error when swapping CPU

Hey Homelab!

I’m currently upgrading a server which has a Super X10DRL-i motherboard in it with a single Intel Xeon E5-2609V3 CPU. In this configuration, everything works just fine.

I’d like to upgrade the CPU to the Intel Xeon E5-2699 v3. According to the spec sheets for both the motherboard and the CPU, everything should work together (I’m 99% sure on this, but may have missed something). One thing to note is that the Xeon E5-2699 v3 that I am using is a sample CPU, not a retail one. When replacing the old CPU with the new one (all else kept the same) I get an error message on boot: «Incorrect memory DIMM population, check Memory Population Rule».

I’ve spent about 24 hours trying to figure this out. So far I have updated BIOS to the most recent version and I’ve tried playing around with the DIMM placement. All help and suggestions would be appreciated.