I have tried 4 different types of RDIMM's (2133, 2400, 2666 and 3200). But the 3200 is SKHynix. These chips work fine with the 7742.
I have tried 1 RDIMM in each of the 8 slots one after the other with attempted power-on for each. (Motherboard manual says for 1 DIMM, put it in slot C2)
System log from BMC:
ID: 18 October 25th 2021, 9:54:34 pm AMIF02F7496EBA0 spx_restservice: spx_restservice - - [4067 : 4067 CRITICAL][libipmi_AMIOEM.c:5987]Unable to get Current Active Image 1c1 -
ID: 19 October 25th 2021, 9:54:34 pm AMIF02F7496EBA0 spx_restservice: spx_restservice - - [4067...
Since this is an endless loop, I didn't note the starting code. Here are some codes that come before the loop:
dE etc. etc.
So it seems the last code of the cycle is 50: Memory initialization error and then it begins again with dE (whatever that means).
My ASUS KRPA-U16 motherboard is working fine with EPYC ROME 7742. I upgraded the BIOS to both ROME and MILAN latest versions using BMC web ui. Upon installing the EPYC 7D13 processor it does not POST. If I replace the CPU with the original 7742 is works again.
It's hard to find any info on this...