Problems with 32GB memory

[likedunhill]

Hi Everyone!

System Details:

• Motherboard: ASRock Rack E3C246D2I
• RAM: DIMM4_A1 Samsung M391A4G43MB1-CTDQ
• HDD Controller: LSI SAS 9207-8i
• Boot Drive: SATADOM-SL 3IE3
• Hard Drives: HGST Ultrastar He10 HUH721010ALE600 0F27466
• Hard Drive Configuration: 6 drives in RAIDZ2
• FreeNAS Version: FreeNAS-11.2-U7

Issue:

I am trying to use Samsung M391A4G43MB1-CTDQ which is on the E3C246D2I QVL list. I am able to get the system to boot, but I get consistent crashes when mounting my root partition. If I go back to Kingston 9965745-002.A00G (16GB) the problem goes away. I have tried two different sticks of Samsung 32GB, but am only populating DDR4_A1 memory slot.

The error I get is:

?MI ISA 30, EISA ff
?MI/cpu0 ... going to debugger
[ thread pid 11 tid 100003 ]
Stopped at acpi_cpu_idle_mwait+0x70; testq %rsi, %rsi
db>

The IPMI shows an "Uncorrectable ECC - Asserted" error. I've tried this with two different known good memory sticks (but only populating the single DDR4_A1 slot).

This seems like it might not be hardware related, since it always fails at this point in the boot sequence. I plan on opening a support case with ASRock as well, but wanted to see if anyone here had ideas? I can also post various BIOS/IPMI versions, if that's of help in case anyone really can dig into this one..

Thanks again for your help!

 

[G8One2]

Run Memtest and see what happens. It looks like a ram problem to me, but i could be wrong. Its possible to have a bad stick of ram.

 

[G8One2]

Maybe try a different slot too.

 

[likedunhill]

It looks like this is a motherboard BIOS issue. I upgraded to the new Mehlow refresh BIOS and I no longer get a crash. This upgrade also installed a new Intel ME in the process. I am using a E21xx processor so wasn’t expecting this to do anything to be honest.

Thanks!