Hi,
I Just have received my new Supermicro H12SSL-i MB to build my home server. Unfortunately seems that my system is broken as I am not able to start the machine.
After I turn on the power supply the LE1 LED blinks quickly until the LEDM1 (BMC) starts to blinks quickly and then if off. The BMC then goes in the heart beat mode that I find normal from manual, however the LE1 should stay lit.
I have access to BMC through IPMI interface, but the CPU and the RAM amount is not correct as I am using Epyc 7262 and 4x Samsung 3200 stick’s. I need to mention that I have re-seated the CPU several times.
Anyone ahs any idea what might be wrong?
Thank you for your support.
What happens when you send it a power-on command? Anything in the system event log? It would seem it has decided one of your components is not compatible… No idea if it’s PSU, CPU, RAM, whatever. Swapping out components may help you find out. Clearing NVRAM and leaving it powered off for a bit also might help.
I’ve got a very similar setup, same mainboard, 4 dimms, and 7252.
Just to clarify, have you provided the soft-on signal, either through the power switch header or the BMC interface? For what you describe is expected before giving the soft-on, LE1 should stop blinking and turn black after BMC has booted, after that only when you give the soft-on it would turn on and stay lit (together with the rest of the system).
The above is assuming you haven’t configure it in BIOS to power on automatically when power returns - but I assume you haven’t as you haven’t got it to start yet.
Either way, the fact that BMC sees the wrong CPU and memory config suggest something is wrong. I see it laying on a flat surface and not being mounted in a chassis. Have you tried with it mounted in a chassis? I would suspect that next - some mainboards seem to rely on electrical contact between the chassis mounts and the cover of the PSU. Perhaps they do some of the grounding this way, rather than routing all ground to the PSU connector.
In the past I’ve experienced a Supermicro mainboard (H8DG6) not functioning correctly when I had it mounted on a loose mainboard plate, and the PSU cover wasn’t in contact with the plate. Connecting them solved the problem. I don’t remember the exact symptoms back then.
Hi,
I have tried using 1,2, 3 and 4 RAM sticks.
I have used a different power supply (both are desktop PSU 850W).
Tried to use DDR4 2133(this is what i have available).
Ok! Did you rule out the grounding hypothesis in the process of testing this?
I.e. my suggestion that the issue was due to a grounding failure, as a consequence of the MB not being mounted in a chassis. It is not clear from your description whether you tested to rule out that possibility - if your friend’s MB was mounted in a chassis and yours were still not, and you simply switched the CPUs between the MBs, then you would not have ruled it out.
I don’t really know whether this possibility is real, but if it is you would see the same behavior with a replacement MB. Also, I’m curious whether my suggestion holds any water
Any MB that won’t work without chassis grounding should be considered defective, the chassis is not there to provide a ground/current path but rather EMI shielding only. Allowing a signal/ground return to run via the chassis defeats the shielding entirely.
Also I have this exact motherboard and can confirm that it does indeed power up without a chassis.
@gvi70000 Did you check the firmware versions? I have been hacking on this board and found it has the same LED behaviour if the “Golden Image” is not set (not miss-identification). This should have been done from factory but if it has not, go to the IPMI firmware inventory page and click the pencil icon where you can opt to update the golden image from the main image.
Also if you messed with your memory timings it can cause it to silently fall back to only one DIMM if it can’t train them all.
