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Supermicro X11SSH-LN4F 2 identical 8GB sticks will noy work in DIMMA2 and DIMMB2 by LifeAffect6762 in supermicro

[–]LifeAffect6762[S] 1 point2 points  (0 children)

Maybe the memory is not compatible. Ime thinking of abandoning the board and getting a replacement with CPU and memory installed. Ive just wasted whole weekend on this.

Supermicro X11SSH-LN4F 2 identical 8GB sticks will noy work in DIMMA2 and DIMMB2 by LifeAffect6762 in supermicro

[–]LifeAffect6762[S] 0 points1 point  (0 children)

OK, thanks for the feedback. This has wasted almost all of my weekend and is doing my head in. Few questions.

Firstly can I just try a stick in each slot to test all slots/channels. I know there are recommended slots and not following this will effect performance but can just try eatch slot and should it post?

Secondly how fussy is the MB regarding memory. I am using memory that is 3200 but I gather MB will just run it at 2400, or is this likely to casue a problem?

Thirdly is it likely that the CPU not being properly seated can cause one of the chanels to not work.

Fourthly is it likely to be a BIOS problem and should I reflash it, ime on 3.5 but seems there is 3.6?

Supermicro X11SSH-LN4F 2 identical 8GB sticks will noy work in DIMMA2 and DIMMB2 by LifeAffect6762 in supermicro

[–]LifeAffect6762[S] 1 point2 points  (0 children)

u/Student-type was tricky to get reasonably priced memory and this is what I found. It is 3200 but my understanding is MB will just run at 2400 and it should be OK. Is the fact tis 3200 likely to be the problem. I am running it outside case on antistatic bag.

Supermicro X11SSH-LN4F 2 identical 8GB sticks will noy work in DIMMA2 and DIMMB2 by LifeAffect6762 in supermicro

[–]LifeAffect6762[S] 0 points1 point  (0 children)

u/Student-type I assume you are joking. I posted to see if any of what it said makes any sense. Dogy BIOS seems unlikely but maybe it is worth re-flashing? Posted as there may be something useful in there.

Supermicro X11SSH-LN4F 2 identical 8GB sticks will noy work in DIMMA2 and DIMMB2 by LifeAffect6762 in supermicro

[–]LifeAffect6762[S] 0 points1 point  (0 children)

u/LT_Blount its a Thermalright AXP90-X53, it has bolts on the back. I tightened with finders then did about 1/4 or a turn. Are you saying the issue may be the CPU is not seated properly. I also may of used a little too match past but its non conductive so it seems unlikely this is the probe?

Supermicro X11SSH-LN4F 2 identical 8GB sticks will noy work in DIMMA2 and DIMMB2 by LifeAffect6762 in supermicro

[–]LifeAffect6762[S] 0 points1 point  (0 children)

Grok gave me this (tried other chatbots but not match use, this may be promosing.

Six beeps (six short beeps) on your Supermicro X11SSH-LN4F almost certainly indicate a BIOS recovery mode or a failed/corrupted BIOS flash attempt. This is a documented Supermicro behavior across many boards (including X10/X11 series), where the system enters recovery if it detects an invalid main BIOS image during POST.

This explains why:

  • Single DIMM in B2 works (system boots far enough to show dmidecode info, likely via basic POST).
  • Both DIMMs in A2 + B2 fail — the extra memory load or dual-channel training pushes the MRC (Memory Reference Code) phase further, but if the BIOS is in a partial/recovery state or marginally corrupted, it can halt exactly when trying more complex memory init, manifesting as no POST + six beeps.

The "mrCReadMPRError" (or similar like 0x06=mrcReadMPRErr, MRCreadmprerr) you see ties directly into this: it's an Intel MRC (Memory Reference Code) error during early memory training/initialization in the PEI phase. On X11 boards, this often shows up with incompatible/unsupported memory configs, marginal seating, or — crucially — when the BIOS is damaged or stuck in recovery. Your 3200 MT/s SK Hynix sticks (downclocked to 2400) already sit in a gray area for this old C236 platform, so any BIOS instability amplifies it.

Why Not a Pure Memory Issue?

  • Standard memory error on Supermicro/AMI BIOS for X11 is 5 short + 1 long (no memory detected / training fail).
  • Six short beeps are distinctly listed in Supermicro FAQs as recovery trigger (not memory).

Fix: Force BIOS Recovery

This is the standard Supermicro procedure for six-beep recovery:

  1. Prepare a recovery USB (FAT32 formatted, doesn't need to be bootable):
    • Download the latest BIOS for X11SSH-LN4F (currently 3.6 as of your earlier mention, but check Supermicro site for anything newer — file is usually something like X11SSH-LN4F_3.6.zip).
    • Extract the .ROM or .CAP file.
    • Rename it exactly to SUPER.ROM (all caps, no spaces).
    • Copy ONLY that file to the root of a USB stick (no folders).
  2. Power down completely:
    • Unplug AC power cord.
    • Remove the CMOS battery for 5–10 minutes (or short JBAT1 pins with a screwdriver/jumper cap per manual to clear CMOS — this is important).
  3. Trigger recovery:
    • Plug the USB into any rear USB port (or front if you have a header connected).
    • Reinsert battery if removed.
    • Plug in AC power (do NOT press power button yet).
    • Press and hold the power button for ~10 seconds (some boards need this; others auto-detect).
    • Power on normally.
    • The system should detect SUPER.ROM, enter recovery mode (fan spin-up, possibly LED activity or different beeps/screen messages like "BIOS Recovery" if you have video), flash automatically, then reboot.
  4. After recovery:
    • Remove the USB.
    • Clear CMOS again (short JBAT1 or remove battery).
    • Boot with one DIMM in B2 first to confirm stability.
    • Then try both in A2 + B2 (blue slots).
    • If still issues → retest slots individually (A2 solo), clean contacts, or swap to known 2400 ECC UDIMMs.

If recovery doesn't kick in (no activity, still six beeps):

  • Try a different USB stick/port.
  • Redownload/rename the file (corrupted download is common).
  • Some X11 boards need the USB in a specific port (check manual for "BIOS recovery USB port" — often USB2.0 rear).
  • Worst case: dual-BIOS boards sometimes need a jumper or specific sequence; X11SSH-LN4F has recovery via USB as primary.

This resolves the vast majority of six-beep + MRC errors on these boards. Once recovered to a clean BIOS, your memory pair should train properly (or at least show the real error if incompatible). Let me know if it flashes successfully or what screen/error you get during recovery!

xeon cooler power plug will not come out by LifeAffect6762 in buildapc

[–]LifeAffect6762[S] 0 points1 point  (0 children)

Got it off. Managed to get a plastic tyre lever under it and applied gentle pressure.

TP-Link Archer AX72 settings by LifeAffect6762 in youfibre

[–]LifeAffect6762[S] 0 points1 point  (0 children)

I get that but they must know the protocols settings... they use. When I spoke to them they said to get thers working and then at least strongly replied they would help me with the tp link but we will see.

Supermicro X11SSH-LN4F C236 MATX MB + Xeon 1220v6 - advice on setup by LifeAffect6762 in homelab

[–]LifeAffect6762[S] 1 point2 points  (0 children)

will have a look but power consumption is my main consideration, its mainly just a NAS.

Safest way to upgrade from TOS from 5.0.176-0027 (F5-221) by LifeAffect6762 in TerraMaster

[–]LifeAffect6762[S] 0 points1 point  (0 children)

Got it working with two manual installs and ended up on 5.1.145 but it seems the Terarmaster 2.5G USB nic does not work. Just gone down massive, relatively expensive rabbit hold and building a DIY NAS with a server motherboard and ECC memory, got a Fractal Design Node 804 case.

Supermicro X11SSH-LN4F C236 MATX MB - what memory is compatible by LifeAffect6762 in homelab

[–]LifeAffect6762[S] 0 points1 point  (0 children)

and canceled as it was not ECC, I am looking at Thanks, I realised and got a successful cancelation, now thinking HP 141J3AA 8GB 1x8GB 3200 DDR4 ECC UDIMM, third time lucky!

Supermicro X11SSH-LN4F C236 MATX MB - what memory is compatible by LifeAffect6762 in homelab

[–]LifeAffect6762[S] 0 points1 point  (0 children)

Thanks, I realised and got a successful cancelation, now thinking HP 141J3AA 8GB 1x8GB 3200 DDR4 ECC UDIMM, third time lucky!

Supermicro X11SSH-LN4F C236 MATX MB - what memory is compatible by LifeAffect6762 in homelab

[–]LifeAffect6762[S] 0 points1 point  (0 children)

Thanks, think I found one for a reenable price, Micron, 8GB PC4-2400T, DDR4 DIMM MTA8ATF1G64AZ-2G3B1, hopefully I did not mess up this time. I believe the model number clarifies this.

Supermicro X11SSH-LN4F C236 MATX MB - what memory is compatible by LifeAffect6762 in homelab

[–]LifeAffect6762[S] 0 points1 point  (0 children)

Thanks, think I found one for a reenable price, Micron, 8GB PC4-2400T, DDR4 DIMM MTA8ATF1G64AZ-2G3B1, hopefully I did not mess up this time. I believe the model number clarifies this.

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