Gigabyte MJ11-EC1 EPYC 3151 Mystery

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Yababakets

New Member
Sep 11, 2024
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Luckily, I have been working for months to answer this and I can give you an answer much more useful than Gigabyte support.

Yes, if you solder the second connector (no small feat) and flash the MJ11-EC0 BIOS, you can have 8 additional PCIe lanes. I have done this and can confirm it works. You can bifurcate x8x8, x8x4x4, and x4x4x4x4.
View attachment 39563

View attachment 39564

View attachment 39565

You must be aware though that there are limitations to bifurcation:

The blog post goes into detail of everything tested, what works, and what doesn't. As others have mentioned, doing this does not make economic sense.

I have 15 extra Amphenol U10-B074-200T if anyone else wants to attempt this. I will sell them at cost (6€/ea) + shipping within EU.



This is incorrect, see above.

View attachment 39566
View attachment 39567



You cannot disable the BMC. In fact, the board will not POST until the BMC has booted.
Thanks for sharing, thats awsome. I want to do it so bad but it is to much trouble. 8 lanes are enough for my needs.
 

nasbuild2

New Member
Oct 27, 2024
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Hi guys, im new here! Im planning on building a home server using this board. Even though i am slowly reading through this thread, and am reading up on this board in general, i just want to ask a stupid question. Is it possible to connect an m2 drive in the relevant slot, 6 hdds (meaning i would occupy the sas connector), a 10gbps ethernet card and a gpu to this board without soldering?
 

Pallee

New Member
Feb 17, 2019
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Is it possible to connect an m2 drive in the relevant slot, 6 hdds (meaning i would occupy the sas connector), a 10gbps ethernet card and a gpu to this board without soldering?
Short answer: Not with a stock MB and BIOS.

What you are trying to do is connect the following: 1) a m.2 drive, 2) a 10gbps nic and 3) a gpu. This would require a BIOS that supports bifrucation of the x8 connector and a miniSAS 8i to PCIe breakout board the also supports bifrucation. To my understanding it *should* technically be possible, but there are several unknowns in this equation. Also, be advised: it may be beyond what is economical when all is tallied up.
 

dreunion61

New Member
Nov 22, 2023
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I have got the board and today while testing I noticed some strange problems. I don't know if that is the supposed behavior.

When I hit Save & Exit in the bios settings the board just hangs in a black screen but doesn't reboot. In the BMC the board is reported as offline (shutdown) but the FAN just spins in a blackscreen. Doing a power on from BMC doesn't help. I have to switch off the PSU every time. It is also the same when I just do Ctrl+Alt+Del in the bios or anywhere in the boot process. It doesn't restart but hangs in black screen.

Another problem: When entering BIOS setting on the top right corner in BMC it just tells me "no available pages", there is just an empty page with the AMI logo and no config entries.

Should I send the board back?


EDIT:

Firmware
Code:
BMCFirmware Information
Active Image ID
1
Build Date
Dec 24 2020
Build Time
16:51:53 CST
Firmware version
12.49.06
BIOSFirmware Information
Product Manufacturer
GIGABYTE
Product Name
G431-MM0-OT
Build Date
09/14/2021
Firmware version
F09
CPLDFirmware Information
Firmware version
MB: NA
 

dreunion61

New Member
Nov 22, 2023
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On the board is a ASPEED AST2500 chip as BMC installed, luckly gigabyte sometimes keep things simple as possible and develope only one firmware for all boards where they used this chip. For every board which used this chip, a seperate device profile is existing in the firmware. So if a new version was released i check the changelog, if the our board are removed from the supported devices. If not, i flash it to the BMC, if the updates was succesfull i will share the link.

Last BMC patch level: 12.61.17, released 15 Nov. 2023
Your URL has been updated to 12.61.21, released in 2024/03/12. Did you test it?
 

dreunion61

New Member
Nov 22, 2023
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When I hit Save & Exit in the bios settings the board just hangs in a black screen but doesn't reboot. In the BMC the board is reported as offline (shutdown) but the FAN just spins in a blackscreen. Doing a power on from BMC doesn't help. I have to switch off the PSU every time. It is also the same when I just do Ctrl+Alt+Del in the bios or anywhere in the boot process. It doesn't restart but hangs in black screen.
OK, I "fixed" that problem by replacing the PSU. The first PSU was a very ancient Enermax EG651P-VE (ATX 1.3).

But the empty BIOS options still remains.

EDIT: Updated BMC to 12.61.21 now, but didn't fixed the empty BIOS page. I hope someone has any idea.
 
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dreunion61

New Member
Nov 22, 2023
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As already said, the EC1 is missing some settings from the EC0 BIOS.

Warning: I advise against flashing your BIOS, it can damage your system. Crossflashing in particular is even more dangerous!
I backed up the BIOS from the EC1 and flashed the current version F02 from the EC0 via AFUWIN.
The system booted up without a problem and the missing settings are now there.
The "SL_SAS Control" option to switch the SFF-8654 4i between PCIe and SATA is there, but I did not test that.
I was interested in setting the PCIe_1, which should be the SFF-8654 8i (or as the silkscreen names it U2_2) to 4x4x4x4.

I connected the SFF-8654 8i port with an Amphenol RSL74 to a generic SFF-8654 8i to 2xM.2 X4 board, equipped with two PCIe 3.0 NVMe drives.

The system was still not able to detect the second drive, so it seems bifurcation still does not work.
In any situation just the one slot worked, and I was not able to get any drive to work in the second slot, even when only one drive was installed.

Maybe the port is really just electrically a X4 port, or the settings from the EC0 BIOS just do not work with the EC1.
Hopefully just my generic SFF-8654 8i to 2xM.2 board does not work, but I doubt that.
Can you enter the BIOS settings from BMC after cross flashing to F02?
 

dreunion61

New Member
Nov 22, 2023
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Sorry for the repeated pushes here. Accessing BIOS from BMC is working under the Chromium Browser. It seems Firefox isn't supported.
 

scorpion1110

New Member
Aug 11, 2024
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iam interesting in this to build a nas using my 32 gb sticks rdiims that i have laying around.

My only concern is how can i get a gpu working? in order to install all the OS/ tools needed?
 

PeterF

Member
Jul 28, 2014
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iam interesting in this to build a nas using my 32 gb sticks rdiims that i have laying around.

My only concern is how can i get a gpu working? in order to install all the OS/ tools needed?
You do not need a gpu! There is already one in the BMC, it has a VGA out put. You need a display that can handle VGA.

Alternatively and easier is to use the remote control in the BMC and start the H5Viewer. You get the display output in a browser window on your desktop computer. The keyboard layouts are a bit limited but it will work. When the OS is installed I use to ssh to a console and manage it that way.

Best Regards
Peter
 
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Bingo600

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Sep 15, 2024
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I just bought two mobo's.
And 4 x Samsung 32GB 2Rx4 PC4-2666V DDR4 RAM M393A4K40BB2-CTD7Q sticks.
Inserted 2 sticks in each (Blue slots)

One worked fine with both BMC & EPYC, and the Samsung Ram.

The other worked w. the BMC , but never finished POST when starting the EPYC.
So i could ie. not enter the "real bios" or boot up anythng, before it would reset it self.
It never detected the Samsung Ram (BMC). Kept saying it had a 16GB Hynix (last detected on a succesfull POST).

"Reset to default settings" via BMC BIOS did nothing, kept looping.

An "Enable Clear Bios" via the jumper to the right of the VGA plug, did the trick.
My steps:
Remove bios battery plug.
"Enable Clear Bios" via the jumper
Wait 2 min.

Restore "Enable Clear Bios" jumper to "Default"
Plug in Bios battery plug.
Power on system.

Now the EPYC fan immediately began to spin (didn't before)
The system detected the two Samsung sticks, and now it completed the POST.

Running a full memtest86 right now.

Morale:

If you have issues (detecting your memory sticks.)
Try to force a "Clear Bios" via the jumper.


Cause ... Guess ...
I always had two sticks inserted in (Blue) , the original server just had one (seen by BMC).
With just one stick the system can run memspeed 2666.
With two it can run max 2400.
If the system started up with two sticks, but was using memspeed 2666 (last known config), my guess is that would have made the system unhappy.

If i had just put in one stick, i might have had a working system from the beginning.
But who knows if i would have gotten in trouble, when inserting the 2'nd stick.
 
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Bingo600

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Sep 15, 2024
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WRT Backplate/IO-Plate

I need to chose a design, and "beg" a friend (he just got a 3D-printer) to make two

1:

2:

Seems like #1 already have a vote here.

Has anyone tried #2 ?


Which one is easiest to make/setup for a 3D-Printer newbie , running linux ??
I have never owned a 3D-printer ...
 

etorix

Active Member
Sep 28, 2021
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#1 is a perfect fit. #2 is less refined (look at the VGA cut hole).
To a printer I guess the two go just the same.
 
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benis

New Member
Nov 5, 2024
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I am very glad to find you good and curious people!

I am currently playing around with this interesting and cheap board. I have a few things on my test/fun to do:
1.) Can rebar work? Would be great if getting an Intel Arc gpu.
2.) Design a fan adapter for 120 mm fan - I have a Noctua slim 120 mm that could cover a bit more of the board than the 92 mm fan adapter solution
3.) I am waiting on a 3.8 litres case (this), build a tiny tiny server
4.) Wondering how to power the PCIE adapter that you can buy, need to look into the connector
 

etorix

Active Member
Sep 28, 2021
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2/ A 60 mm fan on the heatsink is more than enough. If you want to cool the whole system with a 120 mm, I would fix it directly to the case, blowing on everything. (Noctua rubber standoffs in the ventilation holes?)
4/ The adapter is to a standard 24-pin ATX.
 

benis

New Member
Nov 5, 2024
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2/ A 60 mm fan on the heatsink is more than enough. If you want to cool the whole system with a 120 mm, I would fix it directly to the case, blowing on everything. (Noctua rubber standoffs in the ventilation holes?)
4/ The adapter is to a standard 24-pin ATX.
1.) Sure, but pretty nice to have one fan that cools cpu, ram, nvme and vrm - while spinning very slow. I think it will look neater to fix it to the heatsink.

2.) Ah, the adapter is so big. Hum. Might be tight in the case or I can turn it upside down. Is it CEACENT CNS41CX16W that people use?
 

etorix

Active Member
Sep 28, 2021
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Ah I thought you were referring to the power adapter…
If you want to use the 8 PCIe lanes from the SlimSAS 8i you'll likely need a micro-ATX case to cleanly fit the adapter with the PCIe slot and the cable mess.
 

marco-mh

New Member
Nov 4, 2024
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Hello, sorry for the bad English, it is translated with Google. :)
I'm also in the process of setting up a NAS with this board.
My hardware:
- MJ11-EC1
- RAM 4x HP Hynix 32GB 2Rx4 PC4-2400T Server RAM ECC DDR4 HMA84GR7AFR4N-UH 809083-091
- 2x 12TB Seagate, 1x 4TB WD, 1x M2 WD 1TB, 1x Samsung SSD
- Older 400W ATX power supply (new one is on the way)

The RAM is recognized as 32 GB but at 2133 MT/s. The RAM is in the list, but without UH...
When booting from Unraid I get the following errors.

IMG_0058.jpg

Sometimes I get kernel panic, sometimes it boots but then crashes again with the following errors.

IMG_0055.jpg
IMG_0057.jpg
I also saw ECC errors, but I can't do anything with them.

IMG_0059.jpg
I've already read this post up to page 13 and the last 3 pages, but haven't found a solution.
Can someone help me with that?
Thank you very much in advance.
Greetings Marco
 
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