MPG X670E Carbon M.2 Intermittently Not Detected

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chowgar

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Hello. I hope someone can help. I built my system a week ago and other then this issue rearing its head everything has been working very well indeed.

I find that on every second or third boot into Windows 11 my M2_2 NVME, Samsung 990 Pro 2TB is not detected. The primary M2_1, Samsung 980 Pro 1TB containing the OS, is always detected fine. I tried booting into the bios 5 times last night and the 990 Pro always shows, possibly ruling out a slot connectivity issue?

I'm more inclined in believing this is a BIOS bug or a problem with the 990 Pro SSD.
 
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ravenomega5154c02d3 said:
Hello, I was interested in buying this board, is this still an on going issue with the M.2 detection? I'm running an SK Hynix P41 and 3X WD SN770's
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I'm still using the BIOS from February 2024 on my MPG B650 CARBON WIFI, and my problems have been resolved when I gave up and replaced my WD drive with Crucial.

I see that MSI has released a new non-beta BIOS for my MB just a few days ago, so I might try it out soon, as I'm interested to see if it can decrease the RAM-training time. I doubt it will have any significant effect on M.2 detection, but who knows.

BIOS changelog:
- AGESA ComboPI 1.1.8.0 updated.
- Optimize the time for memory training
- Fixed the problem of DMI data loss when changing CPU or installing DMI information for the first time.
 
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To reply to my own message posted previously, I've updated BIOS on my mobo to 7D74v1D, because I was keen to see improvements to the RAM training time. I wish I shouldn't have.
Previous BIOS (February 2024): 38.75 s (cold boot), 66.64 s (restart)
New BIOS (June 2024): 75 s (cold boot), 104.5 s (restart)

That's almost a 100% increase! I mean, this BIOS even had "Optimize the time for memory training" in the changelog!! I expected the training time to decrease, not to increase even further.
Then I had a look in the forums, and people are reporting similar issues on many other MSI AM5 mobos (e.g. Tomahawk, Pro, etc.), and waiting for MSI for a fix.
 
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Installed the new beta bios today, system start up error with windows.
Screen turns off , had to press escape and or mouse button to activate windows., afterwards when sliding over the news feed it shows it loads (blue cirlce) and freezes.
Had to press reset button.
CPU display on cooler now shows 0,00 GHZ.
Will install the old bios again, 1g1, worx best for me.
 
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Yeah, I'm thinking about downgrading the BIOS back to 7D74v1B (February 2024) as well.
But I'm not sure how safe it is. Last time I tried downgrading the BIOS on a motherboard, it bricked it. And it was an MSI mobo. This was at least 10 years ago, but it still happened :rolleyes:
 
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I’m still using bios 7D70v1E, anyone tried the newest? Regards to the M.2 issue, this bios works best for me atm. I'm only struggling with soft boots sometimes. So thinking of updating but if the M.2 issue is back.. I’m not doing it
 
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iStephano said:
I’m still using bios 7D70v1E, anyone tried the newest? Regards to the M.2 issue, this bios works best for me atm. I'm only struggling with soft boots sometimes. So thinking of updating but if the M.2 issue is back.. I’m not doing it
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Same BIOS for me -- I get a M.2 'non-detection' every 4th or 5th cold boot with that version. Curious to hear whether newer versions have tackled the issue.
 
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Yeah I’m curious as well, I could of course update and see how it goes. But I really don’t want to setup my bios again if it turns out to be for nothing. (I have done it so many times before already)
 
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Here is something worth trying which I will try! See config below:

Option(1):

PCE_E1 populated with dedicated GPU (RTX4090)
M2_1 Populated Gen4 drive
M2_2 empty
M2_3 Populated Gen4 drive
M2_4 Populated Gen4 drive

By leaving M2_2 empty may be a fix as we know M2_2 and PCI_E2 is linked to PCI_E1. If M2_2 or PCE_2 is populated then PCE_E1 is dropping from x16 to x8.

Option(2):

PCE_E1 populated with dedicated GPU (RTX4090)
M2_1 Populated Gen3 drive
M2_2 empty
M2_3 Populated Gen4 drive
M2_4 Populated Gen4 drive

Gen3 drives seems to be the safe spot on AM5.
 
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Alan J T said:
This is not Correct

Only if PCI_E2 is populated will PCI_E1 will be set to x8
Click to expand...
"If you install an NVMe drive into the M.2_2 slot, it could share lanes with the PCI-E1 slot, particularly if the M.2_2 slot is wired to the CPU’s PCIe lanes". Is this info false?
 
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frieren said:
"If you install an NVMe drive into the M.2_2 slot, it could share lanes with the PCI-E1 slot, particularly if the M.2_2 slot is wired to the CPU’s PCIe lanes". Is this info false?
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Not on x670e Carbon.

It might be true for x870e Carbon, released yesterday. (PS: That is one of the reasons I don't like x870e Carbon)
 
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@Alan J T Could it be a thing with x870e where populated M2_2 may limit PCI-E1? I'm looking at multiple sources and trying to figure out weather x870e is a good deal in case I can exchange it with my current x670e. Also, maybe M2 intermittence bug will be magically solved on x870e while using Gen4/Gen5 drives.
 
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Guys, seeing just how busy AMD is with Zen 5, I wonder if they will ever recognise/fix the issue.

So my suggestion to you all is to replace your problematic M.2 SSDs with other ones which are apparently more "compatible" with AM5, like Crucial. The brand shouldn't matter, but apparently it does.

I replaced my M.2 SSDs with Crucial ones and ALL detection issues have disappeared 100%. I have two Crucial Gen4 SSDs in my system since April this year (one P5 Plus and one T500, both 2TB capacity), and I had zero detection issues. I can't even reproduce the problem anymore, so I consider it solved.

Black Friday is coming next month, so have a think about it.

Just bear in mind that my mobo is the B650 CARBON (not X670E Carbon).
 
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I think that M.2 SSD intermittence bug may not just be a factor of SSD brand alone, it could be RAM or even something else. My last effort to fix it is to update BIOS to 7D70v1J (august 2024) and use Gen3 M.2 SSD as a boot drive. Once it's all done, I will report back.
 
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frieren said:
@Alan J T Could it be a thing with x870e where populated M2_2 may limit PCI-E1? I'm looking at multiple sources and trying to figure out weather x870e is a good deal in case I can exchange it with my current x670e. Also, maybe M2 intermittence bug will be magically solved on x870e while using Gen4/Gen5 drives.
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Umm Hard call
Compared side by side to the X670E Carbon the X870E is a downgrade IN PCIE and M.2 Configs
Installing an M.2 In M2_2 will limit PCI_E1 to 5x8 instead of 5x16 PCI_E2 is PCIE 5.0X4 and no longer PCIE 5.0x8 as it is on the X670E
You have also lost two Sata Port and if you wish to use 5.1 or 7.1 surround sound you need to use both Front and Rear Sound jacks, And that was just a quick look at the board
But you do get a New BIOS, Click Bios X with AI
 
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frieren said:
I think that M.2 SSD intermittence bug may not just be a factor of SSD brand alone, it could be RAM or even something else. My last effort to fix it is to update BIOS to 7D70v1J (august 2024) and use Gen3 M.2 SSD as a boot drive. Once it's all done, I will report back.
Click to expand...
Thats the strange thing I have tried 4 different M.2 Brands in M.2_2 and never had a problem
SO yep could be a Hardware or a CPU glitch

I have used a Validated by AMD R5 7600X
and a Retail R7 7700X
And then there is the Why is it mostly Samsung and WD that have the detection problem
And it's not like I'm not fully loaded with SSD
The only port not in use is PCI_E2 as it is under the 4090
drives.jpg
 
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frieren said:
I think that M.2 SSD intermittence bug may not just be a factor of SSD brand alone, it could be RAM or even something else. My last effort to fix it is to update BIOS to 7D70v1J (august 2024) and use Gen3 M.2 SSD as a boot drive. Once it's all done, I will report back.
Click to expand...
Update! It seems I found something new what could be the real reason behind intermittence bug (laggy Windows 10) - RTX4090's nVidia High Definition Audio driver(!) I disabled it for now. It could be that MSI x670e and M2 has nothing to do with this particular bug (laggy Windows 10).

Side note. Random laggy Windows 10 start is the only bug left for now, otherwise MSI x670e works just great!
 
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