T700 NVME PCI 5 hanging

[tomcoleman]

so after sending extensive logs, images and scaernios i have tried i get this insulting responce from ASUS "technical support after waiting 24hrs i get....

Thank you for contacting ASUS Product Support.

My name is Mark Galen C. and it's my pleasure to help you with your problem.

In accordance with the escalated case that you have with us, as our Technical support department provided this response and stated that to Please install Gen 5 to M.2_1 slot.

Best regards,
Mark Galen C.

i mean WTF!!!! - really... no wonder jaystwocents ditched ASUS, they cant even read a email.

[tomcoleman]

as per the manual on page 1-8 PCIEX16_1 supports x16 PCIEX16_2 is only 8x

So GPU has to be slot one for max bandwidth.

I changed the settings in the BIOS M.2_1 link mode AUTO > GEN5 & M.2_2 AUTO>GEN5 and PCIEX16_1 AUTO > GEN 4

This enabled the system to boot and i installed windows.

However its very LAGGY speeds up/slows down doesnt feel snappy at all like my PCI4 gen 4 system.

Deffo some sort of BIOS setting here.

If i crystaldiskMark i get 12gb/s read but doesnt display any write, however i can write to the disk with files

[tomcoleman]

so after more investigation and hard setting all BIOS settings to GEN5 or GEN4 where required, i got the system to install and boot.

After a clean install of windows (no drivers loaded) if i install crystaldiskmark i get 12.5gb/s read and 9.8GB/write - NOT bad but not the 12/11 i was expecting.

However if i load the Crucial NVME driver i get 12.5GB read but no write, it keeps bombing out if i watch it in task manager it does a few gb/s then dies 

SO is this a driver issue or when the correct driver is loaded its a BIOS setting now thats limiting something.?!

[saloei]

The bios settings must be correct or you wouldn't get those results. The problem looks to be a Crucial driver issue. 

[Silent_Scone]

Hi,

Have you tried with EXPO disabled, as someone suggested here (I notice you've tailed in on the thread with your problem). By the looks of it, it looks like a potential issue either with the Crucial FW/Driver or AMD specifically. I have the Extreme here and a 1TB T700 so will see if I can replicate when I get a moment.

[tomcoleman]

forgot to add EXPO is off (default BIOS settings) i have tried EXPO I and EXPOII also.

[tomcoleman]

so the issue gets stranger...

I flahsed back to 1709 from 1602.

Now my NVME does not display in the BIOS i changed a bunch of settings no joy. HOWEVER, if i boot of a Windows USB install stick i can see the M2 drive and install windows to it (so its clearly there and i can write/read to the M2) when the PC reboots after installing windows to the NVME it goes back to the BIOS automatically as no drive detected so therefor can not load windows and in circles we go....

BUT the backup settings you gave me make it even stranger.... So i then loaded your backup BIOS settings and VOLLA the m2 is now detected!!!! BUT you have so much custom configuration around memory/cpu etc i cant boot my system as too much custom items.

I tried to change back the OC/Ai overlcoking to auto but i must be missing something.

However in a nutshell there must be a setting in your BIOS cfg that is making th T700 work and detect.

I have a feeling if you can remove your CPU/Memory OC's and make the backup file more generic it could fix my problems maybe,?! 

Very strange that i didnt have any issue with drive detections on 1709, then since flashing to 1602 and back to 1709 now my drive doesnt show at all in the BIOS yet i can install to it just cant boot from it as not visable even when i tried enabling legacy mode.

Feels like something in your settings could be the key to this problem.

I see there is a BETA 1802 BIOS which is 32mb in size vs the 1709 which is 13mb in size, however if i flash to that not sure i can flash back

the rabbit hole deepens

[Silent_Scone]

If the profile helps then the issue probably stems from system instability. I don't have a Hero here so can't amend the profile myself. Make sure everything is set to auto under the DRAM Timing Configuration Menu, and disable PBO.

[tomcoleman]

ok i couldnt get your profile to work, just kept hanging my system.

I reset everything again, and found some things out.

I put the T700 NVME into another PC (PCI 4) got it booted and installed Crucial Storage Excutive.

This offered a firmware update to the drive which i installed. (no firmware offerings on their support website for the T700)

So formated and secure erased the drive. Putting the drive back in the X670E and hard settings m.2_1 to PCI-GEN4 this enabled the BIOS to then see the drive and was shown in BIOS on mutiple reboots cold and warm so i knew it was stable.

Installed windows and all AMD drivers from Asus website. Speed testing in CrystalDisk Mark gave me a read of 7500mb/s and a write of 1GB/s again good reads but poor writes.

If i then changed the M.2_1 to PCI-GEN 5 mode, the drive disapears from the BIOS and windows wont boot, no matter what BIOS settings i change around it, it just wont see the drive in GEN5 mode (but it was seeing it a few days ago but now its completly dropped off)

So currently i have a Gen5 drive in a Gen5 motherboard thats hardset to Gen4 speeds, which arent even at full gen4 speeds...

alittle stuck now on what to try next.

I have a ticket also open with Crucial to see what they think.

On their Crucial Storage executive software i also ran a full test of read/write which came back as a pass, all smart info and drive tests from their software show no errors.

[Silent_Scone]

Try this one:

[tomcoleman]

thanks for this, i have some more findings. Crucial came back to me on a support email which i replied with....

Support,

I’m an ASUS customer and have a X670E motherboard as you know.

My findings from testing over the last few days.

• BIOS in PCI mode GEN4 – T700 works and is stable and I get GEN 4 speeds (7000mb/s R+W)
• BIOS in PCI mode GEN5 – T700 booted into windows was very unstable (managed to get ONCE gen5 speeds) then after multiple EVENT viewer errors and bluescreens windows failed to boot.

As you can see from the screenshots in event viewer the drive is showing a bunch of DISK and NVME errors. Yet in Crucial Executive the drive passes all tests and no S.M.A.R.T errors.

I was able to use the drive-in windows in GEN5 mode for around an hour before the errors got greater and greater and 4 blue screens finally corrupted windows.

If I put the drive back into GEN4 mode it works fine, with no event viewer errors or crashes (so far! 3hrs testing)

So wouldn’t that point to it either being the drive doesn’t like being in GEN5 mode either due to a firmware/compatibility issue with either the drive controller or BIOS. Its strange the drive works in GEN5 for a while but is super buggy.

On top of my findings you have pointed out to contact Asus about the issue being a BIOS problem HOWEVER, using with a different brand and different manufacture are getting the same results as me. Would be unlikely that 2 different manufactures are giving the same errors? – could you explain that?

The thread with the information is here. MSI MEG X670E GODLIKE - M.2 SSD Crucial T700 not working in PCIe 5.0 Mode | Page 3 | MSI Global Engl...

If you read the 3 pages you will find its not just me with the issue, but specially T700 owners on different platforms.

Especially post #50 on that thread is exactly what I’m experiencing.

So in conclusion we have multiple different branded motherboard uses having the same issue as me all using T700 drives….?!

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I think this is either a motherbord BIOS compatiblity problem (maybe the AGESA code is poor) or the PCI5 controller on the NVME isnt talking the same language to the motherboard.

Is your NVME on PACR5102 btw?