Proxmox is rebooting after adding RAM

[jhr]

Hello,

my Proxmox server had 32GB RAM but it turns out that it's not enough, so I removed all RAM modules and insert a new modules, now I have 64GB RAM, but Proxmox is rebooting after couple of seconds. Memtest not found any problem with RAM. Is there some parameters that should be rewrite or I don't know ? Or I have to reinstall Proxmox ?

Thanks

 

[shrdlicka]

Hi,

that sounds a bit weird. It should just work. Do you see any errors before it reboots? Try if the old RAM module have the same issue.

 

[jhr]

No I cannot see anything strange while it boots. Old RAM works OK.

 

[shrdlicka]

Just to make sure: reinstalling won't help from the error you are describing.

What might help:

• setting the memory clock speed lower
• reseating the memory, maybe something is off there
• boot from a usb drive/cd and produce some load there and see if it happens as well

 

[Neobin]

I would load the bios/UEFI defaults to get rid of the old memory settings. (Do not forget to activate virtualization again, if it is not per default.)
Then I would first check the system stability without loading any memory profile.
If it runs stable without a memory profile loaded, you can try with loading it.

If nothing helps, please provide the exact specifications/model numbers of the mainboard, CPU and the new, as well as the old RAM and how much memory sticks you had before and now.

 

[jhr]

It turned out that all RAM modules are not OK. Maybe all series of this memory modules are bad. I bought 8 modules in total, 4 modules from one seller, 4 modules from different seller. Even memtest could not find any troubles. When I started my server from cold start, it runs OK, until the next warm restart/reboot, then it hangs and in IPMI console I finnaly found some errors.

37662,2022/09/08 06:30:02,OEM,Memory,Uncorrectable ECC @ DIMMB2 - Assertion

37663,2022/09/08 06:30:02,OEM,Memory,Uncorrectable ECC @ DIMMB2 - Assertion

37664,2022/09/08 06:30:02,OEM,Memory,Uncorrectable ECC @ DIMMB2 - Assertion

All eight RAM modules are bad, it sounds almost impossible, but it's true. Never happend to me. Proxmox is not guilty at all, I deeply sorry.