Thanks for your reply, Jean. > Am 12.11.2019 um 11:18 schrieb Jean Delvare <jdelv...@suse.de>: > > Hi Alex, > > On Wed, 2019-11-06 at 15:07 +0100, Axel Rau wrote: >> I have a new install of Ryzen 7 3700X on a Asrock X470D4U motherboard. >> The OS is FreeBSD 12.1. >> I try to find out, if ECC enabled. >> >> On a Xeon E5 CPU, dmidecode shows Total Width: 72 bits und Data Width: 64 >> bits. >> 72-64=8; These are the 8 parity bits. > > Sounds right. > >> The Ryzen CPU shows Total Width von 128 Bit und Data Width: 64 bits. >> >> Is this a bug in the Bios or in demidecode or is ECC not enabled? > > I've seen this only once before, definitely looks like a BIOS bug. ECC > is typically +8 bits for 64-bit wide modules. You may want to check if > a BIOS update is available for your system, and if not (or if it > doesn't solve the problem), report to the manufacturer.
Bios version is recent. My inquiry was not answered.
Their specs says:
“For Picasso Ridge and Raven Ridge CPUs, ECC is only supported with PRO CPUs.“
But this is a "Matisse Ridge“ CPU.
https://www.asrockrack.com/general/productdetail.asp?Model=X470D4U#Specifications
> Definitely a reference of ECC memory. decode-dimms should say that too.
> I think your best option is to enter the BIOS setup screen and check
> the memory configuration there, maybe there's a configuration option to
> enable/disable ECC, or at the very least it should tell you whether ECC
> is enabled or not.
I’m a bio novice and still looking for reference info.
The only related option, I recognized was:
Advanced -> AMD CBS -> UMC-> DDR4 -> Common RAS -> ECC conf -> DRAM ECC
The setting was „auto". Changing this to „enabled“, makes no difference.
>
> As a side note, I am collecting SMBIOS 3.2 implementations for my
> dmidecode test suite, so I would appreciate if you could run "dmidecode
> --dump-bin" on your system and send me the generated file (privately).
Done.
Axel
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