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Are you sure you have ECC-capable DIMM installed? What does find /sys/devices/system/edac/mc/mc0/csrow* -maxdepth 1 -type f -exec grep --color . {} + rep

• oneshtein 1y ago
  AFAIK, I have 2x DDR5 non-ECC memory (`dmidecode --type 17` says Samsung M425R1GB4BB0-CQKOL). Your command tells about SECDEC (single bit error correction, double bit error detection). /sys/devices/system/edac/mc/mc0/csrow0/ce_count:0 /sys/devices/system/edac/mc/mc0/csrow0/ch0_dimm_label:MC#0_Chan#0_DIMM#0 /sys/devices/system/edac/mc/mc0/csrow0/size_mb:8192 /sys/devices/system/edac/mc/mc0/csrow0/ch0_ce_count:0 /sys/devices/system/edac/mc/mc0/csrow0/ue_count:0 /sys/devices/system/edac/mc/mc0/csrow0/mem_type:Unbuffered-DDR3 /sys/devices/system/edac/mc/mc0/csrow0/edac_mode:SECDED /sys/devices/system/edac/mc/mc0/csrow0/ch1_ce_count:0 /sys/devices/system/edac/mc/mc0/csrow0/ch1_dimm_label:MC#0_Chan#1_DIMM#0 /sys/devices/system/edac/mc/mc0/csrow0/dev_type:x16 > find /sys/devices/system/edac/mc/mc0/csrow* -maxdepth 1 -type f -exec grep --color . {} + It looks like DDR5 supports SECDEC by default. :-/