>> # head /proc/cpuinfo This shows your system is the workstation version of Sapphire rapids. I don't think we did any validation of the EDAC driver against this model. > # dmidecode -t 17 You have just one 16GB DIMM, and EDAC found that. So despite the messy warnings, EDAC should be working for you. > # lspci I didn't dig into this. Qiuxu - can you compare this against a server Sapphire rapids? Maybe it has some clues so the EDAC driver will know not to look for non-existent memory controllers. > please check through this url, > https://drive.google.com/drive/folders/199k3BX6IipNYCDfuMGy8W26ZtYRDIYZr?usp=sharing Thanks for all the details. -Tony