Hi, Please CC the list! maluyao napsal(a): > My blade server is SuperMicro. The motherboard is B7DBE. > > While run "i2cdump 0 0x2f" , it show me : > > No size specified (using byte-data access) > Error: Could not open file `/dev/i2c-0' or `/dev/i2c/0': No such file or > directory You dont have device nodes in /dev/ for i2c Can you create them? crw-rw---- 1 root root 89, 0 2009-02-07 19:37 /dev/i2c-0 > I update w83793.c from kernel-2.6.28 and the proble still occur. try to unload the "thermal" module from acpi. rmmod thermal sensors > while I try to compiling w83793.c form 2.6.27.18. It show me too many > error. I thinks something conflict with kernel-2.6.18-128.el5 . Yes this is expected. You need to use version which is in the kernel. Rudolf