Hi i2cdump will produce all 0 except 0xA register that will be 0xFF I can try to set manual speeds in BIOS and see what is programmed. Do you want me to do this? (I dont need it by myself but maybe you can improve the detection stuff) This is when I wrote to cpu0_vid some VID voltage... I will probe file /dev/i2c-0, address 0x37, mode byte Continue? [Y/n] 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef 00: 0e 00 00 00 00 00 0f 00 00 00 ff 00 00 00 00 00 ?.....?......... 10: 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e ???????????????? 20: 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e ???????????????? 30: 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e ???????????????? 40: 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e ???????????????? 50: 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0e 0c ???????????????? 60: 0c 0c 0c 0c 0c 0c 0c 0c 0c 0c 04 04 04 04 04 04 ???????????????? 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ REG0 changed and REG6 became 0xF Regards Rudolf > > Bye, > Sebastian >