Hi Rudolf, > Theoretically there could be 4 temps for one physical CPU. Two for each core > * 2 = 4. And because your CPU is dualcore, and your CPU supports only 1 > temperature/core so you see two of them ;) I hope I clarified that. Yes, I see from the k8temp.c static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0); static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 0, 1); static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 1, 0); static SENSOR_DEVICE_ATTR_2(temp4_input, S_IRUGO, show_temp, NULL, 1, 1); So, temp1 == CPU#0 Core#0 Temp #0 temp2 == CPU#0 Core#0 Temp #1 temp3 == CPU#0 Core#1 Temp #0 temp4 == CPU#0 Core#1 Temp #1 My Dual Core Opteron (265) only reports temp1, and temp3. That is OK. One temperature per core. What would it look like if I add a second physical processor in the second socket? Would I get the same lmsensor names repeated? > So all in all, this works fine. Lets check the i2c bus related problem. And > wait for some logs from you ;) Here are the logs. It looks like a timeout problem.... syslog:Nov 25 08:31:58 discover kernel: i2c /dev entries driver syslog:Nov 25 08:31:58 discover kernel: i2c_adapter i2c-9191: ISA main adapter registered syslog:Nov 25 08:31:58 discover kernel: i2c_adapter i2c-0: nForce2 SMBus adapter at 0xa000 syslog:Nov 25 08:31:58 discover kernel: i2c_adapter i2c-1: nForce2 SMBus adapter at 0xa040 syslog:Nov 25 08:31:58 discover kernel: i2c_adapter i2c-0: SMBus Timeout! (0x10) syslog:Nov 25 08:31:58 discover kernel: i2c_adapter i2c-1: SMBus Timeout! (0x10) syslog:Nov 25 08:31:58 discover kernel: i2c_adapter i2c-9191: Driver w83627hf registered syslog:Nov 25 08:31:58 discover kernel: i2c_adapter i2c-0: SMBus Timeout! (0x10) syslog:Nov 25 08:31:58 discover kernel: i2c_adapter i2c-1: SMBus Timeout! (0x10) syslog:Nov 25 08:31:58 discover kernel: i2c_adapter i2c-9191: Driver w83781d-isa registered syslog:Nov 25 08:31:58 discover kernel: i2c_adapter i2c-0: SMBus Timeout! (0x10) syslog:Nov 25 08:31:58 discover kernel: i2c_adapter i2c-1: SMBus Timeout! (0x10) syslog:Nov 25 08:31:58 discover kernel: i2c_adapter i2c-1: SMBus Timeout! (0x10)