Thank you very much for your quick answer ! I tried the "force_subclients=0,0x2c,0x4a,0x4b"-option from ticket #840 yesterday and (of course - thats my fault) that did not work (wrong chip address). "modprobe w83781d force_subclients=0,0x2a,0x4a,0x4b" works and both sensors are detected: # sensors w83782d-i2c-0-29 Adapter: SMBus PIIX4 adapter at 0580 Algorithm: Non-I2C SMBus adapter VCore 1: +1.48 V (min = +1.37 V, max = +1.52 V) ALARM VCore 2: +1.24 V (min = +1.37 V, max = +1.52 V) +3.3V: +3.36 V (min = +3.13 V, max = +3.45 V) +5V: +5.07 V (min = +4.72 V, max = +5.24 V) +12V: +12.08 V (min = +10.79 V, max = +13.19 V) -12V: -1.03 V (min = -13.21 V, max = -10.90 V) -5V: +2.84 V (min = -5.26 V, max = -4.76 V) V5SB: +5.11 V (min = +4.72 V, max = +5.24 V) VBat: +3.32 V (min = +2.40 V, max = +3.60 V) fan1: 6136 RPM (min = 3000 RPM, div = 2) fan2: 6617 RPM (min = 3000 RPM, div = 2) fan3: 7336 RPM (min = 3000 RPM, div = 2) temp1: +44?C (limit = +60?C, hysteresis = +50?C) sensor = 3904 transistor temp2: +18.5?C (limit = +60?C, hysteresis = +50?C) sensor = 3904 transistor temp3: +18.0?C (limit = +60?C, hysteresis = +50?C) sensor = 3904 transistor vid: +1.45 V alarms: Chassis intrusion detection ALARM beep_enable: Sound alarm disabled w83782d-i2c-0-2a Adapter: SMBus PIIX4 adapter at 0580 Algorithm: Non-I2C SMBus adapter VCore 1: +0.01 V (min = +0.00 V, max = +0.00 V) ALARM VCore 2: +0.01 V (min = +0.00 V, max = +0.00 V) ALARM +3.3V: +0.01 V (min = +3.13 V, max = +3.45 V) +5V: +5.07 V (min = +4.72 V, max = +5.24 V) +12V: +0.04 V (min = +10.79 V, max = +13.19 V) -12V: -14.86 V (min = -13.21 V, max = -10.90 V) -5V: -7.68 V (min = -5.26 V, max = -4.76 V) V5SB: +0.02 V (min = +4.72 V, max = +5.24 V) VBat: +3.36 V (min = +2.40 V, max = +3.60 V) fan1: 0 RPM (min = 3000 RPM, div = 2) fan2: 0 RPM (min = 3000 RPM, div = 2) fan3: 0 RPM (min = 3000 RPM, div = 2) temp1: +127?C (limit = +60?C, hysteresis = +50?C) sensor = 3904 transistor temp2: +127.5?C (limit = +60?C, hysteresis = +50?C) sensor = 3904 transistor temp3: +127.5?C (limit = +60?C, hysteresis = +50?C) sensor = 3904 transistor vid: +0.00 V alarms: beep_enable: Sound alarm disabled # Values from BIOS: CPU1 - Temp: 37 - 38 ?C CPU2 - Temp: 37 ?C System - Temp: 42 ?C CPU1 - Fan: 3750 - 3792 RPM CPU1 - Fan: 3924 - 4017 RPM Chassis - Fan: 4326 - 4500 RPM VCore: 1.47 - 1.48 V Vcc +3.3V: +3,36 - 3.37 V Vcc +5V: +5.08 V Vcc +12V +12.54 V Comments: 1.) w83782d-i2c-0-2a does not seem to produce any usable values (with different sensor types) 2.) w83782d-i2c-0-29 gets close(r) to the real values with sensor 3904 transistor (2) 3.) fan values are ~ 200%, temp2 and temp3 are ~ 50% of real values (wrong compute lines?) 4.) temp1 probably is the correct system temp 5.) -12V and -5V seem to be measured by the same transistors as temp2/3 (values change if you change sensor type) I'll investigate further on that next week and provide feedback. Thank you, Hajo