[lm-sensors] ASUS Sabertooth Z77 / nct6775.ko report

Dmitriy Pinchukov me at shapirus.net
Wed May 23 11:37:30 CEST 2012


Hi,

Got a new ASUS Sabertooth Z77 mobo recently and found out that lm-sensors didn't support
anything but the core temperatures and also a couple ones from the
'acpitz-virtual-0' device. Trying the trunk version of sensors-detect didn't help.

I then searched and finally found the shiny new 'nct6775' driver. Compiled and loaded it successfully (linux 3.4.0 x86_64):

[ 1082.377370] nct6775: Found NCT6779D chip at 0x290

Here's how my sensors output looking now (lm-sensors 3.3.2 from Debian wheezy/sid):

acpitz-virtual-0
Adapter: Virtual device
temp1:        +27.8°C  (crit = +106.0°C)
temp2:        +29.8°C  (crit = +106.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +45.0°C  (high = +85.0°C, crit = +105.0°C)
Core 0:         +44.0°C  (high = +85.0°C, crit = +105.0°C)
Core 1:         +45.0°C  (high = +85.0°C, crit = +105.0°C)
Core 2:         +43.0°C  (high = +85.0°C, crit = +105.0°C)
Core 3:         +43.0°C  (high = +85.0°C, crit = +105.0°C)

nct6779-isa-0290
Adapter: ISA adapter
in0:                    +1.00 V  (min =  +0.00 V, max =  +1.74 V)
in1:                    +1.03 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in2:                    +3.42 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in3:                    +3.42 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in4:                    +1.02 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in5:                    +2.04 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in6:                    +1.49 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in7:                    +3.41 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in8:                    +3.36 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in9:                    +1.06 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in10:                   +1.49 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in11:                   +1.49 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in12:                   +0.25 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in13:                   +0.18 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in14:                   +1.49 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
fan1:                     0 RPM  (min =    0 RPM)
fan2:                  1142 RPM  (min =    0 RPM)
fan3:                  1011 RPM  (min =    0 RPM)
fan4:                   922 RPM  (min =    0 RPM)
fan5:                     0 RPM  (min =    0 RPM)
SYSTIN:                 +36.0°C  (high =  +0.0°C, hyst =  +0.0°C)  ALARM  sensor = thermistor
CPUTIN:                  +0.5°C  (high = +80.0°C, hyst = +75.0°C)  sensor = thermistor
AUXTIN0:                 +0.0°C    sensor = thermistor
AUXTIN1:                 +0.0°C    sensor = thermistor
AUXTIN2:                 +0.0°C    sensor = thermistor
AUXTIN3:                 +0.0°C    sensor = thermistor
PCH_CHIP_CPU_MAX_TEMP:   +0.0°C
PCH_CHIP_TEMP:           +0.0°C
PCH_CPU_TEMP:            +0.0°C
PCH_MCH_TEMP:            +0.0°C
cpu0_vid:              +0.000 V
intrusion0:            ALARM
intrusion1:            ALARM

Here's my thoughts:

- only 5 fans are shown whereas the mobo has 8 fan connectors (two of which are 3-pin, the rest are 4-pin);
- this board has a lot of temperature sensors (the windows asus monitoring utility shows around 8 or 9 of them I think), but only the SYSTIN seems to be reported correctly by this driver, the rest are zero;
- cpu0_vid has zero value as well;
- min/max values are zero for some of the sensors and the ALARM status is reported erroneously there;
- fan control *does* work via the /sys/devices/platform/nct6775.656/pwm* interface, both in PWM and DC control modes; I can reduce their speed and fully stop them.

What do you guys think of this? My current sensors-detect output is in the attachment and is also available at http://pastebin.com/BUs8e0sn. I also tried the 'lm75' and 'ds1621' drivers that it suggested, but that didn't change the output of sensors and there weren't any messages in dmesg when I loaded them.

I will gladly present any additional info that might help to debug the issue or improve the
driver.

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