[lm-sensors] Bad readouts on ASUS M2V VIA VT8237A

[lm-sensors] Bad readouts on ASUS M2V VIA VT8237A

[Drew Vogel]

I ran sensors-detect, accepting all of the defaults (because they seemed
correct, not because I was clueless) but the readouts I get from
`sensors` are obviously off. Here is the output:



# sensors
k8temp-pci-00c3
Adapter: PCI adapter
Core0 Temp:
             +30?C
Core1 Temp:
             +37?C

it8712-isa-0d00
Adapter: ISA adapter
VCore 1:   +1.31 V  (min =  +0.00 V, max =  +4.08 V)
VCore 2:   +4.08 V  (min =  +0.00 V, max =  +4.08 V)   ALARM
+3.3V:     +3.31 V  (min =  +0.00 V, max =  +4.08 V)
+5V:       +4.89 V  (min =  +0.00 V, max =  +6.85 V)
+12V:     +11.90 V  (min =  +0.00 V, max = +16.32 V)
-12V:      +3.93 V  (min = -27.36 V, max =  +3.93 V)   ALARM
-5V:       +4.03 V  (min = -13.64 V, max =  +4.03 V)   ALARM
Stdby:     +6.85 V  (min =  +0.00 V, max =  +6.85 V)   ALARM
VBat:      +3.31 V
fan1:     35526 RPM  (min =    0 RPM, div = 2)
fan2:        0 RPM  (min =    0 RPM, div = 2)
fan3:        0 RPM  (min =    0 RPM, div = 2)
M/B Temp:    +36?C  (low  =    -1?C, high =  +127?C)   sensor = thermistor
CPU Temp:    +42?C  (low  =    -1?C, high =  +127?C)   sensor = thermistor
Temp3:      +128?C  (low  =    -1?C, high =  +127?C)   sensor = disabled



k8temp-pci-00c3 should be my NVidia 7600GT card and those seem correct.
On it8712-isa-0d00 the +voltage readings seem perfect but the -12V and
-5V voltages read out as positive values. AFAIK, this is impossible,
because the system wouldn't be stable enough for me to run the sensors
program (must less install the operating system in the first place). The
fan1 (CPU fan) reading is clearly wrong because at 35k RPM it should be
melting the plastic housing.

The system is slightly unstable, but not consistently so. It is an
Athlon64 X2 system running Debian AMD64 (sid). All of my compatibility
problems are with closed-source software (e.g. Sun's 64bit JRE 1.5
segfaults) and usually running in a 32bit chroot (e.g. the video game
Savage with the close-source NVidia drivers, but Sun's 32bit JRE 1.5.0
runs fine). I thought that I ruled out heat problems, but I suspect
maybe the 42C CPU temp reading may be too low (due to the other suspect
readings) because I've ruled out everything but heat and a bad CPU (ran
memtest86+ for 20 passes, no errors).

How can I tell if my sensors are bad or if I just need to put a compute
line in my sensors.conf?

Drew Vogel

[lm-sensors] Bad readouts on ASUS M2V VIA VT8237A

[Rudolf Marek]

Hi,
> # sensors
> k8temp-pci-00c3
> Adapter: PCI adapter
> Core0 Temp:
>              +30?C
> Core1 Temp:
>              +37?C

Looks good.

> 
> it8712-isa-0d00
> Adapter: ISA adapter
> VCore 1:   +1.31 V  (min =  +0.00 V, max =  +4.08 V)
> VCore 2:   +4.08 V  (min =  +0.00 V, max =  +4.08 V)   ALARM
> +3.3V:     +3.31 V  (min =  +0.00 V, max =  +4.08 V)
> +5V:       +4.89 V  (min =  +0.00 V, max =  +6.85 V)
> +12V:     +11.90 V  (min =  +0.00 V, max = +16.32 V)
> -12V:      +3.93 V  (min = -27.36 V, max =  +3.93 V)   ALARM
> -5V:       +4.03 V  (min = -13.64 V, max =  +4.03 V)   ALARM
> Stdby:     +6.85 V  (min =  +0.00 V, max =  +6.85 V)   ALARM
> VBat:      +3.31 V
> fan1:     35526 RPM  (min =    0 RPM, div = 2)
> fan2:        0 RPM  (min =    0 RPM, div = 2)
> fan3:        0 RPM  (min =    0 RPM, div = 2)
> M/B Temp:    +36?C  (low  =    -1?C, high =  +127?C)   sensor = thermistor
> CPU Temp:    +42?C  (low  =    -1?C, high =  +127?C)   sensor = thermistor

Thermistor bellow cpu perhaps...

> Temp3:      +128?C  (low  =    -1?C, high =  +127?C)   sensor = disabled
> 
> 
> 
> k8temp-pci-00c3 should be my NVidia 7600GT card and those seem correct.

Nope. K8temo is the CPU temperature provided directly from the CPU. It may be
+-5C different from "real" cpu temp

> On it8712-isa-0d00 the +voltage readings seem perfect but the -12V and
> -5V voltages read out as positive values. AFAIK, this is impossible,
> because the system wouldn't be stable enough for me to run the sensors
> program (must less install the operating system in the first place). The
> fan1 (CPU fan) reading is clearly wrong because at 35k RPM it should be
> melting the plastic housing.

The -5V and -12V maybe are not monitored at all please check some compute
formulas in /etc/sensors.conf (only motherboard manufacturer knows the scaling
factors, you may use the "ignore" statements to ignore it)

Maybe the fan is too low and there might be some overflow ... Please increase
the fan divisor.

you may do that:

set fan1_div 8

In correct section of /etc/sensors.conf

Then save the file and run sensors -s to "apply" the changes and run sensors again.


> The system is slightly unstable, but not consistently so. It is an
> Athlon64 X2 system running Debian AMD64 (sid). All of my compatibility
> problems are with closed-source software (e.g. Sun's 64bit JRE 1.5
> segfaults) and usually running in a 32bit chroot (e.g. the video game
> Savage with the close-source NVidia drivers, but Sun's 32bit JRE 1.5.0
> runs fine). I thought that I ruled out heat problems, but I suspect
> maybe the 42C CPU temp reading may be too low (due to the other suspect
> readings) because I've ruled out everything but heat and a bad CPU (ran
> memtest86+ for 20 passes, no errors).

The temp of CPU looks good. Maybe the chipset needs to be cooled better? Is the
chipset fan ok?


> How can I tell if my sensors are bad or if I just need to put a compute
> line in my sensors.conf?

Check above please. In general the wiring of voltages depends on board
manufacturer. Your voltages looks OK. Maybe you will need stronger PSU because
the fast changes of voltage levels remains hidden.

I would suggest to replace the PSU, if you receive just SIGSEGV and no real
lockups I think there might be some issues with the nvidia driver. Please try
the X.org one.

Hope it helps,

Rudolf

Re: [lm-sensors] Bad readouts on ASUS M2V VIA VT8237A

[Jean Delvare]

Hi Drew,

On Wed, 03 Jan 2007 15:16:33 -0600, Drew Vogel wrote:
> it8712-isa-0d00
> Adapter: ISA adapter
> VCore 1:   +1.31 V  (min =  +0.00 V, max =  +4.08 V)
> VCore 2:   +4.08 V  (min =  +0.00 V, max =  +4.08 V)   ALARM
> +3.3V:     +3.31 V  (min =  +0.00 V, max =  +4.08 V)
> +5V:       +4.89 V  (min =  +0.00 V, max =  +6.85 V)
> +12V:     +11.90 V  (min =  +0.00 V, max = +16.32 V)
> -12V:      +3.93 V  (min = -27.36 V, max =  +3.93 V)   ALARM
> -5V:       +4.03 V  (min = -13.64 V, max =  +4.03 V)   ALARM
> Stdby:     +6.85 V  (min =  +0.00 V, max =  +6.85 V)   ALARM
> VBat:      +3.31 V
> fan1:     35526 RPM  (min =    0 RPM, div = 2)
> fan2:        0 RPM  (min =    0 RPM, div = 2)
> fan3:        0 RPM  (min =    0 RPM, div = 2)
> M/B Temp:    +36°C  (low  =    -1°C, high =  +127°C)   sensor = thermistor
> CPU Temp:    +42°C  (low  =    -1°C, high =  +127°C)   sensor = thermistor
> Temp3:      +128°C  (low  =    -1°C, high =  +127°C)   sensor = disabled

Do you still have this Asus M2V board? Would you be able to tell me the
revision of the IT8712F chip being used on it? The it87 driver writes
it in the kernel log when loaded. Alternatively, the output of the
following command will do:
# isadump -k 0x87,0x01,0x55,0x55 0x2e 0x2f 4

Thanks,
-- 
Jean Delvare

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