[lm-sensors] how accurate?

[lm-sensors] how accurate?

[Andrew]

Hi All,

I have a server (remote, 300kms away) that crash on me yesterday... 
Anyhow, I upgraded it to a 2.6 kernel after it came back up, and 
installed lm-sensors.  

Sensors-detect found the following modules to install:
i2c-piix4
w83781d
eeprom

(after installing the modules) - sensors gave the following output (see 
below):

I have used sensors on about 15 other machines so far, and the results 
always seemed to be accurate.  Is there a chance that the temps could be 
wrong? (I haven't used this module before). The machine is reasonably 
old, so I would not be surprised if the fans were broken...

Any advice greatly appreciated.

Thanks,
Andrew.


Adapter: SMBus PIIX4 adapter at 0580
Memory type:            SDR SDRAM DIMM
Memory size (MB):       512

eeprom-i2c-0-52
Adapter: SMBus PIIX4 adapter at 0580
Memory type:            SDR SDRAM DIMM
Memory size (MB):       512

eeprom-i2c-0-51
Adapter: SMBus PIIX4 adapter at 0580
Memory type:            SDR SDRAM DIMM
Memory size (MB):       512

eeprom-i2c-0-50
Adapter: SMBus PIIX4 adapter at 0580
Memory type:            SDR SDRAM DIMM
Memory size (MB):       512

w83782d-i2c-0-29
Adapter: SMBus PIIX4 adapter at 0580
VCore 1:   +1.50 V  (min =  +0.00 V, max =  +4.08 V)
VCore 2:   +1.25 V  (min =  +0.00 V, max =  +4.08 V)
+3.3V:     +3.31 V  (min =  +2.82 V, max =  +3.79 V)
+5V:       +5.08 V  (min =  +4.52 V, max =  +4.30 V)       ALARM
+12V:     +11.86 V  (min =  +0.06 V, max =  +0.00 V)       ALARM
-12V:      -1.01 V  (min =  -9.65 V, max = -12.28 V)       ALARM
-5V:       +2.59 V  (min =  +0.33 V, max =  -0.93 V)       ALARM
V5SB:      +5.08 V  (min =  +0.86 V, max =  +3.44 V)       ALARM
VBat:      +1.04 V  (min =  +0.03 V, max =  +0.02 V)       ALARM
fan1:        0 RPM  (min = 21093 RPM, div = 2)              ALARM
fan2:        0 RPM  (min = 16071 RPM, div = 2)              ALARM
fan3:        0 RPM  (min = 75000 RPM, div = 2)              ALARM
temp1:       +77 C  (high =    +0 C, hyst =    +4 C)   sensor = 
thermistor   ALARM
temp2:     +64.0 C  (high =   +80 C, hyst =   +75 C)   sensor = thermistor
temp3:     +64.0 C  (high =   +80 C, hyst =   +75 C)   sensor = thermistor
vid:      +1.450 V  (VRM Version 8.5)
alarms:   Chassis intrusion detection                      ALARM
beep_enable:
          Sound alarm disabled

[lm-sensors] how accurate?

[Rudolf Marek]

Andrew wrote:
> Hi All,
> 
> I have a server (remote, 300kms away) that crash on me yesterday... 
> Anyhow, I upgraded it to a 2.6 kernel after it came back up, and 
> installed lm-sensors.  

Good. Most likely overheat.

> Sensors-detect found the following modules to install:
> i2c-piix4
> w83781d
> eeprom
> 
> 
> I have used sensors on about 15 other machines so far, and the results 
> always seemed to be accurate.  Is there a chance that the temps could be 
> wrong? (I haven't used this module before). The machine is reasonably 
> old, so I would not be surprised if the fans were broken...

Well there is always a chance...

Do you know the motherboard manufacturer? maybe we can compare with some 
database of motherboards to see which thermal lines means what.

Maybe you can try dmidecode utility which should tell you the manuf name.

> w83782d-i2c-0-29
> Adapter: SMBus PIIX4 adapter at 0580
> VCore 1:   +1.50 V  (min =  +0.00 V, max =  +4.08 V)
> VCore 2:   +1.25 V  (min =  +0.00 V, max =  +4.08 V)
> +3.3V:     +3.31 V  (min =  +2.82 V, max =  +3.79 V)
> +5V:       +5.08 V  (min =  +4.52 V, max =  +4.30 V)       ALARM
> +12V:     +11.86 V  (min =  +0.06 V, max =  +0.00 V)       ALARM
> -12V:      -1.01 V  (min =  -9.65 V, max = -12.28 V)       ALARM
> -5V:       +2.59 V  (min =  +0.33 V, max =  -0.93 V)       ALARM
> V5SB:      +5.08 V  (min =  +0.86 V, max =  +3.44 V)       ALARM
> VBat:      +1.04 V  (min =  +0.03 V, max =  +0.02 V)       ALARM
> fan1:        0 RPM  (min = 21093 RPM, div = 2)              ALARM
> fan2:        0 RPM  (min = 16071 RPM, div = 2)              ALARM
> fan3:        0 RPM  (min = 75000 RPM, div = 2)              ALARM

Try changing fan divisor to 4 or 8 if the fan really spins. (but slowly)

> temp1:       +77 C  (high =    +0 C, hyst =    +4 C)   sensor = 
> thermistor   ALARM

Thermistor...  Quite hot down the CPU socket...

> temp2:     +64.0 C  (high =   +80 C, hyst =   +75 C)   sensor = thermistor
> temp3:     +64.0 C  (high =   +80 C, hyst =   +75 C)   sensor = thermistor

64 quite hot inside.

You may try to change the temp inputs to diode to see if there some more 
reasonable temps...

Suggested steps: change the fan divisor (check fanX_div stuff in sensors conf) 
to see if the fans still reads 0
if so maybe someone should check the fan if it is stuck or not + PSU fan.

then you might try to change the sensor type to diode... (set senors stuff)

Best would be to know the motherboard manufacturer/type so we might know what 
sensors is what...

Regards
Rudolf

[lm-sensors] how accurate?

[Andrew]

Hi,

Thanks for the reply - Changing to diode didn't make any difference - 
dmidecode doesn't  give me any useful information... (see below)

I might send someone on a road trip - I think the fans might be broken :)

Thank you for all your help.

Cheers,
Andrew

Handle 0x0001
        DMI type 1, 25 bytes.
        System Information
                Manufacturer: To Be Filled By O.E.M.
                Product Name: To Be Filled By O.E.M.
                Version: To Be Filled By O.E.M.
                Serial Number: To Be Filled By O.E.M.
                UUID: Not Settable
                Wake-up Type: Unknown
Handle 0x0002
        DMI type 2, 8 bytes.
        Base Board Information
                Manufacturer: To be filled by O.E.M.
                Product Name: To be filled by O.E.M.
                Version: To be filled by O.E.M.
                Serial Number: To be filled by O.E.M.
Handle 0x0003
        DMI type 3, 17 bytes.
        Chassis Information
                Manufacturer: To Be Filled By O.E.M.
                Type: Desktop
                Lock: Not Present
                Version: To Be Filled By O.E.M.
                Serial Number: To Be Filled By O.E.M.
                Asset Tag: To Be Filled By O.E.M.
                Boot-up State: Unknown
                Power Supply State: Unknown
                Thermal State: Unknown
                Security Status: Unknown
                OEM Information: 0x00000000

Rudolf Marek wrote:

> Andrew wrote:
>
>> Hi All,
>>
>> I have a server (remote, 300kms away) that crash on me yesterday... 
>> Anyhow, I upgraded it to a 2.6 kernel after it came back up, and 
>> installed lm-sensors.  
>
>
> Good. Most likely overheat.
>
>> Sensors-detect found the following modules to install:
>> i2c-piix4
>> w83781d
>> eeprom
>>
>>
>> I have used sensors on about 15 other machines so far, and the 
>> results always seemed to be accurate.  Is there a chance that the 
>> temps could be wrong? (I haven't used this module before). The 
>> machine is reasonably old, so I would not be surprised if the fans 
>> were broken...
>
>
> Well there is always a chance...
>
> Do you know the motherboard manufacturer? maybe we can compare with 
> some database of motherboards to see which thermal lines means what.
>
> Maybe you can try dmidecode utility which should tell you the manuf name.
>
>> w83782d-i2c-0-29
>> Adapter: SMBus PIIX4 adapter at 0580
>> VCore 1:   +1.50 V  (min =  +0.00 V, max =  +4.08 V)
>> VCore 2:   +1.25 V  (min =  +0.00 V, max =  +4.08 V)
>> +3.3V:     +3.31 V  (min =  +2.82 V, max =  +3.79 V)
>> +5V:       +5.08 V  (min =  +4.52 V, max =  +4.30 V)       ALARM
>> +12V:     +11.86 V  (min =  +0.06 V, max =  +0.00 V)       ALARM
>> -12V:      -1.01 V  (min =  -9.65 V, max = -12.28 V)       ALARM
>> -5V:       +2.59 V  (min =  +0.33 V, max =  -0.93 V)       ALARM
>> V5SB:      +5.08 V  (min =  +0.86 V, max =  +3.44 V)       ALARM
>> VBat:      +1.04 V  (min =  +0.03 V, max =  +0.02 V)       ALARM
>> fan1:        0 RPM  (min = 21093 RPM, div = 2)              ALARM
>> fan2:        0 RPM  (min = 16071 RPM, div = 2)              ALARM
>> fan3:        0 RPM  (min = 75000 RPM, div = 2)              ALARM
>
>
> Try changing fan divisor to 4 or 8 if the fan really spins. (but slowly)
>
>> temp1:       +77 C  (high =    +0 C, hyst =    +4 C)   sensor = 
>> thermistor   ALARM
>
>
> Thermistor...  Quite hot down the CPU socket...
>
>> temp2:     +64.0 C  (high =   +80 C, hyst =   +75 C)   sensor = 
>> thermistor
>> temp3:     +64.0 C  (high =   +80 C, hyst =   +75 C)   sensor = 
>> thermistor
>
>
> 64 quite hot inside.
>
> You may try to change the temp inputs to diode to see if there some 
> more reasonable temps...
>
> Suggested steps: change the fan divisor (check fanX_div stuff in 
> sensors conf) to see if the fans still reads 0
> if so maybe someone should check the fan if it is stuck or not + PSU fan.
>
> then you might try to change the sensor type to diode... (set senors 
> stuff)
>
> Best would be to know the motherboard manufacturer/type so we might 
> know what sensors is what...
>
> Regards
> Rudolf

[lm-sensors] how accurate?

[Rudolf Marek]

Andrew wrote:
> Hi,
> 
> Thanks for the reply - Changing to diode didn't make any difference - 
> dmidecode doesn't  give me any useful information... (see below)
> 
> I might send someone on a road trip - I think the fans might be broken :)

And the fans still reads 0 even with changed divisor?

Regards
Rudolf