[COLUG] Computer overheating (SENSORS OUTPUT)

Chris Clonch chris at theclonchs.com
Wed Sep 5 22:36:36 EDT 2007


On Tuesday 04 September 2007 9:35:44 David McGlone wrote:
> Here is what sensors reports:
>
> smsc47m192-i2c-2-2d
> Adapter: SMBus I801 adapter at 1880
> +2.5V:     +0.00 V  (min =  +3.19 V, max =  +3.32 V)   ALARM
> VCore:     +0.00 V  (min =  +2.99 V, max =  +2.99 V)   ALARM
> +3.3V:     +0.00 V  (min =  +4.38 V, max =  +4.37 V)   ALARM
> +5V:       +0.00 V  (min =  +6.64 V, max =  +6.64 V)   ALARM
> +12V:      +3.06 V  (min = +15.94 V, max = +15.94 V)   ALARM
> VCC:       +3.30 V  (min =  +4.38 V, max =  +4.38 V)   ALARM
> +1.5V:     +0.03 V  (min =  +1.96 V, max =  +1.99 V)   ALARM
> +1.8V:     +0.00 V  (min =  +2.39 V, max =  +1.19 V)   ALARM
> Chip Temp: +44.0°C  (low  =    -1°C, high =   -81°C)  ALARM
> CPU Temp:  +82.0°C  (low  =    -1°C, high =    -1°C)
> Sys Temp:  +44.0°C  (low  =    -1°C, high =    -1°C)
> vid:      +1.475 V  (VRM Version 9.0)


It looks like lm_sensors is using the correct sensor module (for your chipset 
as listed in lspci), but it is definitely not configured right:  +12V reports 
3.06v...  As Bill Yang mentioned, it might be buggy for your chipset.   The 
poweroff could be triggered by something else using the lm_sensors to detect 
what it thinks are "alarms".

You mentioned that you see overheating messages in the syslog.  What is the 
source of the message?  Are there any other messages (above or below) related 
to the problem?

As someone else asked, what type of PC are you using?  What is the motherboard 
make/model?  That can give you some terms to use with google.

One last thing you can put the system into single user mode (telinit 1), drum 
up some system activity, and see if your problem goes away.

-Chris



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