[mythtv-users] OT: Monitoring CPU Temperature

Kevin J. Cummings cummings at kjchome.homeip.net
Fri Aug 15 02:46:18 UTC 2008


Harry Devine wrote:
> Before anyone says it, yes, I checked Gossamer threads for this but 
> didn't see any posts that fit my situation, so I thought I'd ask, even 
> though it's not really Myth specific.  I figured that someone here would 
> have seen this.
> 
> My Myth box has been shutting down unexpectedly recently, and every time 
> I boot it back up, the POST screen says "CPU Fan Error; Press F1 to 
> resume".  I do that and it comes back up.  Once it said that and "CPU 
> Over Temperature error".  So I'm thinking that my CPU fan is having an 
> issue

So, what's wrong with opening up the case and *LOOKING* at the CPU fan 
when you power the system up to see if the fan is spinning?  Do your 
CMOS setups screens have any information about your CPU temp and fan speed?

> Before I go and buy a new one, a friend suggested that I try and monitor 
> it and I immediately thought "lm_sensors".  So I got that up and running 
> and have a few questions:
> 
> 1) I know that I can run 'sensors' to get the information, but I don't 
> know what to do with it.  I read the docs on the lm-sensors site but 
> couldn't really see anything on this.  If the temp gets too high, can I 
> shut the box down gracefully?  Can I somehow send out an email alert or 
> something?
> 
> 2) I couldn't find a sensors.conf for my motherboard (an ASUS A8N32-SLI 
> Deluxe) on their website, but I did find one that someone made for that 
> board, and I'm using it now (after running 'sensors -s' to load it).
> 
> 3) I ran 'sensors -f' and I see the following output (I'm not really 
> sure if these values are good or bad, or if I should be alarmed):
> k8temp-pci-00c3
> Adapter: PCI adapter
> temp1:      +165°F
> temp3:      +162°F
> 
> it8712-isa-0d00
> Adapter: ISA adapter
> CPU VCore: +1.39 V  (min =  +1.10 V, max =  +1.50 V)  
> +3.3V:     +3.26 V  (min =  +3.14 V, max =  +3.47 V)  
> +5V:       +4.89 V  (min =  +4.76 V, max =  +5.24 V)  
> +12V:     +11.71 V  (min = +11.39 V, max = +12.61 V)  
> CPU Fan:  1171 RPM  (min =    0 RPM, div = 128)         
> Chas Fan:    0 RPM  (min =    0 RPM, div = 128)         
> Power Fan:   0 RPM  (min =    0 RPM, div = 8)         
> CPU Temp:   +154°F  (low  =   +32°F, high =  +140°F)   sensor = 
> thermistor  
> M/B Temp:   +131°F  (low  =   +41°F, high =  +140°F)   sensor = 
> thermistor  

*IF* this information is correct, you will need to monitor the CPU Fan 
speed and the CPU temperature.  Especially what happens near when the 
system shuts down.  What are the operating specification for your CPU? 
Is the noticed temperature with its standard operating range?

-- 
Kevin J. Cummings
kjchome at rcn.com
cummings at kjchome.homeip.net
cummings at kjc386.framingham.ma.us
Registered Linux User #1232 (http://counter.li.org)


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