[lm-sensors] Whats wrong with LM-Sensors

[lm-sensors] Whats wrong with LM-Sensors

[Tomas Larsson]

I have 2 motherboards, both of the same type.
They are INTEL D945 with ATOM 330 processor.
One of them is running CENTOS 5.9, the other one is running CENTOS 6.4, both
32-bit versions

After installing lm_sensors and running sensors-detect
I have the following output:

CENTOS 5.9 sensors version 2.10.7 with libsensors version 2.10.7

[root@BLATUNGA ~]# /etc/rc.d/init.d/lm_sensors status
smsc47m192-i2c-0-2d
Adapter: SMBus I801 adapter at 3000
+2.5V:     +2.53 V  (min =  +0.00 V, max =  +3.32 V)
Vcore:     +1.15 V  (min =  +0.00 V, max =  +2.99 V)
+3.3V:     +3.23 V  (min =  +0.00 V, max =  +4.38 V)
+5V:       +4.92 V  (min =  +0.00 V, max =  +6.64 V)
+12V:     +11.94 V  (min =  +0.00 V, max = +15.94 V)
VCC:       +3.25 V  (min =  +0.00 V, max =  +4.38 V)
+1.5V:     +1.56 V  (min =  +0.00 V, max =  +1.99 V)
+1.8V:     +1.76 V  (min =  +0.00 V, max =  +2.39 V)
Chipset Temp:  +44.0°C  (low  =  -127°C, high =  +127°C)
CPU Temp:  +69.0°C  (low  =  -127°C, high =  +127°C)
System Temp:  +55.0°C  (low  =  -127°C, high =  +127°C)
vid:      +2.050 V  (VRM Version 8.2)

smsc47m1-isa-0680
Adapter: ISA adapter
Case Fan:    0 RPM  (min = 1280 RPM, div = 4)          ALARM
CPU Fan:     0 RPM  (min = 1280 RPM, div = 4)          ALARM
[root@BLATUNGA ~]# sensors -v
sensors version 2.10.7 with libsensors version 2.10.7
[root@BLATUNGA ~]#

CENTOS 6.4 sensors version 3.1.1 with libsensors version 3.1.1

[root@seedbox ~]# /etc/rc.d/init.d/lm_sensors status
coretemp-isa-0000
Adapter: ISA adapter
Core 0:      +36.0°C  (high = +70.0°C, crit = +90.0°C)
Core 1:      +36.0°C  (high = +70.0°C, crit = +90.0°C)
[root@seedbox ~]# sensors -v
sensors version 3.1.1 with libsensors version 3.1.1
[root@seedbox ~]#


Why is it that the outputs are different, It seems to be impossible to get
the rest of the output in the 3.1.1 version



With best regards
Tomas Larsson
TL Engineering & Consultants (TLEC)
Engelbrektsgatan 121
SE 50639 Borås
Sweden
+46 (0)739-932673
tomas@tlec.se
www.tlec.se




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Re: [lm-sensors] Whats wrong with LM-Sensors

[Guenter Roeck]

On 09/08/2013 07:07 AM, Tomas Larsson wrote:
> I have 2 motherboards, both of the same type.
> They are INTEL D945 with ATOM 330 processor.
> One of them is running CENTOS 5.9, the other one is running CENTOS 6.4, both
> 32-bit versions
>
> After installing lm_sensors and running sensors-detect
> I have the following output:
>
> CENTOS 5.9 sensors version 2.10.7 with libsensors version 2.10.7
>
> [root@BLATUNGA ~]# /etc/rc.d/init.d/lm_sensors status
> smsc47m192-i2c-0-2d
> Adapter: SMBus I801 adapter at 3000
> +2.5V:     +2.53 V  (min =  +0.00 V, max =  +3.32 V)
> Vcore:     +1.15 V  (min =  +0.00 V, max =  +2.99 V)
> +3.3V:     +3.23 V  (min =  +0.00 V, max =  +4.38 V)
> +5V:       +4.92 V  (min =  +0.00 V, max =  +6.64 V)
> +12V:     +11.94 V  (min =  +0.00 V, max = +15.94 V)
> VCC:       +3.25 V  (min =  +0.00 V, max =  +4.38 V)
> +1.5V:     +1.56 V  (min =  +0.00 V, max =  +1.99 V)
> +1.8V:     +1.76 V  (min =  +0.00 V, max =  +2.39 V)
> Chipset Temp:  +44.0°C  (low  =  -127°C, high =  +127°C)
> CPU Temp:  +69.0°C  (low  =  -127°C, high =  +127°C)
> System Temp:  +55.0°C  (low  =  -127°C, high =  +127°C)
> vid:      +2.050 V  (VRM Version 8.2)
>
> smsc47m1-isa-0680
> Adapter: ISA adapter
> Case Fan:    0 RPM  (min = 1280 RPM, div = 4)          ALARM
> CPU Fan:     0 RPM  (min = 1280 RPM, div = 4)          ALARM
> [root@BLATUNGA ~]# sensors -v
> sensors version 2.10.7 with libsensors version 2.10.7
> [root@BLATUNGA ~]#
>
> CENTOS 6.4 sensors version 3.1.1 with libsensors version 3.1.1
>
> [root@seedbox ~]# /etc/rc.d/init.d/lm_sensors status
> coretemp-isa-0000
> Adapter: ISA adapter
> Core 0:      +36.0°C  (high = +70.0°C, crit = +90.0°C)
> Core 1:      +36.0°C  (high = +70.0°C, crit = +90.0°C)
> [root@seedbox ~]# sensors -v
> sensors version 3.1.1 with libsensors version 3.1.1
> [root@seedbox ~]#
>
>
> Why is it that the outputs are different, It seems to be impossible to get
> the rest of the output in the 3.1.1 version
>

Hard to say without additional information. What is the output of sensors-detect ?
Is it possible that you did not load the smsc47m1 and smsc47m192 modules on the
second system ? What is the output of lsmod ? Is there anything interesting in dmesg ?

Guenter


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Re: [lm-sensors] Whats wrong with LM-Sensors

[Tomas Larsson]

lsmod sayas that they are loaded

dmesg
i801_smbus 0000:00:1f.3: PCI INT B -> GSI 19 (level, low) -> IRQ 19
ACPI: resource 0000:00:1f.3 [io  0x2000-0x201f] conflicts with ACPI region
SMB1 [io 0x2000-0x2016]
ACPI: If an ACPI driver is available for this device, you should use it
instead of the native driver
coretemp coretemp.0: Unable to read TjMax from CPU.
coretemp coretemp.0: Unable to read TjMax from CPU.
smsc47m1: Found SMSC LPC47M15x/LPC47M192/LPC47M997
ACPI: resource smsc47m1 [io  0x0680-0x06ff] conflicts with ACPI region RTIO
[io 0x680-0x6ff]
ACPI: If an ACPI driver is available for this device, you should use it
instead of the native driver


With best regards
Tomas Larsson
TL Engineering & Consultants (TLEC)
Engelbrektsgatan 121
SE 50639 Borås
Sweden
+46 (0)739-932673
tomas@tlec.se
www.tlec.se


> -----Original Message-----
> From: Guenter Roeck [mailto:linux@roeck-us.net]
> Sent: Sunday, September 08, 2013 5:56 PM
> To: Tomas Larsson
> Cc: lm-sensors@lm-sensors.org
> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
> 
> On 09/08/2013 07:07 AM, Tomas Larsson wrote:
> > I have 2 motherboards, both of the same type.
> > They are INTEL D945 with ATOM 330 processor.
> > One of them is running CENTOS 5.9, the other one is running CENTOS
> > 6.4, both 32-bit versions
> >
> > After installing lm_sensors and running sensors-detect I have the
> > following output:
> >
> > CENTOS 5.9 sensors version 2.10.7 with libsensors version 2.10.7
> >
> > [root@BLATUNGA ~]# /etc/rc.d/init.d/lm_sensors status
> > smsc47m192-i2c-0-2d
> > Adapter: SMBus I801 adapter at 3000
> > +2.5V:     +2.53 V  (min =  +0.00 V, max =  +3.32 V)
> > Vcore:     +1.15 V  (min =  +0.00 V, max =  +2.99 V)
> > +3.3V:     +3.23 V  (min =  +0.00 V, max =  +4.38 V)
> > +5V:       +4.92 V  (min =  +0.00 V, max =  +6.64 V)
> > +12V:     +11.94 V  (min =  +0.00 V, max = +15.94 V)
> > VCC:       +3.25 V  (min =  +0.00 V, max =  +4.38 V)
> > +1.5V:     +1.56 V  (min =  +0.00 V, max =  +1.99 V)
> > +1.8V:     +1.76 V  (min =  +0.00 V, max =  +2.39 V)
> > Chipset Temp:  +44.0°C  (low  =  -127°C, high =  +127°C) CPU Temp:
> > +69.0°C  (low  =  -127°C, high =  +127°C) System Temp:  +55.0°C
> > (low  =  -127°C, high =  +127°C)
> > vid:      +2.050 V  (VRM Version 8.2)
> >
> > smsc47m1-isa-0680
> > Adapter: ISA adapter
> > Case Fan:    0 RPM  (min = 1280 RPM, div = 4)          ALARM
> > CPU Fan:     0 RPM  (min = 1280 RPM, div = 4)          ALARM
> > [root@BLATUNGA ~]# sensors -v
> > sensors version 2.10.7 with libsensors version 2.10.7 [root@BLATUNGA
> > ~]#
> >
> > CENTOS 6.4 sensors version 3.1.1 with libsensors version 3.1.1
> >
> > [root@seedbox ~]# /etc/rc.d/init.d/lm_sensors status
> > coretemp-isa-0000
> > Adapter: ISA adapter
> > Core 0:      +36.0°C  (high = +70.0°C, crit = +90.0°C)
> > Core 1:      +36.0°C  (high = +70.0°C, crit = +90.0°C)
> > [root@seedbox ~]# sensors -v
> > sensors version 3.1.1 with libsensors version 3.1.1 [root@seedbox ~]#
> >
> >
> > Why is it that the outputs are different, It seems to be impossible to
get
> > the rest of the output in the 3.1.1 version
> >
> 
> Hard to say without additional information. What is the output of sensors-
> detect ?
> Is it possible that you did not load the smsc47m1 and smsc47m192 modules
> on the
> second system ? What is the output of lsmod ? Is there anything
interesting in
> dmesg ?
> 
> Guenter



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Re: [lm-sensors] Whats wrong with LM-Sensors

[Guenter Roeck]

On 09/08/2013 09:33 AM, Tomas Larsson wrote:
> lsmod sayas that they are loaded
>
> dmesg
> i801_smbus 0000:00:1f.3: PCI INT B -> GSI 19 (level, low) -> IRQ 19
> ACPI: resource 0000:00:1f.3 [io  0x2000-0x201f] conflicts with ACPI region
> SMB1 [io 0x2000-0x2016]
> ACPI: If an ACPI driver is available for this device, you should use it
> instead of the native driver
> coretemp coretemp.0: Unable to read TjMax from CPU.
> coretemp coretemp.0: Unable to read TjMax from CPU.
> smsc47m1: Found SMSC LPC47M15x/LPC47M192/LPC47M997
> ACPI: resource smsc47m1 [io  0x0680-0x06ff] conflicts with ACPI region RTIO
> [io 0x680-0x6ff]
> ACPI: If an ACPI driver is available for this device, you should use it
> instead of the native driver
>

You do see the answer above. You have an ACPI resource conflict.
See http://www.lm-sensors.org/wiki/FAQ/Chapter3#Mysensorshavestoppedworkinginkernel2.6.31

Guenter




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Re: [lm-sensors] Whats wrong with LM-Sensors

[Tomas Larsson]

Ok, that explains things, so how to get it working, are there any
aspi-drivers available?


With best regards
Tomas Larsson
TL Engineering & Consultants (TLEC)
Engelbrektsgatan 121
SE 50639 Borås
Sweden
+46 (0)739-932673
tomas@tlec.se
www.tlec.se


> -----Original Message-----
> From: Guenter Roeck [mailto:linux@roeck-us.net]
> Sent: Sunday, September 08, 2013 6:55 PM
> To: Tomas Larsson
> Cc: lm-sensors@lm-sensors.org
> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
> 
> On 09/08/2013 09:33 AM, Tomas Larsson wrote:
> > lsmod sayas that they are loaded
> >
> > dmesg
> > i801_smbus 0000:00:1f.3: PCI INT B -> GSI 19 (level, low) -> IRQ 19
> > ACPI: resource 0000:00:1f.3 [io  0x2000-0x201f] conflicts with ACPI
> > region
> > SMB1 [io 0x2000-0x2016]
> > ACPI: If an ACPI driver is available for this device, you should use
> > it instead of the native driver coretemp coretemp.0: Unable to read
> > TjMax from CPU.
> > coretemp coretemp.0: Unable to read TjMax from CPU.
> > smsc47m1: Found SMSC LPC47M15x/LPC47M192/LPC47M997
> > ACPI: resource smsc47m1 [io  0x0680-0x06ff] conflicts with ACPI region
> > RTIO [io 0x680-0x6ff]
> > ACPI: If an ACPI driver is available for this device, you should use
> > it instead of the native driver
> >
> 
> You do see the answer above. You have an ACPI resource conflict.
> See http://www.lm-
> sensors.org/wiki/FAQ/Chapter3#Mysensorshavestoppedworkinginkernel2.6.3
> 1
> 
> Guenter
> 
> 



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Re: [lm-sensors] Whats wrong with LM-Sensors

[Guenter Roeck]

On 09/08/2013 10:15 AM, Tomas Larsson wrote:
> Ok, that explains things, so how to get it working, are there any
> aspi-drivers available?
>

Please don't top-post.

I don't think there is an acpi driver available; most of the time there isn't.
Also, looks like the acpi thermal module isn't loaded, meaning acpi may not export
the necessary thermal information at all.

acpi drivers are highly board and vendor specific, which means that typically no one
really bothers to write a driver for it, including board vendors. Besides, most of the time
much of the available information from the chips is not exported to the user through acpi,
so even if you had an acpi driver you would likely end up with limited or even no information.

Only option I could see (besides enabling the relax option) would be to disassemble the DSDT,
check what is available, and if there is anything write a driver yourself to access it.
By disassembling the DSDT you would also see what kind of risk you could run into by disabling
the region conflict checks.

Guenter

>
> With best regards
> Tomas Larsson
> TL Engineering & Consultants (TLEC)
> Engelbrektsgatan 121
> SE 50639 Borås
> Sweden
> +46 (0)739-932673
> tomas@tlec.se
> www.tlec.se
>
>
>> -----Original Message-----
>> From: Guenter Roeck [mailto:linux@roeck-us.net]
>> Sent: Sunday, September 08, 2013 6:55 PM
>> To: Tomas Larsson
>> Cc: lm-sensors@lm-sensors.org
>> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
>>
>> On 09/08/2013 09:33 AM, Tomas Larsson wrote:
>>> lsmod sayas that they are loaded
>>>
>>> dmesg
>>> i801_smbus 0000:00:1f.3: PCI INT B -> GSI 19 (level, low) -> IRQ 19
>>> ACPI: resource 0000:00:1f.3 [io  0x2000-0x201f] conflicts with ACPI
>>> region
>>> SMB1 [io 0x2000-0x2016]
>>> ACPI: If an ACPI driver is available for this device, you should use
>>> it instead of the native driver coretemp coretemp.0: Unable to read
>>> TjMax from CPU.
>>> coretemp coretemp.0: Unable to read TjMax from CPU.
>>> smsc47m1: Found SMSC LPC47M15x/LPC47M192/LPC47M997
>>> ACPI: resource smsc47m1 [io  0x0680-0x06ff] conflicts with ACPI region
>>> RTIO [io 0x680-0x6ff]
>>> ACPI: If an ACPI driver is available for this device, you should use
>>> it instead of the native driver
>>>
>>
>> You do see the answer above. You have an ACPI resource conflict.
>> See http://www.lm-
>> sensors.org/wiki/FAQ/Chapter3#Mysensorshavestoppedworkinginkernel2.6.3
>> 1
>>
>> Guenter
>>
>>
>
>
>
>


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Re: [lm-sensors] Whats wrong with LM-Sensors

[Tomas Larsson]

> -----Original Message-----
> From: Guenter Roeck [mailto:linux@roeck-us.net]
> Sent: Sunday, September 08, 2013 7:47 PM
> To: Tomas Larsson
> Cc: lm-sensors@lm-sensors.org
> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
> 
> On 09/08/2013 10:15 AM, Tomas Larsson wrote:
> > Ok, that explains things, so how to get it working, are there any
> > aspi-drivers available?
> >
> 
> Please don't top-post.
> 
> I don't think there is an acpi driver available; most of the time there
isn't.
> Also, looks like the acpi thermal module isn't loaded, meaning acpi may
not
> export the necessary thermal information at all.
> 
> acpi drivers are highly board and vendor specific, which means that
typically
> no one really bothers to write a driver for it, including board vendors.
> Besides, most of the time much of the available information from the chips
is
> not exported to the user through acpi, so even if you had an acpi driver
you
> would likely end up with limited or even no information.
> 
> Only option I could see (besides enabling the relax option) would be to
> disassemble the DSDT, check what is available, and if there is anything
write a
> driver yourself to access it.
> By disassembling the DSDT you would also see what kind of risk you could
run
> into by disabling the region conflict checks.
> 
> Guenter

Ok, sorry about the posting style.

Now which version should I trust, regarding temperatures.
I don't think the 3.1.1 version is showing correct values, guessing some 20
degrees to low or so.

The 2.10.7 version is only showing "CPU-Temperature" not for the cores them
selves.

Tomas






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Re: [lm-sensors] Whats wrong with LM-Sensors

[Guenter Roeck]

On 09/08/2013 11:36 AM, Tomas Larsson wrote:
>> -----Original Message-----
>> From: Guenter Roeck [mailto:linux@roeck-us.net]
>> Sent: Sunday, September 08, 2013 7:47 PM
>> To: Tomas Larsson
>> Cc: lm-sensors@lm-sensors.org
>> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
>>
>> On 09/08/2013 10:15 AM, Tomas Larsson wrote:
>>> Ok, that explains things, so how to get it working, are there any
>>> aspi-drivers available?
>>>
>>
>> Please don't top-post.
>>
>> I don't think there is an acpi driver available; most of the time there
> isn't.
>> Also, looks like the acpi thermal module isn't loaded, meaning acpi may
> not
>> export the necessary thermal information at all.
>>
>> acpi drivers are highly board and vendor specific, which means that
> typically
>> no one really bothers to write a driver for it, including board vendors.
>> Besides, most of the time much of the available information from the chips
> is
>> not exported to the user through acpi, so even if you had an acpi driver
> you
>> would likely end up with limited or even no information.
>>
>> Only option I could see (besides enabling the relax option) would be to
>> disassemble the DSDT, check what is available, and if there is anything
> write a
>> driver yourself to access it.
>> By disassembling the DSDT you would also see what kind of risk you could
> run
>> into by disabling the region conflict checks.
>>
>> Guenter
>
> Ok, sorry about the posting style.
>
> Now which version should I trust, regarding temperatures.
> I don't think the 3.1.1 version is showing correct values, guessing some 20
> degrees to low or so.
>
> The 2.10.7 version is only showing "CPU-Temperature" not for the cores them
> selves.
>

Different driver. Centos 6.4 uses the coretemp driver which gets the temperature
from the CPU directly. Unfortunately, Centos 6.4 is quite old when it comes to
kernel version, and so is its coretemp driver. The displayed temperatures in your version
are all wrong; the maximum temperature for Atom 330 is 125 degrees C, not 90 degrees C.
You'll have to add 35 degrees C to the displayed temperature.

You could either update the coretemp driver to a later version to fix this,
or add the offset to /etc/sensors3.conf.

Note that CPU temperatures are notoriously unreliable.

Guenter


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Re: [lm-sensors] Whats wrong with LM-Sensors

[Jean Delvare]

On Sun, 08 Sep 2013 11:58:39 -0700, Guenter Roeck wrote:
> Different driver. Centos 6.4 uses the coretemp driver which gets the temperature
> from the CPU directly. Unfortunately, Centos 6.4 is quite old when it comes to
> kernel version, and so is its coretemp driver. The displayed temperatures in your version
> are all wrong; the maximum temperature for Atom 330 is 125 degrees C, not 90 degrees C.
> You'll have to add 35 degrees C to the displayed temperature.
> 
> You could either update the coretemp driver to a later version to fix this,
> or add the offset to /etc/sensors3.conf.
> 
> Note that CPU temperatures are notoriously unreliable.

"Inaccurate in the low temperature range" is a better way to describe
the situation IMHO. The coretemp values are reliably telling the user
when the temperature gets too close to the high limit.

-- 
Jean Delvare

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Re: [lm-sensors] Whats wrong with LM-Sensors

[Tomas Larsson]

> -----Original Message-----
> From: Jean Delvare [mailto:khali@linux-fr.org]
> Sent: Sunday, September 08, 2013 9:10 PM
> To: Guenter Roeck
> Cc: Tomas Larsson; lm-sensors@lm-sensors.org
> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
> 
> On Sun, 08 Sep 2013 11:58:39 -0700, Guenter Roeck wrote:
> > Different driver. Centos 6.4 uses the coretemp driver which gets the
> > temperature from the CPU directly. Unfortunately, Centos 6.4 is quite
> > old when it comes to kernel version, and so is its coretemp driver.
> > The displayed temperatures in your version are all wrong; the maximum
> temperature for Atom 330 is 125 degrees C, not 90 degrees C.
> > You'll have to add 35 degrees C to the displayed temperature.
> >
> > You could either update the coretemp driver to a later version to fix
> > this, or add the offset to /etc/sensors3.conf.
> >
> > Note that CPU temperatures are notoriously unreliable.
> 
> "Inaccurate in the low temperature range" is a better way to describe the
> situation IMHO. The coretemp values are reliably telling the user when the
> temperature gets too close to the high limit.
> 
> --
> Jean Delvare

Well, I'm aware of that, what I want to know is when the fan fails, these
40mm fans are not that reliable, unfortunately.
However, regarding adding 35 degC offset, I can't find any entries in the
/etc/sensors3.conf. file, that is uilized by the coretemp driver.
Obviously using CENTOS I am stuck with the drivers in hand, doubt that they
will make updates available, unfortunately.


Tomas Larsson


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Re: [lm-sensors] Whats wrong with LM-Sensors

[Guenter Roeck]

On 09/08/2013 01:01 PM, Tomas Larsson wrote:
>> -----Original Message-----
>> From: Jean Delvare [mailto:khali@linux-fr.org]
>> Sent: Sunday, September 08, 2013 9:10 PM
>> To: Guenter Roeck
>> Cc: Tomas Larsson; lm-sensors@lm-sensors.org
>> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
>>
>> On Sun, 08 Sep 2013 11:58:39 -0700, Guenter Roeck wrote:
>>> Different driver. Centos 6.4 uses the coretemp driver which gets the
>>> temperature from the CPU directly. Unfortunately, Centos 6.4 is quite
>>> old when it comes to kernel version, and so is its coretemp driver.
>>> The displayed temperatures in your version are all wrong; the maximum
>> temperature for Atom 330 is 125 degrees C, not 90 degrees C.
>>> You'll have to add 35 degrees C to the displayed temperature.
>>>
>>> You could either update the coretemp driver to a later version to fix
>>> this, or add the offset to /etc/sensors3.conf.
>>>
>>> Note that CPU temperatures are notoriously unreliable.
>>
>> "Inaccurate in the low temperature range" is a better way to describe the
>> situation IMHO. The coretemp values are reliably telling the user when the
>> temperature gets too close to the high limit.
>>
>> --
>> Jean Delvare
>
> Well, I'm aware of that, what I want to know is when the fan fails, these
> 40mm fans are not that reliable, unfortunately.

Not sure if you can use the cpu temperature to predict if the fans are working
or not. The CPU can get pretty hot under load, even with the fans working.

Your initial e-mail showed the fan speeds as 0. Are they broken
or turned off or not connected to the fan speed sensors ?

Guenter


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Re: [lm-sensors] Whats wrong with LM-Sensors

[Tomas Larsson]

With best regards
Tomas Larsson
TL Engineering & Consultants (TLEC)
Engelbrektsgatan 121
SE 50639 Borås
Sweden
+46 (0)739-932673
tomas@tlec.se
www.tlec.se


> -----Original Message-----
> From: Guenter Roeck [mailto:linux@roeck-us.net]
> Sent: Sunday, September 08, 2013 11:20 PM
> To: Tomas Larsson
> Cc: 'Jean Delvare'; lm-sensors@lm-sensors.org
> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
> 
> On 09/08/2013 01:01 PM, Tomas Larsson wrote:
> >> -----Original Message-----
> >> From: Jean Delvare [mailto:khali@linux-fr.org]
> >> Sent: Sunday, September 08, 2013 9:10 PM
> >> To: Guenter Roeck
> >> Cc: Tomas Larsson; lm-sensors@lm-sensors.org
> >> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
> >>
> >> On Sun, 08 Sep 2013 11:58:39 -0700, Guenter Roeck wrote:
> >>> Different driver. Centos 6.4 uses the coretemp driver which gets the
> >>> temperature from the CPU directly. Unfortunately, Centos 6.4 is
> >>> quite old when it comes to kernel version, and so is its coretemp
driver.
> >>> The displayed temperatures in your version are all wrong; the
> >>> maximum
> >> temperature for Atom 330 is 125 degrees C, not 90 degrees C.
> >>> You'll have to add 35 degrees C to the displayed temperature.
> >>>
> >>> You could either update the coretemp driver to a later version to
> >>> fix this, or add the offset to /etc/sensors3.conf.
> >>>
> >>> Note that CPU temperatures are notoriously unreliable.
> >>
> >> "Inaccurate in the low temperature range" is a better way to describe
> >> the situation IMHO. The coretemp values are reliably telling the user
> >> when the temperature gets too close to the high limit.
> >>
> >> --
> >> Jean Delvare
> >
> > Well, I'm aware of that, what I want to know is when the fan fails,
> > these 40mm fans are not that reliable, unfortunately.
> 
> Not sure if you can use the cpu temperature to predict if the fans are
working
> or not. The CPU can get pretty hot under load, even with the fans working.
> 
> Your initial e-mail showed the fan speeds as 0. Are they broken or turned
off
> or not connected to the fan speed sensors ?
> 
> Guenter
Haven't got a clue why it says that they are 0, they definitely work now
(changed the fans today), They are 3-pins and connected to the correct
header.

On the Centos 6 mashine, I obviously don't get any fan-speed though.

Tomas Larsson


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Re: [lm-sensors] Whats wrong with LM-Sensors

[Guenter Roeck]

On 09/08/2013 02:27 PM, Tomas Larsson wrote:
>> -----Original Message-----
>> From: Guenter Roeck [mailto:linux@roeck-us.net]
>> Sent: Sunday, September 08, 2013 11:20 PM
>> To: Tomas Larsson
>> Cc: 'Jean Delvare'; lm-sensors@lm-sensors.org
>> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
>>
>> On 09/08/2013 01:01 PM, Tomas Larsson wrote:
>>>> -----Original Message-----
>>>> From: Jean Delvare [mailto:khali@linux-fr.org]
>>>> Sent: Sunday, September 08, 2013 9:10 PM
>>>> To: Guenter Roeck
>>>> Cc: Tomas Larsson; lm-sensors@lm-sensors.org
>>>> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
>>>>
>>>> On Sun, 08 Sep 2013 11:58:39 -0700, Guenter Roeck wrote:
>>>>> Different driver. Centos 6.4 uses the coretemp driver which gets the
>>>>> temperature from the CPU directly. Unfortunately, Centos 6.4 is
>>>>> quite old when it comes to kernel version, and so is its coretemp
> driver.
>>>>> The displayed temperatures in your version are all wrong; the
>>>>> maximum
>>>> temperature for Atom 330 is 125 degrees C, not 90 degrees C.
>>>>> You'll have to add 35 degrees C to the displayed temperature.
>>>>>
>>>>> You could either update the coretemp driver to a later version to
>>>>> fix this, or add the offset to /etc/sensors3.conf.
>>>>>
>>>>> Note that CPU temperatures are notoriously unreliable.
>>>>
>>>> "Inaccurate in the low temperature range" is a better way to describe
>>>> the situation IMHO. The coretemp values are reliably telling the user
>>>> when the temperature gets too close to the high limit.
>>>>
>>>> --
>>>> Jean Delvare
>>>
>>> Well, I'm aware of that, what I want to know is when the fan fails,
>>> these 40mm fans are not that reliable, unfortunately.
>>
>> Not sure if you can use the cpu temperature to predict if the fans are
> working
>> or not. The CPU can get pretty hot under load, even with the fans working.
>>
>> Your initial e-mail showed the fan speeds as 0. Are they broken or turned
> off
>> or not connected to the fan speed sensors ?
>>
>> Guenter
>
> Haven't got a clue why it says that they are 0, they definitely work now
> (changed the fans today),
> They are 3-pins and connected to the correct header.
>

Do you get a non-zero speed reported after replacing the fans ? If the reported
speed is still 0, I am not sure I understand what is going on.

Guenter


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Re: [lm-sensors] Whats wrong with LM-Sensors

[Tomas Larsson]

> -----Original Message-----
> From: Guenter Roeck [mailto:linux@roeck-us.net]
> Sent: Sunday, September 08, 2013 11:41 PM
> To: Tomas Larsson; LM Sensors
> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
> 
> On 09/08/2013 02:27 PM, Tomas Larsson wrote:
> >> -----Original Message-----
> >> From: Guenter Roeck [mailto:linux@roeck-us.net]
> >> Sent: Sunday, September 08, 2013 11:20 PM
> >> To: Tomas Larsson
> >> Cc: 'Jean Delvare'; lm-sensors@lm-sensors.org
> >> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
> >>
> >> On 09/08/2013 01:01 PM, Tomas Larsson wrote:
> >>>> -----Original Message-----
> >>>> From: Jean Delvare [mailto:khali@linux-fr.org]
> >>>> Sent: Sunday, September 08, 2013 9:10 PM
> >>>> To: Guenter Roeck
> >>>> Cc: Tomas Larsson; lm-sensors@lm-sensors.org
> >>>> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
> >>>>
> >>>> On Sun, 08 Sep 2013 11:58:39 -0700, Guenter Roeck wrote:
> >>>>> Different driver. Centos 6.4 uses the coretemp driver which gets
> >>>>> the temperature from the CPU directly. Unfortunately, Centos 6.4
> >>>>> is quite old when it comes to kernel version, and so is its
> >>>>> coretemp
> > driver.
> >>>>> The displayed temperatures in your version are all wrong; the
> >>>>> maximum
> >>>> temperature for Atom 330 is 125 degrees C, not 90 degrees C.
> >>>>> You'll have to add 35 degrees C to the displayed temperature.
> >>>>>
> >>>>> You could either update the coretemp driver to a later version to
> >>>>> fix this, or add the offset to /etc/sensors3.conf.
> >>>>>
> >>>>> Note that CPU temperatures are notoriously unreliable.
> >>>>
> >>>> "Inaccurate in the low temperature range" is a better way to
> >>>> describe the situation IMHO. The coretemp values are reliably
> >>>> telling the user when the temperature gets too close to the high
limit.
> >>>>
> >>>> --
> >>>> Jean Delvare
> >>>
> >>> Well, I'm aware of that, what I want to know is when the fan fails,
> >>> these 40mm fans are not that reliable, unfortunately.
> >>
> >> Not sure if you can use the cpu temperature to predict if the fans
> >> are
> > working
> >> or not. The CPU can get pretty hot under load, even with the fans
working.
> >>
> >> Your initial e-mail showed the fan speeds as 0. Are they broken or
> >> turned
> > off
> >> or not connected to the fan speed sensors ?
> >>
> >> Guenter
> >
> > Haven't got a clue why it says that they are 0, they definitely work
> > now (changed the fans today), They are 3-pins and connected to the
> > correct header.
> >
> 
> Do you get a non-zero speed reported after replacing the fans ? If the
> reported speed is still 0, I am not sure I understand what is going on.
> 
> Guenter

Yes.
Haven't checked what BIOS reports though, if it reports any fan-speeds.

Tomas Larsson.



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Re: [lm-sensors] Whats wrong with LM-Sensors

[Guenter Roeck]

On 09/08/2013 02:47 PM, Tomas Larsson wrote:
>> -----Original Message-----
>> From: Guenter Roeck [mailto:linux@roeck-us.net]
>> Sent: Sunday, September 08, 2013 11:41 PM
>> To: Tomas Larsson; LM Sensors
>> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
>>
>> On 09/08/2013 02:27 PM, Tomas Larsson wrote:
>>>> -----Original Message-----
>>>> From: Guenter Roeck [mailto:linux@roeck-us.net]
>>>> Sent: Sunday, September 08, 2013 11:20 PM
>>>> To: Tomas Larsson
>>>> Cc: 'Jean Delvare'; lm-sensors@lm-sensors.org
>>>> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
>>>>
>>>> On 09/08/2013 01:01 PM, Tomas Larsson wrote:
>>>>>> -----Original Message-----
>>>>>> From: Jean Delvare [mailto:khali@linux-fr.org]
>>>>>> Sent: Sunday, September 08, 2013 9:10 PM
>>>>>> To: Guenter Roeck
>>>>>> Cc: Tomas Larsson; lm-sensors@lm-sensors.org
>>>>>> Subject: Re: [lm-sensors] Whats wrong with LM-Sensors
>>>>>>
>>>>>> On Sun, 08 Sep 2013 11:58:39 -0700, Guenter Roeck wrote:
>>>>>>> Different driver. Centos 6.4 uses the coretemp driver which gets
>>>>>>> the temperature from the CPU directly. Unfortunately, Centos 6.4
>>>>>>> is quite old when it comes to kernel version, and so is its
>>>>>>> coretemp
>>> driver.
>>>>>>> The displayed temperatures in your version are all wrong; the
>>>>>>> maximum
>>>>>> temperature for Atom 330 is 125 degrees C, not 90 degrees C.
>>>>>>> You'll have to add 35 degrees C to the displayed temperature.
>>>>>>>
>>>>>>> You could either update the coretemp driver to a later version to
>>>>>>> fix this, or add the offset to /etc/sensors3.conf.
>>>>>>>
>>>>>>> Note that CPU temperatures are notoriously unreliable.
>>>>>>
>>>>>> "Inaccurate in the low temperature range" is a better way to
>>>>>> describe the situation IMHO. The coretemp values are reliably
>>>>>> telling the user when the temperature gets too close to the high
> limit.
>>>>>>
>>>>>> --
>>>>>> Jean Delvare
>>>>>
>>>>> Well, I'm aware of that, what I want to know is when the fan fails,
>>>>> these 40mm fans are not that reliable, unfortunately.
>>>>
>>>> Not sure if you can use the cpu temperature to predict if the fans
>>>> are
>>> working
>>>> or not. The CPU can get pretty hot under load, even with the fans
> working.
>>>>
>>>> Your initial e-mail showed the fan speeds as 0. Are they broken or
>>>> turned
>>> off
>>>> or not connected to the fan speed sensors ?
>>>>
>>>> Guenter
>>>
>>> Haven't got a clue why it says that they are 0, they definitely work
>>> now (changed the fans today), They are 3-pins and connected to the
>>> correct header.
>>>
>>
>> Do you get a non-zero speed reported after replacing the fans ? If the
>> reported speed is still 0, I am not sure I understand what is going on.
>>
>> Guenter
>
> Yes.
> Haven't checked what BIOS reports though, if it reports any fan-speeds.
>

Number of possibilities. Looks like the chip doesn't monitor fan speeds if pwm is 0.
So you should check for that. File should be /sys/class/hwmon/hwmonX/pwmY,
where X is either 0 or 1 and Y is 1 and 2.

Second, it may be that the fan divisor value (same directory) is too low or too high.
Try setting it to different values. 1, 2. 4, and 8 are permitted.

Third, it may be that the preload value is off. It is controlled with the "fanX_min"
attribute. Try setting a lower minimum speed (eg 500). If that doesn't work,
set the minimum speed to something really high.

In other words, play with the _div and _min attributes to see if you can get
a speed output.

But of course checking the BIOS would be a really good idea.

Guenter


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Re: [lm-sensors] Whats wrong with LM-Sensors

[Jean Delvare]

On Sun, 8 Sep 2013 23:28:11 +0200, Tomas Larsson wrote:
> On the Centos 6 mashine, I obviously don't get any fan-speed though.

I would just boot with acpi_enforce_resources=lax. I do not usually
recommend this, but given that you are already doing that on your
Centos 5 machines (because the resource conflict check was not
implemented at that time) you might as well do it on all machines.

-- 
Jean Delvare

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