Re: k10temp driver reports 0 degree C

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On Mon, 23 Apr 2012 13:35:33 -0700, Crunchy Toast wrote:
> 
> I've installed and configured the latest lm_sensors on CentOS 6, but still does not show temp.
> =========================================
> 
> # sensors
> k10temp-pci-00c3
> Adapter: PCI adapter
> temp1: +0.0°C (high = +70.0°C)
> =========================================
> 
> Here is the output to sensors-detect
> 
> =========================================
> 
> # sensors-detect
> Stopping lm_sensors: [ OK ]
> # sensors-detect revision 6031 (2012-03-07 17:14:01 +0100)
> # System: MSI MS-7599 [4.0]
> # Board: MSI 870S-G46 (MS-7599)
> (...)
> Now follows a summary of the probes I have just done.
> Just press ENTER to continue:
> 
> Driver `k10temp' (autoloaded):
> * Chip `AMD Family 10h thermal sensors' (confidence: 9)
> 
> Driver `f71882fg':
> * ISA bus, address 0x600
> Chip `Fintek F71889ED Super IO Sensors' (confidence: 9)
> 
> Do you want to overwrite /etc/sysconfig/lm_sensors? (YES/no): yes
> Starting lm_sensors: loading module f71882fg [ OK ]
> 
> # sensors
> k10temp-pci-00c3
> Adapter: PCI adapter
> temp1: +0.0°C (high = +70.0°C)
> =========================================
> MB Model: MSI 870S-G46
> Any additional info can be provided if needed.
> Thanks in advance.

Did you check the kernel logs for a warning message when the k10temp
driver is loaded?

Which kernel is this? If it isn't too recent, you may want to try the
stand-alone version of the k10temp driver:
  http://khali.linux-fr.org/devel/misc/k10temp/

Instructions are at:
  http://khali.linux-fr.org/devel/misc/INSTALL

Which exact CPU is this? Note that some revisions of the AMD Family 10h
CPU are known to have broken sensors. From
http://www.lm-sensors.org/wiki/Devices:

"Embedded sensors are known to be unreliable on the DR-BA, DR-B2,
DR-B3, RB-C2 and HY-D0 revisions of the family 10h CPU, which will
never be supported."

So it might as well be a hardware defect and nothing the k10temp driver
can do.

That being said, you are supposed to have a Fintek F71889ED monitoring
chip, which you could use instead for temperature monitoring, unless
ACPI is blocking it. You'll need kernel 2.6.39 or later, or use a
stand-alone driver:
http://khali.linux-fr.org/devel/misc/f71882fg/

-- 
Jean Delvare
http://khali.linux-fr.org/wishlist.html

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