Re: why does # of temperature sensors decrease in 3.11 (thinkfan config related)

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On 08/22/2013 09:32 AM, Jean Delvare wrote:
> Hi Toralf,
> 
> On Sun, 11 Aug 2013 10:46:03 +0200, Toralf Förster wrote:
>> I'm just wondering why the # of sensors at my ThinkPad T420 lowers from
>> 3 in kernel 3.10 :
>>
>> sensor /sys/devices/platform/coretemp.0/temp1_input     # physical id 0
>> sensor /sys/devices/platform/coretemp.0/temp2_input     # core 0
>> sensor /sys/devices/platform/coretemp.0/temp3_input     # core 1
>>
>> to just one for 3.11:
>>
>> /sys/class/hwmon/hwmon0/temp1_input
> 
> Most likely this is not even the same sensor. Check the value
> of /sys/class/hwmon/hwmon0/name to find out what this sensor is. Could
> be the graphics chip temperature readout, or an ACPI thermal zone.
> 
>> Do I miss a (new ?) kernel config ?
> 
> Output of "sensors" in both cases would help. Also make sure that your
> new kernel still has CONFIG_SENSORS_CORETEMP enabled, and that the
> coretemp driver is loaded if modular.
> 

$ zgrep CONFIG_SENSORS_CORETEMP /proc/config.gz
CONFIG_SENSORS_CORETEMP=m

Ah thx - a "modprobe coretemp" helps a lot - is this new ?

Now I do have the expected picture :

# sensors
acpitz-virtual-0
Adapter: Virtual device
temp1:        +51.0°C  (crit = +98.0°C)

thinkpad-isa-0000
Adapter: ISA adapter
fan1:        3120 RPM

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +58.0°C  (high = +86.0°C, crit = +100.0°C)
Core 0:         +58.0°C  (high = +86.0°C, crit = +100.0°C)
Core 1:         +56.0°C  (high = +86.0°C, crit = +100.0°C)


Why is that module not auto loaded ? Hhm ?

-- 
MfG/Sincerely
Toralf Förster
pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3

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