Mdthbs

I want to use i3status to display my CPU-Core temperatures (haswell i7). However the setting:

order += "cpu_temperature 1"

#...

cpu_temperature 1{

        format = "T: %degree °C"

}

#

doesn't display the correct core temperature. The numbers it shows seem to correspond to the value xsensors shows for temp1, if I change the 1 to 2 above it corresponds to xsensors temp2. Trying 3 or 4 doesn't have any effect. However I want to get the true core temperatures of all 4 cores with i3 status. How can I do this?

i3status

Using i3status I believe you can change your configuration slightly so that it gets the CPU's core temperature directly from /sys by providing a path to its value. So change your rule to something like this:

order += "cpu_temperature 1"

# and more if you like...

# order += "cpu_temperature 2"



#...   

cpu_temperature 1 {

        format = "T: %degrees °C"

        path = "/sys/devices/platform/coretemp.0/temp1_input"

}



# cpu_temperature 2 {

#        format = "T: %degrees °C"

#        path = "/sys/devices/platform/coretemp.0/temp2_input"

# }

Here are 4 other ways to get your temp:

/proc

$ cat /proc/acpi/thermal_zone/THM0/temperature

temperature:             72 C

acpi

$ acpi -t

Thermal 0: ok, 64.0 degrees C

From the acpi man page:

   -t |  --thermal

             show thermal information

/sys

$ cat /sys/bus/acpi/devices/LNXTHERM:01/thermal_zone/temp 

70000

lm_sensors

If you install the lmsensors package like so:

Fedora/CentOS/RHEL:

$ sudo yum install lm_sensors

Debian/Ubuntu:

$ sudo apt-get install lm-sensors

Detect your hardware:

$ sudo sensors-detect

You can also install the modules manually, for example:

$ sudo modprobe coretemp

$ modprobe i2c-i801

NOTE: The sensor-detect should detect your specific hardware, so you might need to modprobe <my driver> instead for the 2nd command above.

On my system I have the following i2c modules loaded:

$ lsmod | grep i2c

i2c_i801               11088  0 

i2c_algo_bit            5205  1 i915

i2c_core               27212  5 i2c_i801,i915,drm_kms_helper,drm,i2c_algo_bit

Now run the sensors app to query the resulting temperatures:

$ sudo sensors

acpitz-virtual-0

Adapter: Virtual device

temp1:        +68.0°C  (crit = +100.0°C)



thinkpad-isa-0000

Adapter: ISA adapter

fan1:        3831 RPM

temp1:        +68.0°C  

temp2:         +0.0°C  

temp3:         +0.0°C  

temp4:         +0.0°C  

temp5:         +0.0°C  

temp6:         +0.0°C  

temp7:         +0.0°C  

temp8:         +0.0°C  



coretemp-isa-0000

Adapter: ISA adapter

Core 0:       +56.0°C  (high = +95.0°C, crit = +105.0°C)



coretemp-isa-0002

Adapter: ISA adapter

Core 2:       +57.0°C  (high = +95.0°C, crit = +105.0°C)

This is on my Thinkpad T410 which has i5 M560. Here's one of the cores:

$ cat /proc/cpuinfo 

processor   : 0

vendor_id   : GenuineIntel

cpu family  : 6

model       : 37

model name  : Intel(R) Core(TM) i5 CPU       M 560  @ 2.67GHz

stepping    : 5

cpu MHz     : 1199.000

cache size  : 3072 KB

physical id : 0

siblings    : 4

core id     : 0

cpu cores   : 2

apicid      : 0

initial apicid  : 0

fpu     : yes

fpu_exception   : yes

cpuid level : 11

wp      : yes

flags       : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt aes lahf_lm ida arat tpr_shadow vnmi flexpriority ept vpid

bogomips    : 5319.22

clflush size    : 64

cache_alignment : 64

address sizes   : 36 bits physical, 48 bits virtual

power management:

In my case I had to read the value from:

/sys/devices/platform/coretemp.0/hwmon/hwmon2/temp1_input/sys/devices/platform/coretemp.0/hwmon/hwmon2/temp1_input

My i3status config:

cpu_temperature 0 {

              format = "T: %degrees °C"

              path = "/sys/devices/platform/coretemp.0/hwmon/hwmon2/temp1_input"

}