[MinnowBoard] Problem reading CPU temp in linux (yocto build)

Discussion:

Gerard Bucas

2015-04-29 20:04:54 UTC

Hi Everyone,

We use linux (custom built with yocto project) on minnowBoard MAX. Works great!

However, I have a problem reading the CPU core temperature of the E3825.
When I use this command line:

cat /sys/class/thermal/thermal_zone0/temp

It ALWAYS returns the value: 26800 (= 26.8C)

Linux kernel version: 3.19.2-yocto-standard

Build Configuration:
BB_VERSION = "1.27.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "intel-corei7-64" (recommended by Intel for Atom E38XX SoC & minnowBoard MAX)
DISTRO = "poky"
DISTRO_VERSION = "1.8+snapshot-20150429"

It looks like this value is hard-coded in the kernel! In researching this on the internet it seems that many people have this problem with a variety of Intel based CPU's/SoC's on a variety of different linux distributions.

Has anyone else solved this problem or do you know of another linux command line that would give me the CPU (chip) temperature?

I have tried to add the "lm-sensors" package but have had problems adding it to my yocto build as I can't seem to find the right "package group" that includes lm-sensors.
Any ideas/help would be MUCH appreciated!

Thanks
Gerard

2015-04-29 20:24:52 UTC

Permalink

Hi Gerard,

On my Debian:

sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)

So it’s the same (sensors is in lm-sensors package)

Regards

nb

Post by Gerard Bucas
Hi Everyone,
We use linux (custom built with yocto project) on minnowBoard MAX. Works great!
However, I have a problem reading the CPU core temperature of the E3825.
cat /sys/class/thermal/thermal_zone0/temp
It ALWAYS returns the value: 26800 (= 26.8C)
Linux kernel version: 3.19.2-yocto-standard
BB_VERSION = "1.27.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "intel-corei7-64" (recommended by Intel for Atom E38XX SoC & minnowBoard MAX)
DISTRO = "poky"
DISTRO_VERSION = "1.8+snapshot-20150429"
It looks like this value is hard-coded in the kernel! In researching this on the internet it seems that many people have this problem with a variety of Intel based CPU's/SoC's on a variety of different linux distributions.
Has anyone else solved this problem or do you know of another linux command line that would give me the CPU (chip) temperature?
I have tried to add the "lm-sensors" package but have had problems adding it to my yocto build as I can't seem to find the right "package group" that includes lm-sensors.
Any ideas/help would be MUCH appreciated!
Thanks
Gerard
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

Gerard Bucas

2015-04-29 20:38:28 UTC

Permalink

Hi nb

Thanks but I see that your temp ALSO returns 26.8C (same as mine!!). That is the 'problem', no matter what the chip temp is (could be too hot to even touch under heavy load) - the temp returned is ALWAYS 26.8C!!!

Have a look and let me know if that is also what you observe (seems like it from what you wrote as it is too much of a co-incidence that you get EXACTLY the same value as I do - hot or cold!!)

Thanks

Gerard

Post by nb
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it’s the same (sensors is in lm-sensors package)
Regards
nb

Gerard Bucas

2015-04-29 20:45:41 UTC

Permalink

PS:

But I just noticed that your "ISA adapter" temps look CORRECT!!!

Post by Gerard Bucas
cat /sys/class/thermal/thermal_zone0/temp

Doesn't work (it works on other similar builds on i.MX6 based projects that we have done).

Guess I will have to figure out how to add lm-sensors to my build. :)

Regards

Gerard

-----Original Message-----
From: Gerard Bucas [mailto:***@tekmagic.net]
Sent: Wednesday, April 29, 2015 4:38 PM
To: nb
Cc: MinnowBoard Development and Community Discussion
Subject: Re: [MinnowBoard] Problem reading CPU temp in linux (yocto build)

Hi nb

Thanks but I see that your temp ALSO returns 26.8C (same as mine!!). That is the 'problem', no matter what the chip temp is (could be too hot to even touch under heavy load) - the temp returned is ALWAYS 26.8C!!!

Have a look and let me know if that is also what you observe (seems like it from what you wrote as it is too much of a co-incidence that you get EXACTLY the same value as I do - hot or cold!!)

Thanks

Gerard

Post by Gerard Bucas
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it’s the same (sensors is in lm-sensors package)
Regards
nb

2015-04-29 21:46:25 UTC

Permalink

Hi,

I always have same value (26.8°C), whatever the cpu does.

Regards

nb

Post by Gerard Bucas
Hi nb
Thanks but I see that your temp ALSO returns 26.8C (same as mine!!). That is the 'problem', no matter what the chip temp is (could be too hot to even touch under heavy load) - the temp returned is ALWAYS 26.8C!!!
Have a look and let me know if that is also what you observe (seems like it from what you wrote as it is too much of a co-incidence that you get EXACTLY the same value as I do - hot or cold!!)
Thanks
Gerard

Gerard Bucas

2015-04-29 22:04:19 UTC

Permalink

Thanks - that's what I though (& also see!)

I wonder how we can fix that!?

Curious...

Gerard

Post by nb
Hi,
I always have same value (26.8°C), whatever the cpu does.
Regards
nb

Zhang, Austin

2015-04-30 08:30:43 UTC

Permalink

That value 26800 is one gotten from BIOS ACPI method which OS will call when you do something like 'cat /sys/...'.

So that means: either the BIOS ACPI routine ran into trouble so always return one fixed value, or the ACPI method was not implemented correctly at all.

Thanks.

-----Original Message-----
From: elinux-MinnowBoard [mailto:elinux-minnowboard-***@lists.elinux.org] On Behalf Of Gerard Bucas
Sent: Thursday, April 30, 2015 6:04 AM
To: nb
Cc: MinnowBoard Development and Community Discussion
Subject: Re: [MinnowBoard] Problem reading CPU temp in linux (yocto build)

Thanks - that's what I though (& also see!)

I wonder how we can fix that!?

Curious...

Gerard

Post by nb
Hi,
I always have same value (26.8°C), whatever the cpu does.
Regards
nb

_______________________________________________
elinux-MinnowBoard mailing list
elinux-***@lists.elinux.org
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

s0krat3s

2015-04-30 09:07:24 UTC

Permalink

Hello @ all

i have a little problem with the setup from iÂ²s on the minnowboard max.

The setup at the time is

archlinux with costum kernel 3.18.6

and a bunch of software

-

the setup i want is to sent audio over iÂ²s to a dsp without a codec

the problem with masterclock is not importent for my setup

mfg

s0krat3s

2015-05-01 07:26:41 UTC

Permalink

Darren Hart

2015-04-30 15:07:11 UTC

Permalink

The "core" temps appear to be correct, while the acpitz driver does not
appear to be providing updates. I will raise this with the driver teams.
Thank you for reporting.

Post by nb
Hi,
I always have same value (26.8°C), whatever the cpu does.
Regards
nb

Post by Gerard Bucas
Hi nb
Thanks but I see that your temp ALSO returns 26.8C (same as mine!!).
That is the 'problem', no matter what the chip temp is (could be too hot
to even touch under heavy load) - the temp returned is ALWAYS 26.8C!!!
Have a look and let me know if that is also what you observe (seems
like it from what you wrote as it is too much of a co-incidence that you
get EXACTLY the same value as I do - hot or cold!!)
Thanks
Gerard

Post by nb
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it¹s the same (sensors is in lm-sensors package)
Regards
nb

Post by Gerard Bucas
Hi Everyone,
We use linux (custom built with yocto project) on minnowBoard MAX. Works great!
However, I have a problem reading the CPU core temperature of the E3825.
cat /sys/class/thermal/thermal_zone0/temp
It ALWAYS returns the value: 26800 (= 26.8C)
Linux kernel version: 3.19.2-yocto-standard
BB_VERSION = "1.27.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "intel-corei7-64" (recommended by Intel for Atom
E38XX SoC & minnowBoard MAX)
DISTRO = "poky"
DISTRO_VERSION = "1.8+snapshot-20150429"
It looks like this value is hard-coded in the kernel! In researching
this on the internet it seems that many people have this problem with
a variety of Intel based CPU's/SoC's on a variety of different linux
distributions.
Has anyone else solved this problem or do you know of another linux
command line that would give me the CPU (chip) temperature?
I have tried to add the "lm-sensors" package but have had problems
adding it to my yocto build as I can't seem to find the right "package
group" that includes lm-sensors.
Any ideas/help would be MUCH appreciated!
Thanks
Gerard
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center

Gerard Bucas

2015-04-30 15:46:26 UTC

Permalink

Hi Darren

For Some reason or other I can't find find ANY way to read the Core temperatures (I have multiple boards) as even LMSENSORS doesn't give me that 'ISA Adapter' related core temps that nb reported in this thread.

Not sure what I'm doing wrong - LMSENSORS seems to be working (went through the whole 'sensors-detect' sequence) but it (also) only finds that 'virtual temp' device which also always returns that 26800 value.

I am using latest 0.79 firmware (will add to bug database).

Any ideas how else I can read core temps (yocto Linux build)?

Thanks

Gerard

Post by Darren Hart
The "core" temps appear to be correct, while the acpitz driver does not
appear to be providing updates. I will raise this with the driver teams.
Thank you for reporting.

Post by nb
Hi,
I always have same value (26.8°C), whatever the cpu does.
Regards
nb

Post by Gerard Bucas
Hi nb
Thanks but I see that your temp ALSO returns 26.8C (same as mine!!).
That is the 'problem', no matter what the chip temp is (could be too hot
to even touch under heavy load) - the temp returned is ALWAYS 26.8C!!!
Have a look and let me know if that is also what you observe (seems
like it from what you wrote as it is too much of a co-incidence that you
get EXACTLY the same value as I do - hot or cold!!)
Thanks
Gerard

Post by nb
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it¹s the same (sensors is in lm-sensors package)
Regards
nb

Post by Gerard Bucas
Hi Everyone,
We use linux (custom built with yocto project) on minnowBoard MAX. Works great!
However, I have a problem reading the CPU core temperature of the E3825.
cat /sys/class/thermal/thermal_zone0/temp
It ALWAYS returns the value: 26800 (= 26.8C)
Linux kernel version: 3.19.2-yocto-standard
BB_VERSION = "1.27.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "intel-corei7-64" (recommended by Intel for Atom
E38XX SoC & minnowBoard MAX)
DISTRO = "poky"
DISTRO_VERSION = "1.8+snapshot-20150429"
It looks like this value is hard-coded in the kernel! In researching
this on the internet it seems that many people have this problem with
a variety of Intel based CPU's/SoC's on a variety of different linux
distributions.
Has anyone else solved this problem or do you know of another linux
command line that would give me the CPU (chip) temperature?
I have tried to add the "lm-sensors" package but have had problems
adding it to my yocto build as I can't seem to find the right "package
group" that includes lm-sensors.
Any ideas/help would be MUCH appreciated!
Thanks
Gerard
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center

Darren Hart

2015-04-30 16:04:58 UTC

Permalink

You will need the.... coretemp module loaded or built-in. You can check if
it's loaded with lsmod, and if it's configured in by looking for
CONFIG_SENSORS_CORETEMP in /proc/config.gz:

$ zcat /proc/config.gz | grep CORETEMP

Thanks,

Darren

Post by Gerard Bucas
Hi Darren
For Some reason or other I can't find find ANY way to read the Core
temperatures (I have multiple boards) as even LMSENSORS doesn't give me
that 'ISA Adapter' related core temps that nb reported in this thread.
Not sure what I'm doing wrong - LMSENSORS seems to be working (went
through the whole 'sensors-detect' sequence) but it (also) only finds
that 'virtual temp' device which also always returns that 26800 value.
I am using latest 0.79 firmware (will add to bug database).
Any ideas how else I can read core temps (yocto Linux build)?
Thanks
Gerard

Post by Darren Hart
The "core" temps appear to be correct, while the acpitz driver does not
appear to be providing updates. I will raise this with the driver teams.
Thank you for reporting.

Post by nb
Hi,
I always have same value (26.8°C), whatever the cpu does.
Regards
nb

Post by Gerard Bucas
Hi nb
Thanks but I see that your temp ALSO returns 26.8C (same as mine!!).
That is the 'problem', no matter what the chip temp is (could be too hot
to even touch under heavy load) - the temp returned is ALWAYS 26.8C!!!
Have a look and let me know if that is also what you observe (seems
like it from what you wrote as it is too much of a co-incidence that you
get EXACTLY the same value as I do - hot or cold!!)
Thanks
Gerard

Post by nb
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it¹s the same (sensors is in lm-sensors package)
Regards
nb

Post by Gerard Bucas
écrit
Hi Everyone,
We use linux (custom built with yocto project) on minnowBoard MAX. Works great!
However, I have a problem reading the CPU core temperature of the E3825.
cat /sys/class/thermal/thermal_zone0/temp
It ALWAYS returns the value: 26800 (= 26.8C)
Linux kernel version: 3.19.2-yocto-standard
BB_VERSION = "1.27.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "intel-corei7-64" (recommended by Intel for Atom
E38XX SoC & minnowBoard MAX)
DISTRO = "poky"
DISTRO_VERSION = "1.8+snapshot-20150429"
It looks like this value is hard-coded in the kernel! In researching
this on the internet it seems that many people have this problem with
a variety of Intel based CPU's/SoC's on a variety of different linux
distributions.
Has anyone else solved this problem or do you know of another linux
command line that would give me the CPU (chip) temperature?
I have tried to add the "lm-sensors" package but have had problems
adding it to my yocto build as I can't seem to find the right "package
group" that includes lm-sensors.
Any ideas/help would be MUCH appreciated!
Thanks
Gerard
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center

2015-04-30 16:30:13 UTC

Permalink

CONFIG_SENSORS_CORETEMP=m

and in lsmod

coretemp 12820 0

Post by Darren Hart
You will need the.... coretemp module loaded or built-in. You can check if
it's loaded with lsmod, and if it's configured in by looking for
$ zcat /proc/config.gz | grep CORETEMP
Thanks,
Darren

Post by Darren Hart
The "core" temps appear to be correct, while the acpitz driver does not
appear to be providing updates. I will raise this with the driver teams.
Thank you for reporting.

Post by nb
Hi,
I always have same value (26.8°C), whatever the cpu does.
Regards
nb

Post by Gerard Bucas
Hi nb
Thanks but I see that your temp ALSO returns 26.8C (same as mine!!).
That is the 'problem', no matter what the chip temp is (could be too hot
to even touch under heavy load) - the temp returned is ALWAYS 26.8C!!!
Have a look and let me know if that is also what you observe (seems
like it from what you wrote as it is too much of a co-incidence that you
get EXACTLY the same value as I do - hot or cold!!)
Thanks
Gerard

Post by nb
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it¹s the same (sensors is in lm-sensors package)
Regards
nb

_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center

--
Darren Hart
Intel Open Source Technology Center
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

Darren Hart

2015-04-30 16:52:41 UTC

Permalink

Coretemp presents a sysfs interface, start navigating under:

/sys/bus/platform/drivers/coretemp/

And I think you'll find what you're looking for.

Post by nb
CONFIG_SENSORS_CORETEMP=m
and in lsmod
coretemp 12820 0

Post by Darren Hart
The "core" temps appear to be correct, while the acpitz driver does not
appear to be providing updates. I will raise this with the driver teams.
Thank you for reporting.

Post by nb
Hi,
I always have same value (26.8°C), whatever the cpu does.
Regards
nb

Post by Gerard Bucas
écrit
Hi nb
Thanks but I see that your temp ALSO returns 26.8C (same as mine!!).
That is the 'problem', no matter what the chip temp is (could be too hot
to even touch under heavy load) - the temp returned is ALWAYS 26.8C!!!
Have a look and let me know if that is also what you observe (seems
like it from what you wrote as it is too much of a co-incidence that you
get EXACTLY the same value as I do - hot or cold!!)
Thanks
Gerard

Post by nb
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it¹s the same (sensors is in lm-sensors package)
Regards
nb

Post by Gerard Bucas
écrit
Hi Everyone,
We use linux (custom built with yocto project) on minnowBoard MAX.
Works great!
However, I have a problem reading the CPU core temperature of the E3825.
cat /sys/class/thermal/thermal_zone0/temp
It ALWAYS returns the value: 26800 (= 26.8C)
Linux kernel version: 3.19.2-yocto-standard
BB_VERSION = "1.27.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "intel-corei7-64" (recommended by Intel for Atom
E38XX SoC & minnowBoard MAX)
DISTRO = "poky"
DISTRO_VERSION = "1.8+snapshot-20150429"
It looks like this value is hard-coded in the kernel! In researching
this on the internet it seems that many people have this problem with
a variety of Intel based CPU's/SoC's on a variety of different linux
distributions.
Has anyone else solved this problem or do you know of another linux
command line that would give me the CPU (chip) temperature?
I have tried to add the "lm-sensors" package but have had problems
adding it to my yocto build as I can't seem to find the right "package
group" that includes lm-sensors.
Any ideas/help would be MUCH appreciated!
Thanks
Gerard
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center

--
Darren Hart
Intel Open Source Technology Center
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
elinux-MinnowBoard mailing list
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--
Darren Hart
Intel Open Source Technology Center

Gerard Bucas

2015-04-30 17:05:54 UTC

Permalink

Darren,

I don't "see" that "coretemp" there!

ls -l /sys/bus/platform/drivers

total 0
drwxr-xr-x 2 root root 0 Apr 30 16:50 acpi-fan
drwxr-xr-x 2 root root 0 Apr 30 16:50 alarmtimer
drwxr-xr-x 2 root root 0 Apr 30 16:50 byt_gpio
drwxr-xr-x 2 root root 0 Apr 30 16:50 cherryview-pinctrl
drwxr-xr-x 2 root root 0 Apr 30 16:50 clk-lpt
drwxr-xr-x 2 root root 0 Apr 30 16:50 dw-apb-uart
drwxr-xr-x 2 root root 0 Apr 30 16:50 dwc3
drwxr-xr-x 2 root root 0 Apr 30 16:50 efi-framebuffer
drwxr-xr-x 2 root root 0 Apr 30 16:50 generic-bl
drwxr-xr-x 2 root root 0 Apr 30 16:50 iTCO_wdt
drwxr-xr-x 2 root root 0 Apr 30 16:50 leds-gpio
drwxr-xr-x 2 root root 0 Apr 30 16:50 sdhci-acpi
drwxr-xr-x 2 root root 0 Apr 30 16:50 serial8250
drwxr-xr-x 2 root root 0 Apr 30 16:50 usb_phy_generic
drwxr-xr-x 2 root root 0 Apr 30 16:50 vesa-framebuffer
drwxr-xr-x 2 root root 0 Apr 30 16:50 xhci-hcd
***@intel-corei7-64:/sys/bus/platform/drivers#

Guess I am missing something in my build!?

Gerard

-----Original Message-----
From: elinux-MinnowBoard
[mailto:elinux-minnowboard-***@lists.elinux.org] On Behalf Of Darren
Hart
Sent: Thursday, April 30, 2015 12:53 PM
To: MinnowBoard Development and Community Discussion
Subject: Re: [MinnowBoard] Problem reading CPU temp in linux (yocto build)

Coretemp presents a sysfs interface, start navigating under:

/sys/bus/platform/drivers/coretemp/

And I think you'll find what you're looking for.

CONFIG_SENSORS_CORETEMP=m
and in lsmod
coretemp 12820 0

Post by Darren Hart
You will need the.... coretemp module loaded or built-in. You can
check if it's loaded with lsmod, and if it's configured in by looking
$ zcat /proc/config.gz | grep CORETEMP
Thanks,
Darren

thread.

Post by Darren Hart

Post by Gerard Bucas
Not sure what I'm doing wrong - LMSENSORS seems to be working (went
through the whole 'sensors-detect' sequence) but it (also) only
finds that 'virtual temp' device which also always returns that 26800

value.

Post by Darren Hart

Post by Gerard Bucas
I am using latest 0.79 firmware (will add to bug database).
Any ideas how else I can read core temps (yocto Linux build)?
Thanks
Gerard

Post by Darren Hart
The "core" temps appear to be correct, while the acpitz driver does
not appear to be providing updates. I will raise this with the
driver teams.
Thank you for reporting.

Post by nb
Hi,
I always have same value (26.8°C), whatever the cpu does.
Regards
nb

Post by Gerard Bucas
écrit
Hi nb
Thanks but I see that your temp ALSO returns 26.8C (same as mine!!).
That is the 'problem', no matter what the chip temp is (could be
too hot to even touch under heavy load) - the temp returned is
ALWAYS 26.8C!!!
Have a look and let me know if that is also what you observe
(seems like it from what you wrote as it is too much of a
co-incidence that you get EXACTLY the same value as I do - hot or
cold!!)
Thanks
Gerard

Post by nb
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it¹s the same (sensors is in lm-sensors package)
Regards
nb

Post by Gerard Bucas
écrit
Hi Everyone,
We use linux (custom built with yocto project) on minnowBoard MAX.
Works great!
However, I have a problem reading the CPU core temperature of the E3825.
cat /sys/class/thermal/thermal_zone0/temp
It ALWAYS returns the value: 26800 (= 26.8C)
Linux kernel version: 3.19.2-yocto-standard
BB_VERSION = "1.27.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "intel-corei7-64" (recommended by Intel for Atom
E38XX SoC & minnowBoard MAX)
DISTRO = "poky"
DISTRO_VERSION = "1.8+snapshot-20150429"
It looks like this value is hard-coded in the kernel! In
researching this on the internet it seems that many people have
this problem with a variety of Intel based CPU's/SoC's on a
variety of different linux distributions.
Has anyone else solved this problem or do you know of another
linux command line that would give me the CPU (chip)
temperature?
I have tried to add the "lm-sensors" package but have had
problems adding it to my yocto build as I can't seem to find
the right "package group" that includes lm-sensors.
Any ideas/help would be MUCH appreciated!
Thanks
Gerard
_______________________________________________
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http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
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http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center

--
Darren Hart
Intel Open Source Technology Center
_______________________________________________
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http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
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--
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Gerard Bucas

2015-04-30 17:10:52 UTC

Permalink

Hi nb

Thanks for all your great feedback.

I don't have that CONFIG_SENSORS_CORETEMP file.

It seems I must be missing some key "part" of lmsensors...

I ran "sensors-detect" and then when I run "sensors" I only get:

acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8 C (crit = +90.0 C)

Any ideas what else I need to do or install?

My yocto "local.conf" build file includes the following for adding "lmsensors":

IMAGE_INSTALL_append = " \
lmsensors-libsensors \
lmsensors-sensors \
lmsensors-sensord \
lmsensors-fancontrol \
lmsensors-sensorsdetect \
lmsensors-sensorsconfconvert \
lmsensors-pwmconfig \
lmsensors-isatools \
lmsensors-config-cgi \
"
Would REALLY appreciate any help/pointers to get this working...

THANKS!

Gerad

-----Original Message-----
From: nb [mailto:***@dagami.org]
Sent: Thursday, April 30, 2015 12:30 PM
To: MinnowBoard Development and Community Discussion
Cc: Gerard Bucas
Subject: Re: [MinnowBoard] Problem reading CPU temp in linux (yocto build)

CONFIG_SENSORS_CORETEMP=m

and in lsmod

coretemp 12820 0

Post by Gerard Bucas
Hi Darren
For Some reason or other I can't find find ANY way to read the Core
temperatures (I have multiple boards) as even LMSENSORS doesn't give
me that 'ISA Adapter' related core temps that nb reported in this thread.
Not sure what I'm doing wrong - LMSENSORS seems to be working (went
through the whole 'sensors-detect' sequence) but it (also) only finds
that 'virtual temp' device which also always returns that 26800 value.
I am using latest 0.79 firmware (will add to bug database).
Any ideas how else I can read core temps (yocto Linux build)?
Thanks
Gerard

Post by Darren Hart
The "core" temps appear to be correct, while the acpitz driver does
not appear to be providing updates. I will raise this with the driver teams.
Thank you for reporting.

Post by nb
Hi,
I always have same value (26.8°C), whatever the cpu does.
Regards
nb

Post by Gerard Bucas
écrit
Hi nb
Thanks but I see that your temp ALSO returns 26.8C (same as mine!!).
That is the 'problem', no matter what the chip temp is (could be
too hot to even touch under heavy load) - the temp returned is
ALWAYS 26.8C!!!
Have a look and let me know if that is also what you observe
(seems like it from what you wrote as it is too much of a
co-incidence that you get EXACTLY the same value as I do - hot or
cold!!)
Thanks
Gerard

Post by nb
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it¹s the same (sensors is in lm-sensors package)
Regards
nb

Post by Gerard Bucas
écrit
Hi Everyone,
We use linux (custom built with yocto project) on minnowBoard MAX. Works great!
However, I have a problem reading the CPU core temperature of the E3825.
cat /sys/class/thermal/thermal_zone0/temp
It ALWAYS returns the value: 26800 (= 26.8C)
Linux kernel version: 3.19.2-yocto-standard
BB_VERSION = "1.27.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "intel-corei7-64" (recommended by Intel for Atom
E38XX SoC & minnowBoard MAX)
DISTRO = "poky"
DISTRO_VERSION = "1.8+snapshot-20150429"
It looks like this value is hard-coded in the kernel! In
researching this on the internet it seems that many people have
this problem with a variety of Intel based CPU's/SoC's on a
variety of different linux distributions.
Has anyone else solved this problem or do you know of another
linux command line that would give me the CPU (chip) temperature?
I have tried to add the "lm-sensors" package but have had
problems adding it to my yocto build as I can't seem to find the
right "package group" that includes lm-sensors.
Any ideas/help would be MUCH appreciated!
Thanks
Gerard
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center

--
Darren Hart
Intel Open Source Technology Center
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

Darren Hart

2015-04-30 20:11:33 UTC

Permalink

You mentioned having core temp loaded, but also said you don't have the
"CONFIG_SENSORS_CORETEMP" file (it's not a file, it's a kernel config
option which should be listed in /proc/config.gz if you are using a
linux-yocto kernel. Strange that you have the module loaded, but do not
see the /sys entries - I don't know how to explain that.

I'm out of time today - I'll try to have another look on Monday if nobody
else jumps in.

Post by Gerard Bucas
Hi nb
Thanks for all your great feedback.
I don't have that CONFIG_SENSORS_CORETEMP file.
It seems I must be missing some key "part" of lmsensors...
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8 C (crit = +90.0 C)
Any ideas what else I need to do or install?
IMAGE_INSTALL_append = " \
lmsensors-libsensors \
lmsensors-sensors \
lmsensors-sensord \
lmsensors-fancontrol \
lmsensors-sensorsdetect \
lmsensors-sensorsconfconvert \
lmsensors-pwmconfig \
lmsensors-isatools \
lmsensors-config-cgi \
"
Would REALLY appreciate any help/pointers to get this working...
THANKS!
Gerad
-----Original Message-----
Sent: Thursday, April 30, 2015 12:30 PM
To: MinnowBoard Development and Community Discussion
Cc: Gerard Bucas
Subject: Re: [MinnowBoard] Problem reading CPU temp in linux (yocto build)
CONFIG_SENSORS_CORETEMP=m
and in lsmod
coretemp 12820 0

Post by Gerard Bucas
Hi Darren
For Some reason or other I can't find find ANY way to read the Core
temperatures (I have multiple boards) as even LMSENSORS doesn't give
me that 'ISA Adapter' related core temps that nb reported in this thread.
Not sure what I'm doing wrong - LMSENSORS seems to be working (went
through the whole 'sensors-detect' sequence) but it (also) only finds
that 'virtual temp' device which also always returns that 26800 value.
I am using latest 0.79 firmware (will add to bug database).
Any ideas how else I can read core temps (yocto Linux build)?
Thanks
Gerard

Post by Darren Hart
The "core" temps appear to be correct, while the acpitz driver does
not appear to be providing updates. I will raise this with the driver teams.
Thank you for reporting.

Post by nb
Hi,
I always have same value (26.8°C), whatever the cpu does.
Regards
nb

Post by Gerard Bucas
écrit
Hi nb
Thanks but I see that your temp ALSO returns 26.8C (same as mine!!).
That is the 'problem', no matter what the chip temp is (could be
too hot to even touch under heavy load) - the temp returned is
ALWAYS 26.8C!!!
Have a look and let me know if that is also what you observe
(seems like it from what you wrote as it is too much of a
co-incidence that you get EXACTLY the same value as I do - hot or
cold!!)
Thanks
Gerard

Post by nb
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it¹s the same (sensors is in lm-sensors package)
Regards
nb

Post by Gerard Bucas
écrit
Hi Everyone,
We use linux (custom built with yocto project) on minnowBoard MAX.
Works great!
However, I have a problem reading the CPU core temperature of the E3825.
cat /sys/class/thermal/thermal_zone0/temp
It ALWAYS returns the value: 26800 (= 26.8C)
Linux kernel version: 3.19.2-yocto-standard
BB_VERSION = "1.27.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "intel-corei7-64" (recommended by Intel for Atom
E38XX SoC & minnowBoard MAX)
DISTRO = "poky"
DISTRO_VERSION = "1.8+snapshot-20150429"
It looks like this value is hard-coded in the kernel! In
researching this on the internet it seems that many people have
this problem with a variety of Intel based CPU's/SoC's on a
variety of different linux distributions.
Has anyone else solved this problem or do you know of another
linux command line that would give me the CPU (chip) temperature?
I have tried to add the "lm-sensors" package but have had
problems adding it to my yocto build as I can't seem to find the
right "package group" that includes lm-sensors.
Any ideas/help would be MUCH appreciated!
Thanks
Gerard
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center

--
Darren Hart
Intel Open Source Technology Center
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center

Gerard Bucas

2015-05-01 00:15:24 UTC

Permalink

Thanks Darren

Don't worry - managed to get to the bottom of it, thanks to this good
article (in Japanese - which I can't read - but great pictures!):
http://kronus9.sblo.jp/article/115370184.html

It turns out this kernel config flag needed to be set:
CONFIG_SENSORS_CORETEMP=m

Interesting to observe:
that "zcat /proc/config.gz | grep CORETEMP" now returns
"CONFIG_SENSORS_CORETEMP=y"

BUT lsmod shows no modules installed and I still don't have the
CONFIG_SENSORS_CORETEMP file and I don't see "coreboot" anywhere on my
target system!
BUT "sensors" now works (after sensors-detect) as it shows the same "ISA
adapter" values that nb listed. So I also now see:

acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8 C (crit = +90.0 C)

coretemp-isa-0000
Adapter: ISA adapter
Core 0: +68.0 C (high = +127.0 C, crit = +127.0 C)
Core 2: +67.0 C (high = +127.0 C, crit = +127.0 C)

Thanks for all your help.

Gerard

-----Original Message-----
From: Darren Hart [mailto:***@linux.intel.com]
Sent: Thursday, April 30, 2015 4:12 PM
To: ***@tekmagic.net; MinnowBoard Development and Community Discussion;
'nb'
Subject: Re: [MinnowBoard] Problem reading CPU temp in linux (yocto build)

You mentioned having core temp loaded, but also said you don't have the
"CONFIG_SENSORS_CORETEMP" file (it's not a file, it's a kernel config option
which should be listed in /proc/config.gz if you are using a linux-yocto
kernel. Strange that you have the module loaded, but do not see the /sys
entries - I don't know how to explain that.

I'm out of time today - I'll try to have another look on Monday if nobody
else jumps in.

Post by Gerard Bucas
Hi Darren
For Some reason or other I can't find find ANY way to read the Core
temperatures (I have multiple boards) as even LMSENSORS doesn't give
me that 'ISA Adapter' related core temps that nb reported in this thread.
Not sure what I'm doing wrong - LMSENSORS seems to be working (went
through the whole 'sensors-detect' sequence) but it (also) only
finds that 'virtual temp' device which also always returns that 26800

value.

Post by Gerard Bucas

Post by Darren Hart

Post by Gerard Bucas
I am using latest 0.79 firmware (will add to bug database).
Any ideas how else I can read core temps (yocto Linux build)?
Thanks
Gerard

Post by Darren Hart
The "core" temps appear to be correct, while the acpitz driver does
not appear to be providing updates. I will raise this with the driver teams.
Thank you for reporting.

Post by nb
Hi,
I always have same value (26.8°C), whatever the cpu does.
Regards
nb

Post by Gerard Bucas
écrit
Hi nb
Thanks but I see that your temp ALSO returns 26.8C (same as mine!!).
That is the 'problem', no matter what the chip temp is (could be
too hot to even touch under heavy load) - the temp returned is
ALWAYS 26.8C!!!
Have a look and let me know if that is also what you observe
(seems like it from what you wrote as it is too much of a
co-incidence that you get EXACTLY the same value as I do - hot or
cold!!)
Thanks
Gerard

Post by nb
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it¹s the same (sensors is in lm-sensors package)
Regards
nb

Post by Gerard Bucas
écrit
Hi Everyone,
We use linux (custom built with yocto project) on minnowBoard MAX.
Works great!
However, I have a problem reading the CPU core temperature of the E3825.
cat /sys/class/thermal/thermal_zone0/temp
It ALWAYS returns the value: 26800 (= 26.8C)
Linux kernel version: 3.19.2-yocto-standard
BB_VERSION = "1.27.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "intel-corei7-64" (recommended by Intel for Atom
E38XX SoC & minnowBoard MAX)
DISTRO = "poky"
DISTRO_VERSION = "1.8+snapshot-20150429"
It looks like this value is hard-coded in the kernel! In
researching this on the internet it seems that many people have
this problem with a variety of Intel based CPU's/SoC's on a
variety of different linux distributions.
Has anyone else solved this problem or do you know of another
linux command line that would give me the CPU (chip) temperature?
I have tried to add the "lm-sensors" package but have had
problems adding it to my yocto build as I can't seem to find
the right "package group" that includes lm-sensors.
Any ideas/help would be MUCH appreciated!
Thanks
Gerard
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center

--
Darren Hart
Intel Open Source Technology Center
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
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http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center

2015-05-01 06:29:11 UTC

Permalink

Hi Gerard,

"CONFIG_SENSORS_CORETEMP=y" means it is included _into_ the kernel, so you can’t have it in modules too.
This is « normal », it’s one or the other.

I don’t know about which CONFIG_SENSORS_CORETEMP file you talk, and why we should have one.

He’s what contains my /sys/bus/platform/drivers/coretemp directory:

ls -Rl /sys/bus/platform/drivers/coretemp
/sys/bus/platform/drivers/coretemp:
total 0
--w------- 1 root root 4096 avril 30 19:15 bind
lrwxrwxrwx 1 root root 0 avril 30 19:15 coretemp.0 -> ../../../../devices/platform/coretemp.0
lrwxrwxrwx 1 root root 0 avril 30 19:15 module -> ../../../../module/coretemp
--w------- 1 root root 4096 avril 30 19:15 uevent
--w------- 1 root root 4096 avril 30 19:15 unbind

Regards

Post by Gerard Bucas
Thanks Darren
Don't worry - managed to get to the bottom of it, thanks to this good
http://kronus9.sblo.jp/article/115370184.html
CONFIG_SENSORS_CORETEMP=m
that "zcat /proc/config.gz | grep CORETEMP" now returns
"CONFIG_SENSORS_CORETEMP=y"
BUT lsmod shows no modules installed and I still don't have the
CONFIG_SENSORS_CORETEMP file and I don't see "coreboot" anywhere on my
target system!
BUT "sensors" now works (after sensors-detect) as it shows the same "ISA
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8 C (crit = +90.0 C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +68.0 C (high = +127.0 C, crit = +127.0 C)
Core 2: +67.0 C (high = +127.0 C, crit = +127.0 C)
Thanks for all your help.
Gerard
-----Original Message-----
Sent: Thursday, April 30, 2015 4:12 PM
'nb'
Subject: Re: [MinnowBoard] Problem reading CPU temp in linux (yocto build)
You mentioned having core temp loaded, but also said you don't have the
"CONFIG_SENSORS_CORETEMP" file (it's not a file, it's a kernel config option
which should be listed in /proc/config.gz if you are using a linux-yocto
kernel. Strange that you have the module loaded, but do not see the /sys
entries - I don't know how to explain that.
I'm out of time today - I'll try to have another look on Monday if nobody
else jumps in.

Post by Gerard Bucas
Hi Darren
For Some reason or other I can't find find ANY way to read the Core
temperatures (I have multiple boards) as even LMSENSORS doesn't give
me that 'ISA Adapter' related core temps that nb reported in this thread.
Not sure what I'm doing wrong - LMSENSORS seems to be working (went
through the whole 'sensors-detect' sequence) but it (also) only
finds that 'virtual temp' device which also always returns that 26800

value.

Post by Gerard Bucas

Post by Darren Hart

Post by Gerard Bucas
I am using latest 0.79 firmware (will add to bug database).
Any ideas how else I can read core temps (yocto Linux build)?
Thanks
Gerard

Post by Darren Hart
The "core" temps appear to be correct, while the acpitz driver does
not appear to be providing updates. I will raise this with the driver teams.
Thank you for reporting.

Post by nb
Hi,
I always have same value (26.8°C), whatever the cpu does.
Regards
nb

Post by Gerard Bucas
écrit
Hi nb
Thanks but I see that your temp ALSO returns 26.8C (same as mine!!).
That is the 'problem', no matter what the chip temp is (could be
too hot to even touch under heavy load) - the temp returned is
ALWAYS 26.8C!!!
Have a look and let me know if that is also what you observe
(seems like it from what you wrote as it is too much of a
co-incidence that you get EXACTLY the same value as I do - hot or
cold!!)
Thanks
Gerard

Post by nb
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it¹s the same (sensors is in lm-sensors package)
Regards
nb

Post by Gerard Bucas
écrit
Hi Everyone,
We use linux (custom built with yocto project) on minnowBoard MAX.
Works great!
However, I have a problem reading the CPU core temperature of the E3825.
cat /sys/class/thermal/thermal_zone0/temp
It ALWAYS returns the value: 26800 (= 26.8C)
Linux kernel version: 3.19.2-yocto-standard
BB_VERSION = "1.27.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "intel-corei7-64" (recommended by Intel for Atom
E38XX SoC & minnowBoard MAX)
DISTRO = "poky"
DISTRO_VERSION = "1.8+snapshot-20150429"
It looks like this value is hard-coded in the kernel! In
researching this on the internet it seems that many people have
this problem with a variety of Intel based CPU's/SoC's on a
variety of different linux distributions.
Has anyone else solved this problem or do you know of another
linux command line that would give me the CPU (chip) temperature?
I have tried to add the "lm-sensors" package but have had
problems adding it to my yocto build as I can't seem to find
the right "package group" that includes lm-sensors.
Any ideas/help would be MUCH appreciated!
Thanks
Gerard
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center

--
Darren Hart
Intel Open Source Technology Center
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

Darren Hart

2015-04-30 15:11:44 UTC

Permalink

Gerard,

Which firmware version are you running? You can find this in the firmware
menu itself, or you can search for it in the results of dmidecode...
Something like "dmidecode | grep -C2 BIOS".

Thanks,

Post by nb
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it¹s the same (sensors is in lm-sensors package)
Regards
nb

Post by Gerard Bucas
Hi Everyone,
We use linux (custom built with yocto project) on minnowBoard MAX. Works great!
However, I have a problem reading the CPU core temperature of the E3825.
cat /sys/class/thermal/thermal_zone0/temp
It ALWAYS returns the value: 26800 (= 26.8C)
Linux kernel version: 3.19.2-yocto-standard
BB_VERSION = "1.27.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "intel-corei7-64" (recommended by Intel for Atom
E38XX SoC & minnowBoard MAX)
DISTRO = "poky"
DISTRO_VERSION = "1.8+snapshot-20150429"
It looks like this value is hard-coded in the kernel! In researching
this on the internet it seems that many people have this problem with a
variety of Intel based CPU's/SoC's on a variety of different linux
distributions.
Has anyone else solved this problem or do you know of another linux
command line that would give me the CPU (chip) temperature?
I have tried to add the "lm-sensors" package but have had problems
adding it to my yocto build as I can't seem to find the right "package
group" that includes lm-sensors.
Any ideas/help would be MUCH appreciated!
Thanks
Gerard
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Darren Hart
Intel Open Source Technology Center

2015-04-30 16:13:11 UTC

Permalink

Post by nb
Gerard,
Which firmware version are you running? You can find this in the firmware
menu itself, or you can search for it in the results of dmidecode...
Something like "dmidecode | grep -C2 BIOS ».

Version: MNW2CRB1.X64.0071.R30.1408131301

Post by nb
Thanks,

Post by nb
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it¹s the same (sensors is in lm-sensors package)
Regards
nb

Post by Gerard Bucas
Hi Everyone,
We use linux (custom built with yocto project) on minnowBoard MAX. Works great!
However, I have a problem reading the CPU core temperature of the E3825.
cat /sys/class/thermal/thermal_zone0/temp
It ALWAYS returns the value: 26800 (= 26.8C)
Linux kernel version: 3.19.2-yocto-standard
BB_VERSION = "1.27.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "intel-corei7-64" (recommended by Intel for Atom
E38XX SoC & minnowBoard MAX)
DISTRO = "poky"
DISTRO_VERSION = "1.8+snapshot-20150429"
It looks like this value is hard-coded in the kernel! In researching
this on the internet it seems that many people have this problem with a
variety of Intel based CPU's/SoC's on a variety of different linux
distributions.
Has anyone else solved this problem or do you know of another linux
command line that would give me the CPU (chip) temperature?
I have tried to add the "lm-sensors" package but have had problems
adding it to my yocto build as I can't seem to find the right "package
group" that includes lm-sensors.
Any ideas/help would be MUCH appreciated!
Thanks
Gerard
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

Darren Hart

2015-04-30 15:17:49 UTC

Permalink

Gerard - specifically, could you report your firmware version to the
bugzilla entry I opened for this:

https://bugzilla.yoctoproject.org/show_bug.cgi?id=7682

Thanks,

Darren

Post by nb
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it¹s the same (sensors is in lm-sensors package)
Regards
nb

Post by Gerard Bucas
Hi Everyone,
We use linux (custom built with yocto project) on minnowBoard MAX. Works great!
However, I have a problem reading the CPU core temperature of the E3825.
cat /sys/class/thermal/thermal_zone0/temp
It ALWAYS returns the value: 26800 (= 26.8C)
Linux kernel version: 3.19.2-yocto-standard
BB_VERSION = "1.27.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "intel-corei7-64" (recommended by Intel for Atom
E38XX SoC & minnowBoard MAX)
DISTRO = "poky"
DISTRO_VERSION = "1.8+snapshot-20150429"
It looks like this value is hard-coded in the kernel! In researching
this on the internet it seems that many people have this problem with a
variety of Intel based CPU's/SoC's on a variety of different linux
distributions.
Has anyone else solved this problem or do you know of another linux
command line that would give me the CPU (chip) temperature?
I have tried to add the "lm-sensors" package but have had problems
adding it to my yocto build as I can't seem to find the right "package
group" that includes lm-sensors.
Any ideas/help would be MUCH appreciated!
Thanks
Gerard
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center

Gerard Bucas

2015-04-30 16:52:54 UTC

Permalink

OK Darren (just installed dmidecode in my build - seems useful - didn't know
that cmd!) - will update bugzilla entry.

I am using latest firmware:
MNW2MAX1.X64.0079.R01.1504081555

Regards

Gerard

-----Original Message-----
From: Darren Hart [mailto:***@linux.intel.com]
Sent: Thursday, April 30, 2015 11:18 AM
To: MinnowBoard Development and Community Discussion; ***@tekmagic.net
Subject: Re: [MinnowBoard] Problem reading CPU temp in linux (yocto build)

Gerard - specifically, could you report your firmware version to the
bugzilla entry I opened for this:

https://bugzilla.yoctoproject.org/show_bug.cgi?id=7682

Thanks,

Darren

Post by nb
Hi Gerard,
sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +26.8°C (crit = +90.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +50.0°C (high = +110.0°C, crit = +110.0°C)
Core 2: +51.0°C (high = +110.0°C, crit = +110.0°C)
So it¹s the same (sensors is in lm-sensors package)
Regards
nb

Post by Gerard Bucas
Hi Everyone,
We use linux (custom built with yocto project) on minnowBoard MAX. Works great!
However, I have a problem reading the CPU core temperature of the E3825.
cat /sys/class/thermal/thermal_zone0/temp
It ALWAYS returns the value: 26800 (= 26.8C)
Linux kernel version: 3.19.2-yocto-standard
BB_VERSION = "1.27.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "intel-corei7-64" (recommended by Intel for Atom
E38XX SoC & minnowBoard MAX)
DISTRO = "poky"
DISTRO_VERSION = "1.8+snapshot-20150429"
It looks like this value is hard-coded in the kernel! In researching
this on the internet it seems that many people have this problem with
a variety of Intel based CPU's/SoC's on a variety of different linux
distributions.
Has anyone else solved this problem or do you know of another linux
command line that would give me the CPU (chip) temperature?
I have tried to add the "lm-sensors" package but have had problems
adding it to my yocto build as I can't seem to find the right "package
group" that includes lm-sensors.
Any ideas/help would be MUCH appreciated!
Thanks
Gerard
_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

_______________________________________________
elinux-MinnowBoard mailing list
http://lists.elinux.org/mailman/listinfo/elinux-minnowboard

--
Darren Hart
Intel Open Source Technology Center