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[arch-general] Kernel 4.2.5-1-ARCH max CPU temperature

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Dennis Lange

31 Oct 2015 31 Oct '15

3:37 p.m.

Hi everybody, I am using an i7-2600K and since Kernel: 4.2.5-1-ARCH my CPU temperature goes up to 98°C. Before 4.2.5-1 lm_sensors max temperature was around 64°C. First I examine my CPU fan, but it works like before. Any idea why this is happening?

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Ralf Mardorf

31 Oct 31 Oct

6:55 p.m.

On Sat, 31 Oct 2015 16:37:17 +0100, Dennis Lange wrote:

I am using an i7-2600K and since Kernel: 4.2.5-1-ARCH my CPU temperature goes up to 98°C. Before 4.2.5-1 lm_sensors max temperature was around 64°C.

First I examine my CPU fan, but it works like before.

Any idea why this is happening?

Hi Dennis, are you sure that it's related to the kernel and not to something else that was updated? Did you run $ top and $ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor to ensure that everything is as expected? If I would run upowerd on my machine, it would use 100% CPU resources, when an iPad is connected to an USB port. Regards, Ralf

Dennis Lange

11:29 p.m.

Hi Ralf, I am not really sure if this problem is directly related to the kernel, but after 2 years of constantly updating my Archlinux it is the first time that the CPU temperature get up to 98°C if I compile stuff or render some 3D scenes and I am sure that this does not happen with the previous kernel version. cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor say powersave I will try to install the previous kernel. Best regards, Dennis

Hi Dennis,

are you sure that it's related to the kernel and not to something else that was updated?

Did you run

$ top

and

$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

to ensure that everything is as expected?

If I would run upowerd on my machine, it would use 100% CPU resources, when an iPad is connected to an USB port.

Regards, Ralf

Dennis Lange

1 Nov 1 Nov

11:41 a.m.

I downgraded the Kernel Version to 4.2.4-1-ARCH and the temperature still goes up to 98°C. I try to investigate more to get an idea of why this is happening.

Hi Ralf,

I am not really sure if this problem is directly related to the kernel, but after 2 years of constantly updating my Archlinux it is the first time that the CPU temperature get up to 98°C if I compile stuff or render some 3D scenes and I am sure that this does not happen with the previous kernel version.

cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

say powersave

I will try to install the previous kernel.

Best regards, Dennis

...
Hi Dennis,

are you sure that it's related to the kernel and not to something else that was updated?

Did you run

$ top

and

$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

to ensure that everything is as expected?

If I would run upowerd on my machine, it would use 100% CPU resources, when an iPad is connected to an USB port.

Regards, Ralf

Joakim Hernberg

12:18 p.m.

On Sun, 1 Nov 2015 12:41:01 +0100 Dennis Lange wrote:

I downgraded the Kernel Version to 4.2.4-1-ARCH and the temperature still goes up to 98°C. I try to investigate more to get an idea of why this is happening.

You could use the i7z utility to see what the cpu is up to. Also investigate what is burning cpu, surely some thread is acting up? -- Joakim

Øyvind Heggstad

12:44 p.m.

On Sun, 1 Nov 2015 12:41:01 +0100 Dennis Lange wrote:

I downgraded the Kernel Version to 4.2.4-1-ARCH and the temperature still goes up to 98°C. I try to investigate more to get an idea of why this is happening.

Remove cooler, clean and apply new paste, remount the cooler?

Pablo

1:25 p.m.

Maybe you could try the LTS kernel El 1 de noviembre de 2015 13:44:12 CET, "Øyvind Heggstad" escribió:

On Sun, 1 Nov 2015 12:41:01 +0100 Dennis Lange wrote:

...
I downgraded the Kernel Version to 4.2.4-1-ARCH and the temperature still goes up to 98°C. I try to investigate more to get an idea of why this is happening.

Remove cooler, clean and apply new paste, remount the cooler?

Dennis Lange

1:47 p.m.

Yep, applying new paste is my next try. My Debian Jessie installation also goes up to 98°C and my Bios does the same. I also got an Over Temperature Error after checking the Bios settings. This looks like an hardware issue. Sorry for blaming the kernel and thanks for taking care. Best Regards, Dennis Am 01.11.2015 um 13:44 schrieb Øyvind Heggstad:

On Sun, 1 Nov 2015 12:41:01 +0100 Dennis Lange wrote:

...
I downgraded the Kernel Version to 4.2.4-1-ARCH and the temperature still goes up to 98°C. I try to investigate more to get an idea of why this is happening.

Remove cooler, clean and apply new paste, remount the cooler?

Dennis Lange

2 Nov 2 Nov

7:18 p.m.

I found the problem while replacing the thermal grease. The plastic holder of the cpu cooler was broken. Never thought that the fan was creating such a high amount of vibration. I bought a new cooler and now the temperature is back to normal. Am 01.11.2015 um 13:44 schrieb Øyvind Heggstad:

On Sun, 1 Nov 2015 12:41:01 +0100 Dennis Lange wrote:

...
I downgraded the Kernel Version to 4.2.4-1-ARCH and the temperature still goes up to 98°C. I try to investigate more to get an idea of why this is happening.

Remove cooler, clean and apply new paste, remount the cooler?

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participants (5)

Dennis Lange
Joakim Hernberg
Pablo
Ralf Mardorf
Øyvind Heggstad