On 14-06-2020 14:14, Lars Noodén via Dng wrote:
> On 6/14/20 2:03 PM, dng@??? wrote:
>> On 14-06-2020 12:53, Lars Noodén via Dng wrote:
>>> On 6/14/20 1:47 PM, dng@??? wrote:
>>>> On 14-06-2020 12:38, Lars Noodén via Dng wrote:
>>>>> An upgrade to Beowulf went very smoothly but since upgrading I notice
>>>>> that the fans are always running. Although the air temperature is about
>>>>> 25°C the cores seem to run much hotter than necessary, pushing 70°C or
>>>>> hotter. The system is not really under any load. What should I be
>>>>> looking at to make corrections?
>>>>>
>>>>> -----
>>>>>
>>>>> $ grep -i pretty /etc/os-release ; uname -sr
>>>>> PRETTY_NAME="Devuan GNU/Linux 3 (beowulf)"
>>>>> Linux 4.19.0-9-amd64
>>>>>
>>>>>
>>>> You can try to add  intel_pstate=disable to your startup line.
>>> Thanks. It may already be disabled¹ though:
>>>
>>> # cat /sys/kernel/debug/tracing/events/power/pstate_sample/enable
>>> 0
>>>
>>> # cat /sys/kernel/debug/tracing/events/power/cpu_frequency/enable
>>> 0
>>>
>>> However, this is all an area I know nothing about.
>>>
>>> ¹ https://www.kernel.org/doc/html/v4.12/admin-guide/pm/intel_pstate.html
>>> _______________________________________________
>> It is not my daily job either but what i understand when intel_pstate is
>> disabled acpi-cpufreq takes it over. (And most likely did in ASCII.)
>>
>> Give it a try and if it works add it to grub.
>>
> Seems to have made a difference of over 20°C.
>
>
> /Lars

Which is still quiet high. I would advise to renew the thermal paste on
your processor. I can recommend Arctic Silver 5 AS5-3.5G Thermal Paste.
Made a difference of another 20°C on idle on my old i5.

Grtz.

Nick