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