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