RVP <[email protected]> writes:
> On Fri, 10 Oct 2025, Van Ly wrote:
>
>> Rebuilding btop with the patch takes the temperature reading down to
>> 56degC from 89degC on 11 beta.
>>
>
> Run `envstat'. You should still see both values. On some machines `acpitz0'
> doesn't change--doesn't on mine.
>
The fan speed at the bottom of envstat output had me lookup how to set
it but I don't think hw.dbcool0.fan_ctl_0 is available on my ThinkPad.
Setting the cpu frequency to lower values by
sysctl -w machdep.cpu.frequency.target=400
and running estd in in rc.conf
estd=YES
estd_flags="-d -l 40 -h 70 -b -M 2700"
lowers the temperature to 45degC in `envstat'
[acpitz0]
temperature: 50.000 127.000 degC
[coretemp0]
cpu0 temperature: 47.000 degC
[coretemp1]
cpu1 temperature: 45.000 degC
[thinkpad0]
temperature 0: 50.000 degC
but the btop reading says 57degC.
>> The laptop body's keyboard feels warmer than it should be, particularly
>> at the top right quadrant where the Delete and Backspace keys are.
>>
>
> That's probably where the CPU is.
>
>> On 10.1, the temperature was 41degC and it felt the fan cooling was more
>> actively anticipating.
>>
>
> I haven't noticed much of a difference. Even in -HEAD my temps are ~40 C
> for both cores of my CPU.
>
> Might I suggest blowing the dust off the fan, and repasting the heat sink?
>
Yes. The air vents at the bottom of the laptop look clogged.
Repasting the heat sink is beyond my competence.
Thanks for the help.
--
vl
