Re: managing a fan speed via memory address

Is it not an ACPI driver? If not, you could write a quick fan driver!

Is there a thermal sensor(s) you could read to see how warm they get?



-adrian


On Tue, 2 May 2023 at 17:06, Dmitry N. Medvedev <dmitry.medvedev@gmail.com>
wrote:

> good morning,
>
> Recently I have learned about the dmidecode program and found the address
> of the FRNTFAN port in my HP Z420 machine: 0x0037.
> Since I am a complete newbie, I would like to learn if there is a way to
> read and change the value at this address.
> I need a bit of guidance.
>
> *The context*: I have added 8 SAS disks to the machine, put noctua fan in
> front of them and connected the fan to the FRNTFAN port on the motherboard.
> It looks like the fan works, but I am sure the disks would benefit if the
> fan produced more pressure. Which I fantasize I could do via changing the
> value at the said address.
> Not sure, of course.
>
> best regards,
> Dmitry N. Medvedev
>