Re: smart fans
Le dimanche 22 août 2021 à 21:59 +0200, Emanuel Berg a écrit :
> It took an even closer look at the motherboard and discovered
> _all_ connectors are 4-pin. Inside the computer, 3/5 fans are
> 4-pin and the two on the CPU cooling tower (which are 4-pin,
> so it checks out) even have "PWM" in their sticker text.
>
> If the BIOS/UEFI setting is already PWM, and the connectors
> are 4-pin, and some of the fans are, what's missing?
>
> And this makes it is even more difficult to understand why
> pwmconfig(8) asks for 3-pin fans. Because I have them -
> as well!
>
> fan front low be quiet! Shadow Wings 2 140 mm, 3-
> pin [1]
> front high be quiet! Shadow Wings 2 140 mm, 4-pin
> CPU cooling tower be quiet! Pure Wings 2 120 mm, 4-pin
> (2) [2]
> rear Corsair 120 mm, 3-pin
> projector extra fractal Silent Series R3 140 mm, 3-
> pin [3]
> (motherboard fan connectors are:
> CPU_FAN, CPU_OPT, SHA_FAN1, SHA_FAN2, SHA_FAN3 - all 4-pin)
[...]
I would think that pwmconfig complains that it finds 3-pins fans set up
to PWM mode (4-pins required)
Your UEFI propose either to setup your fans globally or individually
and I think that by default the setup is global. This would probably be
fine il all your fans were either 3-pins (DC mode) or 4-pins
(preferably PWM mode but DC mode is possibility). But you have both
installed. A solution could be, in your UEFI, to individually set up
all your 4-pins fans to PWM mode, while setting up all your 3-pins fans
to DC mode.
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