Re: [lm-sensors] Asus H87-PRO /usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed

[Mathias Gerber <mathias_g@tuxedo.ath.cx>]

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Hi Günther, Hi Michael

On 22.01.2014 17:25, Guenter Roeck wrote:
> you were faster than me ;-). Michael, let me know if you have any
> problems with the driver.
I'm just through all this during the last few days ;-)

> Interesting that pwmconfig doesn't recognize this. CPU fans usually
> never stop completely, and afaik the script should recognize the
> speed change.
The output in this step of pwmconfig is:
> Testing pwm control hwmon1/device/pwm2 ... hwmon1/device/fan2_input
> ... speed was 2292 now 2292 no correlation hwmon1/device/fan4_input
> ... speed was 1739 now 1739 no correlation
> 
> No correlations were detected. There is either no fan connected to
> the output of hwmon1/device/pwm2, or the connected fan has no
> rpm-signal connected to one of the tested fan sensors. (Note: not
> all motherboards have the pwm outputs connected to the fan
> connectors, check out the hardware database on
> http://www.almico.com/forumindex.php)
> 
> Did you see/hear a fan stopping during the above test (n)? ^C

During this few seconds test, /sys/class/hwmon/hwmon1/device/pwm2 is
set to 0. But if you set this pwm2 to 0, the CPU fan runs with full
speed (same rpm as with pwm2=255)
The other pwm output with a fan connected (pwm4) does not behave like
this and stops the fan with pwm0.

> Anyway, I would recommend to use the chip's automatic fan control
> if possible. It doesn't rely on a script running in the OS to
> control fan speeds, and usually works pretty well (and can be
> reconfigured if you dislike the BIOS settings).
Normally, yes. But it was not possible to go that low with the fan
speed within the BIOS settings (20% or 25% is the minimum IIRC)
But with my current setup (i3-4130T, 35W TDP) the CPU temperature is
the last problem. I can go down till pwm 7, the fan (A.C. Freezer 13)
still runs silent and stable at ~550rpm.

@Michael: Could you give me some feedback to my mainboard config file?
Could you especially take a look at the +5V and +12V readings,
compared to the reading in the BIOS. Its possible that they are
inverted. But with my readings from the PSU I had idea how to verify
the assignment because the raw values were almost the same..
The scaling should be ok. Thanks alot!
- -- 
kind regards
 mathias
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