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Re: switch off cpu fan on lenovo g50-30

From: znavko
Subject: Re: switch off cpu fan on lenovo g50-30
Date: Thu, 04 Jul 2019 11:13:08 +0000

I see this now:

# pwmconfig
# pwmconfig revision $Revision$ ($Date$)
This program will search your sensors for pulse width modulation (pwm)
controls, and test each one to see if it controls a fan on
your motherboard. Note that many motherboards do not have pwm
circuitry installed, even if your sensor chip supports pwm.

We will attempt to briefly stop each fan using the pwm controls.
The program will attempt to restore each fan to full speed
after testing. However, it is ** very important ** that you
physically verify that the fans have been to full speed
after the program has completed.

/root/.guix-profile/sbin/pwmconfig: There are no pwm-capable sensor modules 

# fancontrol
Loading configuration from /etc/fancontrol ...
Error: Can't read configuration file

July 4, 2019 7:29 AM, "Efraim Flashner" <address@hidden> wrote:

> On Thu, Jul 04, 2019 at 06:42:40AM +0000, address@hidden wrote:
>> Hello! Sometimes I need my laptop Lenovo G50-30 is silent, need to switch 
>> off CPU fan.
>> Basically this laptop had no cpu fan but only passive cooling system. I had 
>> inserted cpu fan by my
>> hands and there were fan power joint on the motherboard. This is nice. I 
>> hope Guix Linux-Libre has
>> necessary fan control driver for my laptop.
>> There is package 'thinkfan' in Guix repository. Would you advice me how to 
>> config it and is it
>> possible to switch off fan?
>> # thinkfan
>> ERROR: /etc/thinkfan.conf: No such file or directory
> efraim@macbook41 ~/workspace/guix$
> /./gnu/store/c8pmmbpx3q881baivkrcmi01lrj4si4j-thinkfan-1.0.2/sbin/thinkfan 
> --help
> ERROR: Invalid command line: Unknown option: --
> Usage: thinkfan [-hnqzD [-b BIAS] [-c CONFIG] [-s SECONDS] [-p [SECONDS]]]
> -h This help message
> -s Maximum cycle time in seconds (Integer. Default: 5)
> -b Floating point number (-10 to 30) to control rising temperature
> exaggeration (see README). Default: 5.0
> -c Load different configuration file (default: /etc/thinkfan.conf)
> -q Be more quiet. Can be specified up to three times so that only errors
> are logged.
> -v Enable verbose logging (e.g. log temperatures continuously).
> -p Use the pulsing-fan workaround (for worn out fans). Takes an optional
> floating-point argument (0 ~ 10s) as depulsing duration. Default 0.5s.
> -d Don't read S.M.A.R.T. temperature from sleeping disks
> -D DANGEROUS mode: Disable all sanity checks. May result in undefined
> behaviour!
> Unless you want to write a system service for it, I'd figure out where
> there's a thinkfan.conf file (we don't seem to have it installed with
> the package) and run 'sudo -E thinkfan -c /path/to/thinkfan.conf'
> --
> Efraim Flashner <address@hidden> אפרים פלשנר
> GPG key = A28B F40C 3E55 1372 662D 14F7 41AA E7DC CA3D 8351
> Confidentiality cannot be guaranteed on emails sent or received unencrypted

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