Fan (fancontrol) issue: Dell Inspiron 3521

Hello everyone, please bear with me as I am a novice arch user. Also I am not  native english speaker (just in case )
I have a problem with the laptop fan working constantly, which is annoying and disturbing. It has to be due to a system configuration, because I am coming form the other distro, where problem didn't exist. Also just after arch installation the fan was working fine (meaning in intervals, not constantly). It's just broken recently. The temp. is fine, around 50 degrees with medium load (browser, mplayer).
[mateusz@mateusz ~]$ sensors
coretemp-isa-0000
Adapter: ISA adapter
Physical id 0: +52.0°C (high = +87.0°C, crit = +105.0°C)
Core 0: +52.0°C (high = +87.0°C, crit = +105.0°C)
Core 1: +50.0°C (high = +87.0°C, crit = +105.0°C)
So obviously I made my research, and came to that conclusion:
-Due to the nature of systemd, the config for fancontrol stopped being loaded properly
[mateusz@mateusz ~]$ systemctl status lm_sensors
● lm_sensors.service - Initialize hardware monitoring sensors
Loaded: loaded (/usr/lib/systemd/system/lm_sensors.service; disabled)
Active: inactive (dead)
[mateusz@mateusz ~]$ systemctl status fancontrol
● fancontrol.service - Start fan control, if configured
Loaded: loaded (/usr/lib/systemd/system/fancontrol.service; disabled)
Active: inactive (dead)
sie 08 08:54:01 mateusz systemd[1]: Started Start fan control, if configured.
I suspect it's the same thing explained in this post: https://bbs.archlinux.org/viewtopic.php … 6#p1251766 ,
"assignments of various hwmon symlinks change on each reboot". The advice is to load modules manually. But I got only one module:
[mateusz@mateusz ~]$ ls /sys/class/hwmon/ -al
razem 0
drwxr-xr-x 2 root root 0 08-08 09:12 .
drwxr-xr-x 45 root root 0 08-08 09:45 ..
lrwxrwxrwx 1 root root 0 08-08 09:12 hwmon0 -> ../../devices/platform/coretemp.0/hwmon/hwmon0
This is the place I got stuck. I have a general idea what to do, but I'd like to confirm and double check. I don't want to mess up my system, since I got to like it quite a bit.
My thinking is:
1. Set up lm_sensors
2. Remove it from autostart (or not configure it to autostart, but I'd rather remove it later, just to be on the safe side)
3. Load modules manually to /etc/modules-load.d/load_these.conf        However, I am worried that I see only coretemp. Just seems that something is wrong.
4. See if default  /etc/fancontrol is ok. If not try to configure it, as explained in wiki. https://wiki.archlinux.org/index.php/fan_speed_control
5. Do not run /usr/bin/fancontrol as I have Dell Ispiron ? Install instead i8kutils? See which is better/working at all?
6. Enable working solution from 5.
Thank you for reading this rather long one. I'd greatly appreciated any healp, hints, leads and so on.
Best regards
Last edited by ewaller (2014-08-10 17:01:16)

I am sorry to drag that issue, but It's a quite big problem for me. I realize that previous post are not proper, and I should've educated myself better. I read and googled a lot, but still can't figure what to do next. Please help.
Using i8k I set fancontrol, and It's working (done the manual modules loading to prevent systemd boot issue)
Now the rpm for my fan is ridiculous when the fan is on (I mean on software wise, because it's working constantly)
[mateusz@mateusz ~]$ sensors
i8k-virtual-0
Adapter: Virtual device
Right Fan: 90000 RPM
CPU: +49.0°C
coretemp-isa-0000
Adapter: ISA adapter
Physical id 0: +49.0°C (high = +87.0°C, crit = +105.0°C)
Core 0: +48.0°C (high = +87.0°C, crit = +105.0°C)
Core 1: +47.0°C (high = +87.0°C, crit = +105.0°C)
I set up minimal temp to 45 to prevent fan from working in the lower tempratures
[mateusz@mateusz ~]$ systemctl status fancontrol
● fancontrol.service - Start fan control, if configured
Loaded: loaded (/usr/lib/systemd/system/fancontrol.service; enabled)
Active: active (running) since sob 2014-08-09 08:26:49 CEST; 1h 50min ago
Main PID: 248 (fancontrol)
CGroup: /system.slice/fancontrol.service
├─ 248 /bin/bash /usr/sbin/fancontrol
└─4191 sleep 10
sie 09 08:26:56 mateusz fancontrol[248]: Depends on hwmon1/temp3_input
sie 09 08:26:56 mateusz fancontrol[248]: Controls hwmon0/fan2_input
sie 09 08:26:56 mateusz fancontrol[248]: MINTEMP=45
sie 09 08:26:56 mateusz fancontrol[248]: MAXTEMP=85
sie 09 08:26:56 mateusz fancontrol[248]: MINSTART=150
sie 09 08:26:56 mateusz fancontrol[248]: MINSTOP=100
sie 09 08:26:56 mateusz fancontrol[248]: MINPWM=0
sie 09 08:26:56 mateusz fancontrol[248]: MAXPWM=255
sie 09 08:26:56 mateusz fancontrol[248]: Enabling PWM on fans...
sie 09 08:26:56 mateusz fancontrol[248]: Starting automatic fan control...
And the sensors gives expected output:
[mateusz@mateusz ~]$ sensors
i8k-virtual-0
Adapter: Virtual device
Right Fan: 0 RPM
CPU: +45.0°C
coretemp-isa-0000
Adapter: ISA adapter
Physical id 0: +46.0°C (high = +87.0°C, crit = +105.0°C)
Core 0: +46.0°C (high = +87.0°C, crit = +105.0°C)
Core 1: +44.0°C (high = +87.0°C, crit = +105.0°C)
But despite the 0 RPM reading the fan is noising all the way. I read more about i8kutils, installed it and tested. I got weird output:
[mateusz@mateusz ~]$ i8kctl
1.0 A12 7YDQ0X1 47 -1 0 -1 0 -1 -1
[mateusz@mateusz ~]$ i8kctl fan
-1 0
-1 entry is not even in the man page. What does it mean? It's the left one, the usual cpu one. And the other one is switched off, which is consistent with sesnors output (while sensors give RPM speed i8kctl gives 1 for the right fan) . But like I said, it's fanning all the time, constantly. The other thing is that this laptop, to my limited knowledge has got one fan.
Please help, I am lost here.
Best regards
Last edited by matman (2014-08-09 08:32:53)

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    Esther Fan | Visual Studio | If a post answers your question, please mark it as the answer. Thanks!

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