High fan speed after suspend

Question

It seems this is a common problem, but I still cannot find a good solution. After a cold boot, my laptop runs perfectly, but after resuming from suspend, the fan kicks in to 100% and blows out cold air, indicating that the fan isn't responding to the temperature of the laptop components. As proof, here's the output from sensors:

acpitz-virtual-0
Adapter: Virtual device
temp1:        +41.0°C  (crit = +101.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +43.0°C  (high = +87.0°C, crit = +105.0°C)
Core 0:         +43.0°C  (high = +87.0°C, crit = +105.0°C)
Core 1:         +39.0°C  (high = +87.0°C, crit = +105.0°C)

My laptop model is Sony SVE14A290X. I have tried adding a couple different 99fancontrol.d scripts, but none worked so far. pwmconfig also doesn't report a pwm-capable module in my laptop. Please help!

David Foerster · Answer 1 · 2015-11-27T08:41:39.000

4

Unfortunately fancontrol doesn't restore the fan state after suspension. You can write a pm-action(8) resume hook that restarts the fancontrol service:

Create a file /etc/pm/sleep.d/10_fancontrol (e. g. with gksudo gedit):

#!/bin/sh
case "$1" in
resume)
    exec service fancontrol restart;;
esac

Mark it executable:

sudo chmod +x /etc/pm/sleep.d/10_fancontrol

edited Nov 27 '15 at 08:41

answered Oct 03 '14 at 18:14

David Foerster

36,264
56
94
147

Related: http://askubuntu.com/questions/58404/how-to-start-and-stop-a-service – Elder Geek Apr 01 '15 at 01:09
As you're a reputation 1 user: if this answers your question, don't forget to click the grey ☑ under the "0" at the left of this text to accept it, which means "yes, this answer is valid"! – David Foerster Apr 04 '15 at 23:30
1

fancontrol is not even installed by default (at least in Xubuntu 15.10). – jarno Nov 26 '15 at 13:56

score 0 · Answer 2 · edited Apr 14 '16 at 21:39

0

On more recent Ubuntu using systemd, you need a similar script but in /lib/systemd/system-sleep:

#!/bin/bash
case "$1" in
post)
  exec service fancontrol restart;;
esac

edited Apr 14 '16 at 21:39

muru

197,895
55
485
740

answered Apr 13 '16 at 12:51

Tony den Haan

1

I don't think it worked. – DanMan Sep 05 '16 at 23:07
Worked for me. May need to mark it executable – fisk Jul 02 '17 at 08:59
This was from another question, but it seems like there was some sort of bug that got fixed in kernel 4.12. If you follow this guide to manually installed the latest kernel (via .debs) this will fix the problem.
https://www.tecmint.com/upgrade-kernel-in-ubuntu/
– Benjamin Sep 04 '17 at 16:21

score 0 · Answer 3 · answered Jul 28 '17 at 14:20

I followed the suggestion for systemd and it worked briefly. It appears to me that it may work only on the first suspend/resume cycle after a cold boot.

I tried restarting the fancontrol service manually but it was 'masked' and permission denied. I tried unmasking it but that did not solve the problem.

Folks have speculated that this issue is a kernel regression. Upon searching it is seen cropping up over the past ten years. Laptops mentioned include Dell, HP, and Lenovo.

I am having the issue on a new Lenovo X1-Carbon, 5th generation, running Ubuntu 16.04.2 LTS Gnome, all updates current, kernel 4.10.0-28-generic.

High fan speed after suspend

3 Answers3