Location custom startup/resume script

Question

I tried to figure it out using the search function but i couldnt get the answer i was looking for. After following the wiki and installing everything i needed to control my fan speed and so on, my fan keeps spinning very fast. I read many threads and the only thing that seemed to be working was forcing my fans with the code below. Now i used the search alot but i couldnt figure out how to add the code so it will run at boot and after resume from suspending. Is there anyone who can tell me how i can fix this?
# echo 0 > /sys/class/thermal/cooling_device3/cur_state
# echo 0 > /sys/class/thermal/cooling_device4/cur_state
# echo 0 > /sys/class/thermal/cooling_device5/cur_state
# echo 0 > /sys/class/thermal/cooling_device6/cur_state
/Edit: Typo.
Last edited by Greenify (2015-01-31 20:23:12)

Answer 1

snakeroot wrote:
Greenify wrote:Eventually i want this to run on boot also, but im still searching how i must get it to work.
The detail you need is in man 5 tmpfiles.d
Try creating a file named fan.conf in /etc/tmpfiles.d
Then edit it to add the following line:
w /sys/class/thermal/cooling_device*/cur_state - - - - "0"
This assumes you are trying to write to every single cooling_devicex file. If not, you'll need to modify the blob in the path.
Obviously, I'm not passing on the wisdom of shutting off any or all of your fans. It's your system: you break it you keep all the pieces.
I followed your advice and read the man pages of the tmpfiles.d and it seems that is exactly what im looking for. I have just tested it out and it works like a charm, thank you. As for forcing the fans to a state, the reason i do this is because no other method seems to work. CPU temperature wont pass 43 degrees when i use this laptop for normal tasks. When they are forced that is.
nstgc wrote:I have to do something like this for bcache at boot. I use tmpfiles.d and it works great.
I agree, it works like a charm!
/Edit:
Greenify wrote:
whoops wrote:Not sure if it's the right place though - I think you might not be supposed to change (/add) anything directly in /usr/lib/systemd and instead maybe copy it to /etc/systemd (?)... but I'm not sure if that applies to scripts like that, or might be confusing it with stuff in /usr/share -.-
You got a good point there, ill look it up this week and post my findings here.
This is what it says in the wiki:
Hooks in /usr/lib/systemd/system-sleep
An example of a custom sleep script:
/usr/lib/systemd/system-sleep/example.sh
#!/bin/sh
case $1/$2 in
pre/*)
echo "Going to $2..."
post/*)
echo "Waking up from $2..."
esac
Last edited by Greenify (2015-02-02 22:29:04)