Fan control script

[Joushou]

I think you left out a $ in one of the last lines of the script, as well as an 's' at the end of defaults:

update-rc.d $initscript defaults $scriptrlevel || fatal "Failed to install rc-scripts"

When I ran the script as root, it told me that it failed to install the rc-scripts. I added the $ to scriptrlevel and it ran.

Yeah, i forgot, i never tested the install script... i just fixed it
I was toying around with the rc script too late at night, so i accidently wrote "rm -rf rc*.d smcfancontrol" instead of "rm -rf rc*.d/smcfancontrol"... i wrote the install script after i had reinstalled all the rc script, so i was a bit tired

Anyway, thanks for telling me

[sands]

Hi Joushou,

Sometimes the script dies after running for a long time for some reason.
Sometimes it happens after I wake up my computer from suspend.
I added it to my rc.local, and am not using it as a daemon. Is it because of that?

I am using it on Arch linux.

Does any of you know if this fan speed bug got solved in the latest versions of the kernel?

Thanks.

[Joushou]

What fan speed bug? The not-so-great fan-speed-control is not a bug

But back to my script:
Does it die after a certain amount of time, or is it random (Try to run it manually with "sudo time /usr/local/sbin/smcfancontrol", it will time how long it runs)?
Do the logs say anything? (It will print if it failed to read sensors or set fans to /var/log/smcfancontrol.log, and to stderr)
Running it as a daemon makes no difference, it's just a bash script afterall...

Anyway, if you could tell me if the logs give any info, it would help finding the problem alot
I'll look at the script again, and see if i left something stupid in it...

[sands]

26/04 00:16:34: Detecting configuration
26/04 00:16:34:   Fans: 1 
26/04 00:16:34:     Min fan-speed: 2000
26/04 00:16:34:     Max fan-speed: 6000
26/04 00:16:34:   Sensors: 10
26/04 00:16:34:     Limited by user to 4
26/04 00:16:34:   Laptop: true
26/04 00:16:34:     ACPI-State: online
26/04 00:16:34: Configuration detected
26/04 00:16:34: Temperature: 53, Fan-speed: 5404, ACPI-State: online
26/04 00:16:55: Temperature: 52, Fan-speed: 5256, ACPI-State: online
26/04 00:18:05: Temperature: 51, Fan-speed: 5108, ACPI-State: online
26/04 00:19:21: Temperature: 50, Fan-speed: 4960, ACPI-State: online
26/04 00:20:37: Temperature: 49, Fan-speed: 4812, ACPI-State: online
26/04 00:23:54: Temperature: 48, Fan-speed: 4664, ACPI-State: online
26/04 00:24:19: Temperature: 49, Fan-speed: 4812, ACPI-State: online
26/04 00:24:24: Temperature: 48, Fan-speed: 4664, ACPI-State: online
26/04 00:28:32: Temperature: 47, Fan-speed: 4516, ACPI-State: online
26/04 00:30:48: Temperature: 48, Fan-speed: 4664, ACPI-State: online
26/04 00:31:03: Temperature: 47, Fan-speed: 4516, ACPI-State: online
26/04 00:31:13: Temperature: 48, Fan-speed: 4664, ACPI-State: online
26/04 00:34:41: Temperature: 47, Fan-speed: 4516, ACPI-State: online
26/04 00:34:46: Temperature: 48, Fan-speed: 4664, ACPI-State: online
26/04 00:34:51: Temperature: 47, Fan-speed: 4516, ACPI-State: online
26/04 00:34:56: Temperature: 48, Fan-speed: 4664, ACPI-State: online
26/04 00:35:06: Temperature: 47, Fan-speed: 4516, ACPI-State: online
26/04 00:35:26: Temperature: 48, Fan-speed: 4664, ACPI-State: online
26/04 00:35:36: Temperature: 47, Fan-speed: 4516, ACPI-State: online
26/04 00:35:41: Temperature: 48, Fan-speed: 4664, ACPI-State: online
26/04 00:35:51: Temperature: 47, Fan-speed: 4516, ACPI-State: online
26/04 00:35:56: Temperature: 48, Fan-speed: 4664, ACPI-State: online
26/04 00:36:07: Temperature: 47, Fan-speed: 4516, ACPI-State: online
26/04 00:36:12: Temperature: 48, Fan-speed: 4664, ACPI-State: online
26/04 00:36:17: Temperature: 47, Fan-speed: 4516, ACPI-State: online
26/04 00:36:27: Temperature: 48, Fan-speed: 4664, ACPI-State: online
26/04 00:36:37: Temperature: 47, Fan-speed: 4516, ACPI-State: online
26/04 00:38:38: Temperature: 46, Fan-speed: 4368, ACPI-State: online
26/04 00:40:04: Temperature: 45, Fan-speed: 4220, ACPI-State: online
26/04 00:42:25: Temperature: 44, Fan-speed: 4072, ACPI-State: online
26/04 00:42:30: Temperature: 45, Fan-speed: 4220, ACPI-State: online
26/04 00:42:41: Temperature: 44, Fan-speed: 4072, ACPI-State: online
26/04 00:55:43: Temperature: 43, Fan-speed: 3924, ACPI-State: online
26/04 00:55:48: Temperature: 44, Fan-speed: 4072, ACPI-State: online
26/04 00:56:04: Temperature: 43, Fan-speed: 3924, ACPI-State: online
26/04 00:56:09: Temperature: 44, Fan-speed: 4072, ACPI-State: online
26/04 00:56:14: Temperature: 43, Fan-speed: 3924, ACPI-State: online
26/04 00:56:19: Temperature: 44, Fan-speed: 4072, ACPI-State: online
26/04 00:56:29: Temperature: 43, Fan-speed: 3924, ACPI-State: online
26/04 00:56:34: Temperature: 44, Fan-speed: 4072, ACPI-State: online
26/04 00:56:44: Temperature: 43, Fan-speed: 3924, ACPI-State: online
26/04 00:56:49: Temperature: 44, Fan-speed: 4072, ACPI-State: online
26/04 00:56:54: Temperature: 43, Fan-speed: 3924, ACPI-State: online
26/04 00:56:59: Temperature: 44, Fan-speed: 4072, ACPI-State: online
26/04 00:57:14: Temperature: 43, Fan-speed: 3924, ACPI-State: online
26/04 00:57:29: Temperature: 44, Fan-speed: 4072, ACPI-State: online
26/04 00:57:45: Temperature: 43, Fan-speed: 3924, ACPI-State: online
26/04 00:57:50: Temperature: 44, Fan-speed: 4072, ACPI-State: online
26/04 00:57:55: Temperature: 43, Fan-speed: 3924, ACPI-State: online
26/04 00:58:00: Temperature: 44, Fan-speed: 4072, ACPI-State: online
26/04 00:58:50: Temperature: 43, Fan-speed: 3924, ACPI-State: online
26/04 00:59:00: Temperature: 44, Fan-speed: 4072, ACPI-State: online
26/04 00:59:10: Temperature: 43, Fan-speed: 3924, ACPI-State: online
26/04 01:00:46: Temperature: 44, Fan-speed: 4072, ACPI-State: online
26/04 01:00:56: Temperature: 43, Fan-speed: 3924, ACPI-State: online
26/04 01:01:02: Temperature: 44, Fan-speed: 4072, ACPI-State: online
26/04 01:01:07: Temperature: 43, Fan-speed: 3924, ACPI-State: online
26/04 01:01:12: Temperature: 44, Fan-speed: 4072, ACPI-State: online
26/04 01:05:35: Temperature: 45, Fan-speed: 4220, ACPI-State: online
26/04 01:05:45: Temperature: 46, Fan-speed: 4368, ACPI-State: online
26/04 01:05:50: Temperature: 45, Fan-speed: 4220, ACPI-State: online
26/04 01:07:16: Temperature: 46, Fan-speed: 4368, ACPI-State: online
26/04 01:07:21: Temperature: 45, Fan-speed: 4220, ACPI-State: online
26/04 01:07:26: Temperature: 46, Fan-speed: 4368, ACPI-State: online
26/04 01:08:42: Temperature: 47, Fan-speed: 4516, ACPI-State: online
26/04 01:08:57: Temperature: 48, Fan-speed: 4664, ACPI-State: online
26/04 01:09:02: Temperature: 47, Fan-speed: 4516, ACPI-State: online
26/04 01:10:34: Temperature: 51, Fan-speed: 5108, ACPI-State: online
26/04 01:10:39: Temperature: 48, Fan-speed: 4664, ACPI-State: online
26/04 01:10:49: Temperature: 47, Fan-speed: 4516, ACPI-State: online
26/04 01:12:05: Temperature: 56, Fan-speed: 5848, ACPI-State: online
26/04 01:12:10: Temperature: 51, Fan-speed: 5108, ACPI-State: online
26/04 01:12:15: Temperature: 50, Fan-speed: 4960, ACPI-State: online
26/04 01:12:20: Temperature: 49, Fan-speed: 4812, ACPI-State: online
26/04 01:12:25: Temperature: 54, Fan-speed: 5552, ACPI-State: online
26/04 01:12:30: Temperature: 52, Fan-speed: 5256, ACPI-State: online
26/04 01:12:35: Temperature: 50, Fan-speed: 4960, ACPI-State: online
26/04 01:12:45: Temperature: 49, Fan-speed: 4812, ACPI-State: online
26/04 01:12:56: Temperature: 48, Fan-speed: 4664, ACPI-State: online
26/04 01:13:01: Temperature: 47, Fan-speed: 4516, ACPI-State: online
26/04 01:14:27: Temperature: 48, Fan-speed: 4664, ACPI-State: online
26/04 01:17:34: FATAL: Failing at: 
26/04 01:17:34: Attempting to set fans to safe values
26/04 01:17:34: Commit suicide. Bye.

This is the log. I am running it manually after it crashes..
What is this bug related to
https://bugs.launchpad.net/ubuntu/+s...ux/+bug/262550

[Joushou]

Okay, now i know why, sometimes it seems that you can't read the sensors (no idea why that happens though, seems random)
Quick fix is to just comment out the contents of the fatal-function.
I'm gonna rewrite the fatal-function to retry the commands 3-5 times, waiting something like 5 secs in between, but it actually requires me to do some thinking, and as you might have noticed, that's not something i'm used to

Oh, and you meant the serious heating was a bug? thought you meant the non-existing fan-control

[cyberdork33]

Oh, and you meant the serious heating was a bug? thought you meant the non-existing fan-control

I think the bug covers both aspects of this.

[sands]

Thanks, I will do that for now and will wait for your bashfu.

[slackerprimer]

Excellent catch hellmitre. Thanks for that!

[tiagobt]

The install script is still missing an "s" on line 40:

update-rc.d $initscript defaults $scriptrlevel || fatal "Failed to install rc-scripts"

Other than that, the script seems to work well on my MacBook 2,1.

I'm just curious, what difference does it make to change the number of sensors used? Why is the default 4?

Thanks,
Tiago

[cornelius2]

Thanks a lot Joushou for the great script and others for the corrections!
One more annoyance eliminated

Here is a patch to make the change to the fan speed gradual (you can make the change as slow as you want), to add support for coretemp sensors, and to fix the typo in install. The first sensors in the array are used for coretemp (CPU) sensors, so when you set sensorsUsed=2 on a dual core machine, you'll be using only CPU sensors. You can apply the patch by:

gunzip gradual-change-and-coretemp-support.patch.gz
cd smcfancontrol
patch -p1 <../gradual-change-and-coretemp-support.patch