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STICKY! THE Ultimate Self Cooling solution for MBP.(no accessory needed)

GOOD NEWS FOR ALL YOU MBP owners, finally we get a self cooling solution. No more heat, no more burns.

My MBP's regular temperature drops from 60+ Celcius to around 40C, and under 200% CPU Usage(with yes > /dev/null), it's still under 60C(before was about 80C).

Here we go:

http://www.mediamax.com/tom500/Hosted/smc-0.01.tar.bz2

This is a software controller for the SMC(System Management Control).
download this file, extract it, and execute the following command:
./smc -k F0Mn -w 2ee0
./smc -k F1Mn -w 2ee0

F0Mn means minimum fan speed for Fan 0, F1Mn for Fan 1. 2ee0 corresponds to 3000 in decimal. convert your target speed by(execute it in terminal):
python -c "print hex(3000 << 2)"

for example, to set to 6000(the maximum fan speed) for both fans:
# python -c "print hex(6000 << 2)"
0x5dc0
# sudo smc -k F0Mn -w 5dc0
# sudo smc -k F1Mn -w 5dc0


Enjoy !

P.S. put these commands at the end of your /etc/rc, so that it will be executed everytime on boot.

Macbook Pro

Posted on Oct 7, 2006 1:07 AM

Reply
446 replies

Oct 7, 2006 3:30 PM in response to Claudius

Thank you Thank you Thank you!!!!!!!!!!!!!!!

This really works well. Yes it needs a nice GUI with some features and controls but what a great start.

I live in Thailand where the ambient temp is 28 celcius + and normally idle abotu 60 to 64 celcius.

I set the fans to forced 4000 and my idle dropped to 47 celcius and if I max it with 2 shells running 'yes' it tops out about 73.

Will have to play around with the setings but wow this is great. The case is barely warm now and the fans are not loud at all.

if you want to run it at startup then create the file /etc/rc.local

and enter something like this. make the file executable also with a 'chmod 755 /etc/rc.local

#/bin/sh
#
#
/var/smc-0.01/smc -k "FS! " -w 0003
/var/smc-0.01/smc -k F1Tg -w 4e20
/var/smc-0.01/smc -k F0Tg -w 4e20

Oct 7, 2006 6:39 PM in response to Claudius

This is for wrager and foking

Okay, I think this is what they mean. Will others please add or correct this to make this friendly for new users please?

a. First, you got to make sure that there is a root account on your compute. If you have not set one up (it is not set for you by default), here is how you can enable it.

Look under Applications and then in a folder called Utilities.
There is an application there called Netinfo Manager
Open it and click on "Security" in the menu at the top
There is an option to authenticate
Use your current password to authenticate
Then click on enable root from the same security menu
You will be told that there is no password and to set up a password
Set up a password for root user


Now log out and you are ready for the next step

b. Log into your computer as root. The username will be "root" (no quotes) and the password will be the one you just set.

c. Download the application that OP talked about from the link in the first post

d. Extract that download and finally you will have a folder called "SMC 0.01" or something to that effect.

e. Rename that folder as "smc" (do not use quotes; The name "smc" is just a suggestion, you can do anything you want, but the rest of the procedure will assume you are calling it "smc")

f. I presume you keep your downloads on the desktop, so what you now have is an extracted folder on the desktop that you have now renamed "smc"

g. Launch an application called "Terminal" which you will find in the "Utilities" folder within "Applications" folder

h. Once you get the command prompt, type (or copy paste) the following and hit enter.

desktop/smc/smc -k F0Mn -w 2ee0

i. Repeat the same step (h) with the following and hit enter.

desktop/smc/smc -k F1Mn -w 2ee0

Close Terminal and you are done. Follow the instructions in the readme file in the download or the first post if you want another speed for your fans.

If you don't like the fan being on this way, simply shut and then start again (ideally, do not just restart from the menu. Shut it down and start all over again).

STICKY! THE Ultimate Self Cooling solution for MBP.(no accessory needed)

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