I've hacked up the ACPICPUThrottle.kext to support full-range CPU throttling on my AMD Turion X2 TK-55 and would love to hear any successes with others wanting AMD throttling. The only thing I can say for myself is that I don't have video support so when I drop to 800MHz it gets very jerky. So if you happen to have a real graphics card and want to give this a go please let me know how it works out for you

To install:

Download this: Click to view attachment
Move extracted folder to /Library/StartupItems/
Reboot
Fix Permissions
Reboot Again
Voila, you'll have it going.


If you'd rather test before setting it up as a startup item then just navigate into the folder thats extracted from the zip and run:

sudo chown -R root:wheel ACPICPUThrottle.kext
sudo chmod -R root:wheel ACPICPUThrottle.kext
sudo kextload -v ACPICPUThrottle.kext
sudo dmesg

dmesg is to check the output to see if everything went alright. If everything did, then run:

sudo ./CPUThrottleCtrl -v

to run the throttling daemon. Let me know how it goes!

Cheers!
ObsidianX

Works great for me! It throttles it fine, although I suffer from the same issue as you due to the unsupported graphics.

Sam

Hi,
Tried your CPU Throttler yesterday. Worked fine for me - I saw the messages changing the CPU's freq in a terminal. But then I have a tk-55 too - so it would work fine for me.
No GUI jerkyness - I have a nForce 6100 which has no drivers to enable QE/CI. But everything works in slow motion at lower freq - the maximising and minimising animations, the fisheye effect on the dock - everything seems slow. That is different from and Intel mac where the CPU freq reduces and the machine slows down - but the GUI doesn't get into slow motion.
Not sure if your Throtller has anything to do with it though. HAven't tried to see how much it improves battery perf. Will post results when I get to measure them.
BTW - I'm running 10.5.5 with modbin 9.4.0 kernel.
Good work.

That's great - it might be worthwhile to port the AMD support to IntelEnhancedSpeedStep.kext (link in my sig), since ACPICPUThrottler.kext is very old and buggy.

hey this fix repair the heat and cooler work to full speed?

Add to guide !!

I try this, and make it slow because no NVIDIA Graphics installed :/

WE NEED 7150m


Any place or people to make it the kext?

hi in my notebook sermpeon 2800 it did work

so does it mean my x2 3600 will be "C&Qable" without any gui slowdown?

say, if i have a supported graphic card.

Thank a lot.

Using leo4allv3 all problem still exist.

But after using leo4allv5 everything run perfectly.
amd 3800+ available state 1000,1800,2000
kernel voodoo_beta_2c

when autoclock used, running at 1000mhz no more sound problem,
and dock or app animation mini/maxi-mize goes fast, no slow motion again.

But when i down the clock to 1800 max from bios. it won't goest to 900,1600,1800 state just like at other OS.