Z68X Speedstep

[gpfeiffer]

My new Sandy Bridge build based on GA-Z68X-UD3-B3 (BIOS F2)/i7-2600 has been running quite well: (sleep, ALC889 audio, network using Realtek driver)[only small problem with USB keyboard freeze after wakeup].

Speedstep is not working (checked with MSRDumper).
Any ideas what could be wrong/what to look at?

Thanks

My confirguration:
- DSDT from db (thanks, Tony!)
- iMac11,1 in smbios.plist (tried iMac12,2: same result)
- 10.6.7 base installation with the following files/kexts were extracted from the 10.6.7 iMac early 2011 update:

• - 10.7.4 Kernel

• - AppleIntelCPUPowerManagement.kext (142.6.0)

• - AppleIntelCPUPowerManagementClient.kext (142.6.0)

• - AppleAHCIPort.kext (2.1.7)

In Extra:Extra.tiff
- Geekbench: around 11,200

 

[gpfeiffer]

Success - I follwed TooSixy's guide (Steps to Implement Speedsteep.pdf). Works perfectly now - Geekbench score went up by about 500.

Thanks for the help, TooSixy!

 

[geticus]

@gpfeiffer

I'm trying to get speedstep working on my MSI motherboard either and I realy like to get it.
How did you use SpeedStepper on your motherboard assuming it's only for Asus mobos ?

@TooSixy
I've followed your guide and I can get now AppleIntelCPUPowerManagement.kext to load but the CPU is stuck to 1.6 and geekbench is drop down to 4200 (half than before)

Any idea ?

Thank you

 

[geticus]

Thank you for your answer.

Right, I have no more need for NullCPUPowerManagement in Extra/Extensions

I'll try without Speedstepping mod to see what's happenng.

cheers

 

[geticus]

@TooSixy

I get KP with AppleIntelCPUPowerManagement.kext not modded.

 

[geticus]

Well, I understand this very well.

But with AppleIntelCPUPowerManagement.kext patched with SpeedStepper in Terminal AppleIntelCPUPowerManagement will load. Even if my I5 2400 is stuck at 1.6, for me is a step forward.

I want keep trying to get speedstep working.

 

[gpfeiffer]

@gpfeiffer

I'm trying to get speedstep working on my MSI motherboard either and I realy like to get it.
How did you use SpeedStepper on your motherboard assuming it's only for Asus mobos ?

I followed the instructions from the 'Implement Speedstep' guide step by step: run speedstepper from working folder on actual AICPM kext - that's all (then install patched kexts as per guide)

Good luck!

 

[gpfeiffer]

You're missing the IOPlatformPluginFamily.kext and AppleLPC.kext files.
Check and make sure your iMac11,1 or iMac12,2 is in the IOPlatformPluginFamily.kext file.

I would clean the caches.
After I had installed the patched kexts etc to get Speedstep working, my system was initially very slow.
I then run 'Onyx' to clean up and, voila, everything was running fine.

 

[geticus]

You're missing the IOPlatformPluginFamily.kext and AppleLPC.kext files.
Check and make sure your iMac11,1 or iMac12,2 is in the IOPlatformPluginFamily.kext file.

I would clean the caches.
After I had installed the patched kexts etc to get Speedstep working, my system was initially very slow.
I then run 'Onyx' to clean up and, voila, everything was running fine.

Thank you man, it doesn't work for me.

 

[gpfeiffer]

Installed Lion and it looks like Speedstep is working out of the box (without using speed_ stepper to modify AICPM).
Checked with MSRDumper:

7/21/11 10:14:39.000 PM	kernel	MSRDumper CoreMulti(16) 
7/21/11 10:14:39.000 PM	kernel	MSRDumper PStatesReached: 16 20 35 36 37 38 
7/21/11 10:14:40.000 PM	kernel	MSRDumper CoreMulti(37) 
7/21/11 10:14:40.000 PM	kernel	MSRDumper PStatesReached: 16 20 35 36 37 38 
7/21/11 10:14:40.000 PM	kernel	MSRDumper CoreMulti(16) 
7/21/11 10:14:40.000 PM	kernel	MSRDumper PStatesReached: 16 20 35 36 37 38 
7/21/11 10:14:41.000 PM	kernel	MSRDumper CoreMulti(37) 
7/21/11 10:14:41.000 PM	kernel	MSRDumper PStatesReached: 16 20 35 36 37 38 
7/21/11 10:14:41.000 PM	kernel	MSRDumper CoreMulti(16)