Hi Mercurysquad, I install the speedstep 1.4 on my lap Dell M6300 (Itakos 4i/9.2 kernel) , everything work fine but my CPU (T7500) speed info in about Mac display a stranger frequency ( 4.30 GHz ) How to fix it ?

same here with E6600. it shows 4.30GHz instead of 2.4

Can you please post the output of

sysctl hw | grep frequency

and

sysctl -a | grep throttle

Thanks Mer! I've up to 10.5.5 from Apple , sleep work ok but this issues still there.
My Sysctl hw grep :

hw.tbfrequency: 1000000000
hw.cpufrequency_max: -2094967296
hw.cpufrequency_min: 800000000
hw.cpufrequency: 1456000000
hw.busfrequency_max: 800000000
hw.busfrequency_min: 800000000
hw.busfrequency: 800000000
hw.busfrequency = 800000000
hw.cpufrequency = 2200000000
hw.tbfrequency = 1000000000

Sysctl -a grep throttle :

kern.exec: unknown type returned
kern.cputhrottle_curfreq: 2200
kern.cputhrottle_curvolt: 1388
kern.cputhrottle_freqs: 800 1200 1600 2200
kern.cputhrottle_factoryvolts: 876 988 1148 1388
kern.cputhrottle_ctl: 2859
kern.cputhrottle_auto: 1
kern.cputhrottle_targetload: 30

Look.
It is a problem of IntelSpeedStep only. After it replacing by other driver all is OK.

I know, I'm working on it.

Had the same problem, the DSDT + SMBIOS Chameleon fixed it, I have T7250, so 2Ghz.


Into SystemConfiguration/com.apple.Boot.plist

It not help me. Only way is to delete IntelSpeedStep.