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E6430 | Core i7 Ivy Bridge SpeedStep problem


dunghv
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I successfully installed Mavericks 10.9.2 on my Dell Latitude E6430 (detail specifications are listed in my signature). With guides from Pokenguyen, I also activated SpeedStep for Core i7 Ivy Bridge. I use AppleIntelCPUPowerManagementInfo.KEXT to check whether SpeedStep is activated or not. The result is YES. I got 5 step ! Good news.

 

Recently, I checked on HWMonitor and found out that my CPU always runs at maximum speed (3.37GHz). Only when the laptop is awaken from sleep, the CPU runs at minimum speed. Even there is no application running but CPU is at maximum speed. Please be advised that I use FORCE QUIT to end all application except FINDER.

 

Can someone help me identify the problem? May laptop consumes battery so fast and battery idicator does not update automatically.

 

Thank you so much.

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try booting with the flag -xpcm at the chameleon prompt. if it reboots immediately after that then to test the -xcpm flag you will have to patch your mach_kernel. backup your original one first before patching.

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If you want to patch kernel as Bronxteck said, run HVT and select Kexts > CPU Power Management > patch mach_kernel

 

Or

 

Run the following command in terminal:

perl -pi -e 's|\x74\x6c(\x48\x83\xc7\x28\x90\x8b\x05..\x5e\x00\x85\x47\xdc)\x74\x54(\x8b\x4f\xd8\x45\x85\xc0\x74\x08\x44\x39\xc1\x44\x89\xc1)\x75\x44(\x0f\x32\x89\xc0\x48\xc1\xe2\x20\x48\x09\xc2\x48\x89\x57\xf8\x48\x8b\x47\xe8\x48\x85\xc0\x74\x06\x48\xf7\xd0\x48\x21\xc2\x48\x0b\x57\xf0\x49\x89\xd1\x49\xc1\xe9\x20\x89\xd0\x8b\x4f\xd8\x4c\x89\xca)(\x0f\x30\x8b\x4f\xd8\x0f\x32\x89\xc0\x48\xc1\xe2\x20\x48\x09\xc2\x48\x89\x17\x48\x83\xc7\x30\xff\xce)\x75\x99(\x5d\xc3)\x90{7}|\x74\x73${1}\x74\x5b${2}\x75\x4b${3}\x66\x81\xf9\xe2\x00\x74\x02${4}\x75\x92${5}|g' "/mach_kernel"

then rebuild cache.

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Bronxtech and pokenguyen ! Thanks so much for your guides.

 

I did patch match_kernel and the problem was solved.

 

By the way, do you have any recommendation for SMBios.plist for my laptop when updating to 10.9.3. I used SMBios enclosed in the EDP and got error when updating to 10.9.3 (system uptime in nanosecond ....)

 

Thanks.

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