- Joined
- Jan 18, 2013
- Messages
- 61
- Motherboard
- HP Elite 8300 CMT
- CPU
- Intel i3-3770
- Graphics
- FirePro W7000
- Mac
- Mobile Phone
Hi,
can someone tell me what exactly NullCPUPowerManagement is doing? I've read through many threads and most people tell you that you essentially disable AppleIntelCPUPowerManagement.
I can't believe that this is entirely true because of the following situation:
- My HP Elite 8200 worked without NullCPUPowerManagement in 10.8.4 and everything i supposed to work was working (Sleep, SpeedStep, ...). Hell, this machine didn't even needs a custom DSDT/SSDT to work perfect.
- With 10.8.5. the AppleIntelCPUPowerManagement produced a KP on boot, so i had to install NullCPUPowerManagement
- With NullCPUPowerManagement everything which worked before now also works (Sleep, SpeedStep, ...), it just tooks a little more time - without any exact measures imho around 2-3 seconds longer to go to sleep and wake up again.
So my guess is that NullCPUPowerManagement simply overrides some methods in AppleIntelCPUPowerManagement which cause the KP problem. I've tried to read through the sources of the Kext but unfortunately didn't exactly found out what it's doing (eventually do to my lack of knowledge of Apple specific API calls).
Can someone please shed some light into this?
Thanks,
egrath
can someone tell me what exactly NullCPUPowerManagement is doing? I've read through many threads and most people tell you that you essentially disable AppleIntelCPUPowerManagement.
I can't believe that this is entirely true because of the following situation:
- My HP Elite 8200 worked without NullCPUPowerManagement in 10.8.4 and everything i supposed to work was working (Sleep, SpeedStep, ...). Hell, this machine didn't even needs a custom DSDT/SSDT to work perfect.
- With 10.8.5. the AppleIntelCPUPowerManagement produced a KP on boot, so i had to install NullCPUPowerManagement
- With NullCPUPowerManagement everything which worked before now also works (Sleep, SpeedStep, ...), it just tooks a little more time - without any exact measures imho around 2-3 seconds longer to go to sleep and wake up again.
So my guess is that NullCPUPowerManagement simply overrides some methods in AppleIntelCPUPowerManagement which cause the KP problem. I've tried to read through the sources of the Kext but unfortunately didn't exactly found out what it's doing (eventually do to my lack of knowledge of Apple specific API calls).
Can someone please shed some light into this?
Thanks,
egrath