- Joined
- Jan 9, 2015
- Messages
- 336
- Motherboard
- Lenovo Y50-70
- CPU
- i7-4710HQ 2.5GHz Haswell
- Graphics
- Intel HD 4600 / nVidia GeForce 860m 4GB
- Mac
- Classic Mac
- Mobile Phone
[Guide] Lenovo Y50
I think I found the problem, it's the pstates.
Basically this is what I see in Console:
"2/14/15 6:49:16.000 PM kernel[0]: AICPUPMI: CPU P-States [ 8 10 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 (33) 34 35 ] iGPU P-States [ 4 8 9 10 11 12 13 (14) 15 16 ]"
Looks fine right ?
BUT, it never drops under 2.74. It mostly runs at over 3 ghz. I checked with Intel Power Gadget. Basically it clocks the cpu at a very high frequency and obviously that it's gonna run out of battery pretty soon. At least thats what I guess/think.
I only have Console, Activity Monitor, Safari and Intel Power Gadget open.
Attached IOReg and screenshot of Intel Power Gadget (look at that power consumption...).
Just change to other Haswell smbios and test. But you should verify CPU PM/IGPU PM/nvidia disable/AppleLPC first.
Using IORegistryExplorer, check:
- search for AppleLPC (you should find it)
- search for NullCPU (you should NOT find it)
- search for X86PlatformPlugin (you should find it)
- graphics object is called IGPU, not GFX0
- nvidia is disabled... search for nvda [going from memory] (you should NOT find it)
In addition, test pstates.
I think I found the problem, it's the pstates.
Basically this is what I see in Console:
"2/14/15 6:49:16.000 PM kernel[0]: AICPUPMI: CPU P-States [ 8 10 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 (33) 34 35 ] iGPU P-States [ 4 8 9 10 11 12 13 (14) 15 16 ]"
Looks fine right ?
BUT, it never drops under 2.74. It mostly runs at over 3 ghz. I checked with Intel Power Gadget. Basically it clocks the cpu at a very high frequency and obviously that it's gonna run out of battery pretty soon. At least thats what I guess/think.
I only have Console, Activity Monitor, Safari and Intel Power Gadget open.
Attached IOReg and screenshot of Intel Power Gadget (look at that power consumption...).