Important: 10.7.4 and Sandy Bridge CPU PM Temporary Fix

[roberdo]

SSDT from my Z68X-UD3H-B3 with an i5-2500K

Z68x-UD3H-B3-i2500k.SSDT.aml

Works fine with Z68MA-D2H-B3 with i5-2500K.

I get the following P-States:

MSRDumper PStatesReached: 16 17 18 19 20 34 35 36

So the only Pstate that is missing and that I got before is 37. Afaik 37 is turbo when only a single core is busy. I can live with this, most of the time 16 or 34 is active.

 

[Erasic]

SSDT from my Z68X-UD3H-B3 with an i5-2500K

Z68x-UD3H-B3-i2500k.SSDT.aml

Works fine with Z68MA-D2H-B3 with i5-2500K.

I get the following P-States:

MSRDumper PStatesReached: 16 17 18 19 20 34 35 36

So the only Pstate that is missing and that I got before is 37. Afaik 37 is turbo when only a single core is busy. I can live with this, most of the time 16 or 34 is active.

I have the same MB ... will this work for the i7 2600K too?

 

[Allsop]

Re: IMPORTANT: 10.7.4 and Unlocked Sandy Bridge CPUs [TEMP FIX]

I have an i7-2700k but I'm scared to mess things up. Anyone else with this processor?

I have and the only solution to be able to boot was to edit the boot plist.

 

[Badaboum03]

done , 2500k & Z68MA-D2H-B3.
installed 10.7.4, rollback HDA, changed the boot file.
rebooted, 11k geekbench, thanks

 

[wiraone]

Motherboard: ASUS P8Z68-V PRO CPU: i7-2600K
Install Combo Update 10.7.4 and MultiBeast 4.4.0
OK

Have you checked the speed using geekbench? Mine was okay too but checking the speed, it was halved i.e. stuck at 1.6GHz. So, back to 10.7.3 now. I've the same motherboard and cpu as you have.

 

[artgub]

Hey guys, can anybody tell me what do these numbers mean:

...
Package (0x06)
{
    0x00000E75, // frequency?
    0x000493E0, // ???
    0x0000000A, // ?
    0x0000000A,
    0x00002600, // multiplier?
    0x00002600
}
...

I want to know what numbers I should use when adding missing states. The most interesting one is number marked with three question marks.
Thanks.. : )

 

[FishCow]

What I cant seem to understand is why my system hangs with DropSSDT=Yes. No one yet has had an issue like this other than me :/

I have the same issue using DropSSDT=Yes . . .
Asus P8P67 Deluxe i7 2600K
I was wondering if you actually have to have a proper SSDT.aml if you use the line:
DropSSDT=yes?

Mine works with DropSSDT without an SSDT file. I have Asus P8Z68-M Pro.

Only isssue I see is that the system has only two PStates: 16 and 43. I would like to create an SSDT but the information is sparse and not very coherent.

FWIW, just using NulCPUPM for the time being and no over clocking.
Will wait for a fix.
Thanks for the info and help here.

 

[dm5253]

Hey guys, can anybody tell me what do these numbers mean:

...
Package (0x06)
{
    0x00000E75, // frequency?
    0x000493E0, // ???
    0x0000000A, // ?
    0x0000000A,
    0x00002600, // multiplier?
    0x00002600
}
...

I want to know what numbers I should use when adding missing states. The most interesting one is number marked with three question marks.
Thanks.. : )

Page 409 of the ACPI Spec.

Package {
?CoreFrequency                 // Integer (DWORD) 
Power                        // Integer (DWORD) 
Latency                      // Integer (DWORD) 
BusMasterLatency            // Integer (DWORD) 
Control                      // Integer (DWORD)
Status                       // Integer (DWORD)
}

 

[custom-mac]

The differences are between the 2 SSDT.
1.Greggen's SSDT(the original made by Revo Girl) is pointed to Apple in the first row.Just including the CPU0 because the oder cores will use the statement of CPU0.
No errors when complying.
2.Racerx90's SSDT is pointed to Intel in the first row.Including CPU0-CPU4.
Cca.30 errors when complying.

I also use a SSDT table,and I got Pstates 16,17,18,19,20,35,38,40
The 42 which is the max freq. can not be shown because the system uses it only on the boot process.
For somebody who uses the i7 2600K processor.
In the UEFI bios set the frequency 35,38,40,42(Revo Girl's Blog and follow her instruction just Googly).
The attached SSDT use for your risk.

Used your SSDT on my system:
Before: MSRDumper PStatesReached: 16 35
After: MSRDumper PStatesReached: 16 20 35 36 37

Upgraded to Chimera 1.9.2:
MSRDumper PStatesReached: 16 20 35 36 37 38

It is better then before...

PS: Just apply edits to plist as described at the first post and drop SSDT.aml to Extra folder. Get MSRDumper.kext.zip from InsanelyMac and load/unload it to read results from Console app (usage instructions are provided on forum page).

 

[rimmi2002]

To use one of the SSDT files here. Do I just put it in the extra folder, where the regular dsdt is? Or do I have to do any modifications to org.chameleon.boot.plist file?

I assume enable p and c states = yes or can I put those as no now?