tegezee said:
UPDATE:
THIS GUIDE IS VERY SUCCESSFUL IF YOU FOLLOW THE DIRECTIONS!!!
I think I'm going to finally bail out on the 10.7.4 update. This is my 5th time through it, and everytime I get the KP screen at boot. panic(cpu 2 caller 0xffffff7f818e5136): P-State Stepper Error 18 at step 35 on CPU2. In the kernel Extensions debug backtrace, there is some mention of IOACPIFamily, and I believe the AppleIntelCPUPowerManagement (but I can't read it as it's under the restart box).
It doesn't seem to matter what boot options I try, I can never get past this point. I've triec npci=0x2000, npci=0x3000, -x, -F, -f, DSDT=null, DropSSDT=Yes, GeneratePStates=Yes.
This is my first time updating and not using the HP Probook Installer. I had my fingers crossed.
I wanted to post this up, not to complain, but just to let you guys know that there are some probook configurations that are not working. By the way, 10.7.3 works great. I was trying to update to see if XCode works on 10.7.4 I can't get it to work, someone suggested because iTunes needed updated (that's way off topic though).
Great work guys. Thanks so much for all your hard work.