studio217 Posted July 25, 2010 Share Posted July 25, 2010 Hello everyone, I need some help please if anyone knows anything that could possibly help out. I just completed a semi successful snow leopard instal on my custom built PC. Specs: Gigabyte X58A-UD5 Intel 930 I7 Nvidia 1GB 9800 GT Intel XM25 80Gb HD 12Gb Corsair Dominator memory Apple Snow Leopard 10.6.4 Latest F5 Gigabyte Bios Everything seemed to be fine until I plugged in my Apogee Ensemble Audio Device. ( I installed the latest avail driver software for the unit) I have done many extensive test and here are the final results. If I leave EIST CPU Function "enabled" in the Bios and have the Apogee Ensemble plugged into any firewire port ie, on board, or via a mac compatible PCIe host card I get a very annoying and unbearable high pitched whine/squeal. If I "disable" EIST CPU function in bios and leave the unit plugged in then the noise disappears, HOWEVER my Geekbench score drops to 4900 down from 8600 with it "enabled" If I unplug the Apogee firewire unit it does not matter if EIST is enabled or disabled, there is absolutely no noise then. And yes I have the C1E disabled as well as per many forums, but that does not affect it in any way. I would not mind just leaving the EIST "disabled" but I feel that I am loosing some serious horse power by having it "disabled" So in closing, having this Apogee Ensemble firewire unit plugged in while EIST CPU is "enabled" produces a high pitched squeal/whine from the CPU area, and Disabling it does away with the sound but drops my benchmark score almost in half. If anyone could please help out with this I would be so very grateful,, this is all that is keeping this from being a completely successful Hackintosh experience. Thank you in advance for any help anyone may have. Kindest regards, Matt. Link to comment Share on other sites More sharing options...
studio217 Posted July 26, 2010 Author Share Posted July 26, 2010 bump for any help please Link to comment Share on other sites More sharing options...
FKA Posted July 26, 2010 Share Posted July 26, 2010 see here : http://www.insanelymac.com/forum/index.php...=225766&hl= and here : http://www.tonymacx86.com/viewtopic.php?f=14&t=678 Link to comment Share on other sites More sharing options...
studio217 Posted July 26, 2010 Author Share Posted July 26, 2010 Thank you for the reply, but I must confess I am totally lost now, I have no idea what those post are talking about or how to implement what the post are saying to do, any pointers on how to implement that stuff? Link to comment Share on other sites More sharing options...
FKA Posted July 26, 2010 Share Posted July 26, 2010 Thank you for the reply, but I must confess I am totally lost now, I have no idea what those post are talking about or how to implement what the post are saying to do, any pointers on how to implement that stuff? The link to chameleon 2 RC5 will allow you to get p and c states working properly (if they are not already working for you, I suspect they are! search voodoomonitor, this will show if p-states are working.) A lot of good background info here The tonymac link shows you how to remove certain IRQs from your DSDT file that will cause the problem you describe when speedstep is functioning. Either turn off EIST in BIOS and live with what you have - Or get CPU power management working properly and make the appropriate edits to your DSDT. D Link to comment Share on other sites More sharing options...
studio217 Posted July 26, 2010 Author Share Posted July 26, 2010 is there not a simple way to just disable all the CPU management functions in OSX so that the CPU runs at full speed all the time, and I can just disable all those functions in BIOS easily as well, I have absolutely 0 experience in DSDT or whatever. Link to comment Share on other sites More sharing options...
FKA Posted July 26, 2010 Share Posted July 26, 2010 nullCPUPM.kext will disable. However your Geek Bench score will still be down compared to with CPU PM working. D Link to comment Share on other sites More sharing options...
dongrammar Posted August 20, 2010 Share Posted August 20, 2010 Not sure if you're still here but I had the exact same problem, almost sent back a perfectly working harddrive over it. The squeal comes from your PSU. T The solution is to change the Vcore voltage from auto to the same value as the voltage on the left. If your Vcore is 1.25 then change from Auto to 1.25. It's in the BIOS. You can leave the Ce1 and EIST Enabled. Link to comment Share on other sites More sharing options...
Recommended Posts