BNZfive Posted November 28, 2014 Share Posted November 28, 2014 Ever since DP4 and beyond my system would show me the boot logo and then once the system had started my dual monitors would lose signal and go to sleep. All the while the rest of the system continued to run. To get the system to boot completely I would take the NVDA*.kexts from DP1 and insert them into DP4 onto 10.10 GM Than came 10.10.1 and this no longer worked. BTW- I am using Chameleon as my bootloader What does work? This is what works for me: (FIRST- Backup your NVDA*.kexts AND geforce*.kexts from 10.10 GM) 1) Install 10.10.1 (from /Library/Updates/031-12265/OSXUpd10.10.1.pkg) -Software update will download the install pkg to here. I prefer not to update through SWUpdate. Installing via the pkg directly seems to go a little smoother. 2)DON'T REBOOT 3a)Use Kext Utility of your choice to install NVDA.Kexts (from DP1 found here: DP1 NVDA.zip ) AND geforce*.kexts (from 10.10 found here geforce 10.10.zip ) 3b)Use Kext Utility of your choice to install FakeSMC.kext AND any other system specific kexts you may need (audio, ethernet, trim, etc) 4. Rebuild Kext Cache ( sudo kextcache -m /System/Library/Caches/com.apple.kext.caches/Startup/Extensions.mkext /System/Library/Extensions ) 5.Reboot 6.Enjoy My system specs are as follows: GA-H61N-USB3 Rev.1 i5 2500k EVGA GT 640 2GB DDR3 Toshiba 256GB SSD Seagate 500GB HDD Western Digital 320 HDD ASUS 23" HDMI connected acer 20" DVI-D connected Link to comment Share on other sites More sharing options...
C.Frio Posted November 28, 2014 Share Posted November 28, 2014 hi.. fyi... I have an gt630..with yosemite 10.10.1.. audio voodoo 2.8.7, with clover just have to inject nvidia at "options", "graphics'... on an other machine with gtx 650 I do not inject nothing..works oob , is weird you have to put old kexts to an gt 640 to make it to work..but as it is working... c.frio 1 Link to comment Share on other sites More sharing options...
BNZfive Posted November 28, 2014 Author Share Posted November 28, 2014 Yes, it is rather odd. GT 640 should work oob. It did for 10.7-10.10 DP2 (or 3, my memory is a little foggy) but once I got to DP4 and past it would boot only so far, when time came to post the login screen my monitors would go "no signal" as the rest of the machine continued to run. Very odd indeed. I share what I have found in the off chance others are experiencing the same thing. 1 Link to comment Share on other sites More sharing options...
C.Frio Posted November 28, 2014 Share Posted November 28, 2014 hi... and if you change video port..vga,hdmi,dvi..I'm with yosemite 10.10.1..try with the final 10.10 instead DP I had issues with DP too c.frio Link to comment Share on other sites More sharing options...
BNZfive Posted November 28, 2014 Author Share Posted November 28, 2014 I did at one time try booting with just one display connected (dvi) and also using smbios of a MacPro3,1 and that worked. If I then tried to connect the second display to HDMI I would get an instant kernel panic. I then tried both displays connected to dvi (vs dvi and hdmi) and booting, that worked also. This leads me to believe that somewhere along the way the mini-HDMI port got disabled. I use HDMI for my audio so I made a backup of my 10.10 GM and experimented with kexts to find out what would get my monitors working, gfx card performing correctly, and allow sleep/wake. W/ all 10.10.1 kexts, Smbios set as MacPro3,1: Dvi + Hdmi = no login screen, monitors go "no signal" system continues to run Single Dvi = Boots correctly with full acceleration Dvi + dvi = boots correctly with full acceleration Dvi at boot + plug hdmi after login = kernel panic instantly after hdmi plugged in Link to comment Share on other sites More sharing options...
rev4turbomonster Posted November 28, 2014 Share Posted November 28, 2014 strange my gt 640 works oob but that is an asus version Link to comment Share on other sites More sharing options...
BNZfive Posted May 4, 2015 Author Share Posted May 4, 2015 This problem no longer exist with 10.10.3 Clean install of 10.10.3 works flawlessly with my system, and in particular my GT 640 (EVGA 2GB GDDR3) All ports (HDMI, DVI, DVI) work Full QE/CI acceleration System sleep/wake works HDMI audio (from GT 640) works Using Clover (legacy) as boot loader Link to comment Share on other sites More sharing options...
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