I have a RadeonHD 7770 and it is not working after I upgraded from 10.10.2 Yosemite. I could only boot to a 100% progress bar, spinning beachball, scambled and a white screen...Here is a fix. Before you make the leap to 10.10.3, ensure you minimise your chances of stuffing things up. 1. Download the 10.10.3 combo update: https://support.apple.com/kb/DL1804?locale=en_us 2. Repair Disk Permissions Code: Select All sudo diskutil repairPermissions / 3 Backup your current installation using Time Machine and Carbon Copy Cloner or SuperDuper. 4 Download the latest MultiBeast (if you do not use clover) and Kext Utility or DPCI Manager http://www.tonymacx86.com/downloads.php?do=file&id=254 http://www.hackintoshosx.com/files/file/4279-kext-utility-yosemite/ http://sourceforge.net/projects/dpcimanager/ 5 Backup your EFI (if you use Clover) 6 Download and install the latest Clover (if you use clover) http://sourceforge.net/projects/cloverefiboot/ 7 Run the combo update 8 Reboot with: Code: Select All -x -f -v if you get the following error or cannot boot: Code: Select All ** GPU Hardware VM is enabled (multispace: enabled, page table updates with DMA: enabled) 9 After sucessful boot, Push Command+Shift+G (go to folder) 10 Type, then push enter Code: Select All /System/Library/Extensions 11 Right click on AMDRadeonX4000.kext and show package contents. In the plist change the following values: Code: Select All <key>cail_properties</key> <dict> <key>CAIL_DisableDrmdmaPowerGating</key> <integer>1</integer> <key>CAIL_DisableDynamicGfxMGPowerGating</key> <integer>1</integer> <key>CAIL_DisableGfxCGPowerGating</key> <integer>1</integer> <key>CAIL_DisableGmcPowerGating</key> <integer>1</integer> <key>CAIL_DisableStaticGfxMGPowerGating</key> <integer>1</integer> <key>CAIL_DisableUVDPowerGating</key> <integer>0</integer> <key>CAIL_DisableVCEPowerGating</key> <integer>1</integer> </dict> 12. Drag the file in kext utility or DPCI Manager to repair permissions 13 Run MultiBeast (if you use multibeast) for Yosemite and just select your audio driver to install. If you have an SSD use trim enabler app or the trim patch. 14 Once all is well, repair disk permssions again and backup If all that fails, look at my previous thread, restoring from a time machine backup: https://xiaopan.co/forums/threads/restore-a-hackintosh-from-a-time-machine-backup.8394/ Based in part from this thread at tonymac http://www.tonymacx86.com/graphics/161511-radeon-hd-7750-xfx-glitchy-after-10-10-3-update.html No audio after upgrade? https://xiaopan.co/forums/threads/get-realtek-audio-back-after-hackintosh-upgrade.8396/
Update 8/11/2015 For Hackintosh Users...upgrade to El Capitan 10.11.x please read this thread for GPU Fix: https://xiaopan.co/forums/threads/create-a-hackintosh-with-asus-motherboards.4591/page-7#post-31281
