Experimental, make a bootable backup before attempting.

Mavericks with AMD/Nvida graphics as the primary display. HD4600/HD4000/HD3000 display not required. BIOS/Boot screens and AirPlay Mirroring supported with appropriate system definition.

For both Intel and AMD/Nvidia,Same technique for Mavericks and HD4600.

Discrete Graphics

1. AMD
   
   1. HD5xxx, HD6xxx, HD 7xxx
2. Nvidia
   
   1. GT/S/X 4xx, 5xx, 6xx, 7xx

Requirements

1. OS X:
   
   1. 10.9 or newer
   2. 10.8.5: unstable, only Nvidia/HD4600 worked

Settings

1. BIOS/AMI
   
   1. Enable Integrated Graphics
   2. Set PCIE (examples)
      
      1. Init Display First: PCIE
      2. Primary Display: PCIE
2. HD4600/8 Series/Haswell
   
   1. Framebuffer: IGPlatformID=04120004
   2. SysDef: macbookpro11, macbookair6, imac14
3. HD4000/7Series/Ivy Bridge
   
   1. Framebuffer: IGPlatformID=01620007
   2. SysDef: macbookpro9, macbookair5 imac13, macmini6
4. HD3000/6 Series/Sandy Bridge
   
   1. Framebuffer: Default
   2. SysDef: macbookpro8, macbookair4, imac12, macmini5

Installation

1. Bootloader Settings (With dsdt or ssdt HDMI audio, see 2. DSDT Edits)
   
   1. Chimera/Extra
      
      1. org.chameleon.Boot.plist
         
         1. TextEdit/Set IGPlatformID
            
            1. HD4600: 04120004
            2. HD4000: 01620007
            3. HD3000: Default, no edit required
      2. smbios.plist
         
         1. MultiBeast/System/System/Definition
            
            1. macbookpro…..
   2. Clover/config.plist
      
      1. Graphics
         
         1. ig-platform-id
            
            1. HD4600: 04120004
            2. HD4000: 01620007
         2. snb-platform-id
            
            1. HD3000: 10000300
      2. SMBIOS
         
         1. automatic, no entry required.
2. DSDT edits (Without dsdt or ssdt HDMI audio, proceed to 3. Restart)
   
   1. Edit dsdt/IGPU/"AAPL,ig-platform-id"
      
      1. HD4600: 0x04, 0x00, 0x12, 0x04
      2. HD4000: 0x07, 0x00, 0x62, 0x01
      3. HD3000: no edit required
3. Restart
4. BIOS
   
   1. Advanced Menu
      
      1. System Agent Configuration
         
         1. Primary Display/Init Display First, etc.
            
            1. PCIE
   2. Exit
   3. Save
   4. Restart

Note

1. Boot times likely to increase.

Problem Reporting

1. Motherboard/BIOS version/processor/graphics/OS and version
2. Bootloader and version
3. org.chameleon.Boot.plist or config.plist
4. Copy of IOReg/Select Raw Data audio_ALCInjection/IORegistryExplorer_v2.1.zip at master · toleda/audio_ALCInjection