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  1. We have two options to make the 6650M work: (Check pages 28-30 for fixing the gradients issue) ( Radeon HD 6470M Users read page 17-19 and 31-32, I will update my OP soon with 6470M stuff also) Don't ask for help if you don't have: VBIOS, DSDT, IOReg file from your system (Switchable Graphic Cards are not supported) Howto VBIOS: Here VBIOS.zip, if AIDA64 is not working try this: http://www.insanelymac.com/forum/topic/277042-amd-radeon-hd-6650m-graphics-enabler-dsdt-hdmi-audio-acer-aspire-7750g-2674g50mnkk/?p=1845018 Howto Kext patching here 1. With DSDT patch + patched ATI6000Controller.kext 2. GraphicEnabler=Yes + Patched ATI6000Controller.kext But we can't use the same kexts. I will cover first the DSDT patch + patched ATI6000Controller.kext ATI 6650M 2GB SubsystemVendorID: 0x1025 SubsystemID: 0x050e Original Ipomoea configuration: 00 04 00 00 04 03 00 00 00 01 00 00 12 04 01 05 00 08 00 00 04 02 00 00 00 01 00 00 11 02 04 03 10 00 00 00 10 00 00 00 00 01 00 00 00 00 00 02 My best discovered Ipomoea configuration for DSDT + Patched ATI6000Controller.kext: 02 00 00 00 40 00 00 00 09 01 00 00 10 01 00 03 00 08 00 00 00 02 00 00 00 01 00 00 11 02 04 01 10 00 00 00 10 00 00 00 00 01 00 00 00 00 01 05 My best discovered Ipomoea configuration for GraphicsEnabler + Patched ATI6000Controller.kext: 02 00 00 00 40 00 00 00 09 01 00 00 20 01 00 03 00 08 00 00 00 02 00 00 00 01 00 00 11 02 04 01 10 00 00 00 10 00 00 00 00 01 00 00 00 00 01 05 I am now using this combination of HotPlugIDs, I will update the kexts eventually. 02 00 00 00 40 00 00 00 09 01 00 00 10 01 00 03 00 08 00 00 00 02 00 00 00 01 00 00 11 02 01 01 10 00 00 00 10 00 00 00 00 01 00 00 00 00 02 05 1. Downloads ATI 6650M 2GB SubsystemVendorID: 0x1025 SubsystemID: 0x050e (DSDT patch + patched ATI6000Controller.kext) 10.6.8_ATI6000Controller.kext.zip 10.7.0_ATI6000Controller.kext.zip 10.7.2_ATI6000Controller.kext.zip 10.7.3_ATI6000Controller.kext.zip 10.7.4_ATI6000Controller.kext.zip 10.7.5_ATI6000Controller.kext.zip 10.8.DP4_ATI6000Controller.kext.zip 10.8.2_ATI6000Controller.kext.zip 10.8.3_ATI6000Controller.kext.zip 10.8.4_ATI6000Controller.zip =============================================== ATI6000Controller_10.9_DP1.zip You need to replace Device (PEGP) in your DSDT with this code for the above kexts to work. Change "VRAM,totalsize", to 0x00, 0x00, 0x00, 0x40 if you have 1 GB VRAM. But first you need to convert your VBIOS.rom to DSDT code with rom_dsdt_converter.exe (download here) and paste it in "ATY,bin_image", like this: ========================================================================== "AAPL,slot-name", Buffer (0x0C)\n { "PCIe Slot-1" }, "ATY,bin_image", <= Look for this line in the code for Device(PEGP) below Buffer () <= leave Buffer empty! { PASTE YOUR CONVERTED VBIOS HERE IN ON ONE LINE }, "device_type", Buffer (0x12) { "ATY,IpomoeaParent" }, ========================================================================== You can download this PEGP2_6650M_2GB.txt.zip patch for the PEGP and apply it with DSDTParser.jar but you still need to manualy insert the converted VBIOS for the 6650M to be recognized by the OS and of course Device (HDAU) for HDMI Audio. Place it just above Device (PEGP). You also need to apply the DTGP patch before compiling your DSDT. This is how it should be shown in IORegistryExplorer Device (HDAU) { Name (_ADR, One) Method (_DSM, 4, NotSerialized) { Store (Package (0x02) { "hda-gfx", Buffer (0x0A) { "onboard-1" } }, Local0) DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0)) Return (Local0) } } Device (PEGP) { Name (_ADR, Zero) Name (_PRW, Package (0x02) { 0x09, 0x04 }) Method (_DSM, 4, NotSerialized) { Store (Package (0x2E) { "@0,compatible", Buffer (0x0C) { "ATY,Ipomoea" }, "@0,device_type", Buffer (0x08) { "display" }, "@0,display-dual-link", Buffer (0x04) { 0x01, 0x00, 0x00, 0x00 }, "@0,display-type", Buffer (0x04) { "LCD" }, "@0,name", Buffer (0x0C) { "ATY,Ipomoea" }, "@1,compatible", Buffer (0x0C) { "ATY,Ipomoea" }, "@1,device_type", Buffer (0x08) { "display" }, "@1,connector-type", Buffer (0x04) { 0x00, 0x08, 0x00, 0x00 }, "@1,display-type", Buffer (0x05) { "NONE" }, "@1,name", Buffer (0x0C) { "ATY,Ipomoea" }, "@2,compatible", Buffer (0x0C) { "ATY,Ipomoea" }, "@2,device_type", Buffer (0x08) { "display" }, "@2,connector-type", Buffer (0x04) { 0x10, 0x00, 0x00, 0x00 }, "@2,display-type", Buffer (0x05) { "NONE" }, "@2,name", Buffer (0x0C) { "ATY,Ipomoea" }, "AAPL00,DualLink", Buffer (0x04) { 0x01, 0x00, 0x00, 0x00 }, "AAPL,slot-name", Buffer (0x0C) { "PCIe Slot-1" }, "ATY,bin_image", Buffer () { PASTE CONVERTED VBIOS HERE IN ONE LINE THAN COMPILE }, "device_type", Buffer (0x12) { "ATY,IpomoeaParent" }, "VRAM,totalsize", Buffer (0x04) { 0x00, 0x00, 0x00, 0x80 }, "model", Buffer (0x18) { "AMD Radeon HD 6650M 2GB" }, "name", Buffer (0x12) { "ATY,IpomoeaParent" }, "hda-gfx", Buffer (0x0A) { "onboard-1" } }, Local0) DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0)) Return (Local0) } } } 2. Downloads ATI 6650M 2GB SubsystemVendorID: 0x1025 SubsystemID: 0x050e (GraphicsEnabler=Yes + patched ATI6000Controller.kext) 10.6.8_ATI6000Controller.kext.SubsystemID.050E.zip 10.7.0_ATI6000Controller.kext.SubsystemID.050E.zip 10.7.2_GE_ATI6000Controller.kext.zip 10.7.3_GE_ATI6000Controller.kext.zip 10.7.4 10.7.5 10.8.DP4_GE_ATI6000Controller.kext.zip 10.8.2_GE_ATI6000Controller.kext.zip 10.8.3_GE_ATI6000Controller.kext.zip 10.8.4_GE_ATI6000Controller.zip Chameleon_boot.zip Chimera_boot.zip (These are outdated versions of Chameleon and Chimera bootloaders, I will recompile newer versions if needed) Latest Chameleon (24.02.2013) compiled with these SubsystemIDs Chameleon_boot.zip { 0x6741, 0x050E1025, CHIP_FAMILY_TURKS, "AMD Radeon HD 6650M", kIpomoea }, { 0x6741, 0x050F1025, CHIP_FAMILY_TURKS, "AMD Radeon HD 6650M", kIpomoea }, { 0x6741, 0x05131025, CHIP_FAMILY_TURKS, "AMD Radeon HD 6650M", kIpomoea }, Chameleon boot v2 Chameleon_boot_v2.zip , added SubsystemID 107C, SubsystemVendorID: 0x1043 { 0x6741, 0x107C1043, CHIP_FAMILY_TURKS, "AMD Radeon HD 6650M", kIpomoea },
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