kamyar1979 Posted October 23, 2018 Share Posted October 23, 2018 (edited) I have bought a 2nd hand AMD Radeon 7750 to fix my Mojave installation problems. Although the Vendor/Device Id is in AMD7000Controller.Kext, I get a black screen and with some changes a yellow screen. I can not find any useful information to fix that. All information are for High Sierra and older macOS versions. Is there any fix to resolve that? What if I buy an RX 650 for example? Edited October 23, 2018 by kamyar1979 Link to comment Share on other sites More sharing options...
Cyberdevs Posted October 23, 2018 Share Posted October 23, 2018 Hi @kamyar1979 and welcome to insanelymac.com Please update your signature with your hardware specs so we can help you easier. There are several ways to resolve the black screen issue on AMD GPUs. The procedure is the same for High Sierra and Mojave. 1. Use RadeonDeInint=true injection in the config.plist under the Graphics Section. You might also need to set InjectATI=true as well, test with and without InjectATI=true and see if that helps. 2. Use the AGDP patch in the config.plist under the kernel and Kext patches: Name: com.apple.driver.AppleGraphicsDevicePolicy Find: BA050000 00 Replace: BA000000 00 Comment: Disable board-id check to prevent no signal © lvs1974, Pike R. Alpha, vit9696 3. Using WhateverGreen.kext and Lilu.kext which should be placed inside the /EFI/Clover/kexts/Other. If you are going to use these kext files you shouldn't use InjectAti=True and you should not Inject the Framebuffer in the config.plist. 4. Using a SSDT for your GPU. The RX 560 (Which I assume is what you mean by saying RX 650) should work OOB because it has the native support in macOS 10.12.6 and newer. There are several reports on people having issues activating their 7750/7770 GPUs in High Sierra and probably Mojave. Good luck. 1 Link to comment Share on other sites More sharing options...
refinery Posted August 28, 2019 Share Posted August 28, 2019 i can confirm the method linked above by Herve worked for me on my ASRock Z87 Extreme TB4 with an XFX single slot HD7750 and 10.14.6. Link to comment Share on other sites More sharing options...
bloodsteam Posted November 11, 2019 Share Posted November 11, 2019 is that possible to flash R7 250X? as we know R7 250X is equal to HD7770 Link to comment Share on other sites More sharing options...
Cyberdevs Posted November 11, 2019 Share Posted November 11, 2019 5 hours ago, bloodsteam said: is that possible to flash R7 250X? as we know R7 250X is equal to HD7770 Why would you wanna do that? They have the same device ID 0x683D. Link to comment Share on other sites More sharing options...
bloodsteam Posted November 26, 2019 Share Posted November 26, 2019 On 11/12/2019 at 3:06 AM, Cyberdevs said: Why would you wanna do that? They have the same device ID 0x683D. I cannot install high sierra run by R7 250x. if you know just send me the link. Link to comment Share on other sites More sharing options...
Slice Posted November 28, 2019 Share Posted November 28, 2019 Sometimes Verde.kext is usefull for 7750/7770 cards. Link to comment Share on other sites More sharing options...
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