BALDY_MAN Posted July 17, 2025 Share Posted July 17, 2025 hi all this is what. I'm using on my hacked z97 hack and rx6600 build instead of the whatevergreen kext I'm putting the frame buffer in to device Properties here's the example 2 1 Link to comment https://www.insanelymac.com/forum/topic/361372-rx6600gpu-users-perhaps-this-will-help-install/ Share on other sites More sharing options...
Montblanc Posted July 21, 2025 Share Posted July 21, 2025 Just tried it with my RX 6600 XT rig and it works well. Wondered if it might have an good/bad effect on Geek Bench 6 scores but on checking no change. Great find! Link to comment https://www.insanelymac.com/forum/topic/361372-rx6600gpu-users-perhaps-this-will-help-install/#findComment-2837512 Share on other sites More sharing options...
BALDY_MAN Posted July 21, 2025 Author Share Posted July 21, 2025 @Mountblanc Im thinking that with AMD supported cards as long as you know the frame buffer to inject. what ever green kext is not needed Link to comment https://www.insanelymac.com/forum/topic/361372-rx6600gpu-users-perhaps-this-will-help-install/#findComment-2837533 Share on other sites More sharing options...
Montblanc Posted July 22, 2025 Share Posted July 22, 2025 @BALDY_MAN You're right about not requiring WhateverGreen for AMD supported cards, at least with my limited testing with my 2 cards. My other hack runs a RX Vega 64 without WhateverGreen or Frame Buffer settings in Tahoe b3 but in sleep the fans ramp up an down. In this old thread from 2017 https://www.insanelymac.com/forum/topic/330533-inject-fb-name-for-amd-radeon-rx-vega-64/page/2/#:~:text=I-,nject FB Name For AMD Radeon RX Vega 64,-Inject I found a SSDT that injects the frame buffer and HDA sound settings. Kamarang supports H264 and Iriri supports H265 (can be used together). A quick sleep test seems ok with no ramping but I'll give it a few days. SSDT-Vega64-FBName-Kamarang.aml SSDT-Vega64-FBName-Iriri.aml 1 Link to comment https://www.insanelymac.com/forum/topic/361372-rx6600gpu-users-perhaps-this-will-help-install/#findComment-2837591 Share on other sites More sharing options...
BALDY_MAN Posted July 24, 2025 Author Share Posted July 24, 2025 @Montblanc my software side of the os. is limited. in my cases most of my gpu,s have had full water blocks. so cooling or gpu fan spin as not been a problem of me the 6600 in the back up hack is air-cooled but seems ok with just the frame buffer thought DP Link to comment https://www.insanelymac.com/forum/topic/361372-rx6600gpu-users-perhaps-this-will-help-install/#findComment-2837771 Share on other sites More sharing options...
verdazil Posted July 24, 2025 Share Posted July 24, 2025 Yes, it's possible to fully configure an AMD GPU manually via Add → Properties, without using WhateverGreen.kext. However, it's complex, fragile, and requires in-depth knowledge of macOS GPU internals. Manual method (Add → Properties): - Gives full control over framebuffer layout, connector types, device-id, audio injection, etc. - Works without WhateverGreen. - Requires you to define each property precisely (e.g., @0,connector-type, device-id, hda-gfx). - Breaks easily with macOS updates, new SMBIOS, or changes in GPU behavior. - Often needs VBIOS analysis to get correct connector layout. WhateverGreen.kext: - Automatically injects correct properties for most AMD cards. - Handles framebuffer patching, HDMI/DP issues, sleep/wake bugs, and more. - Highly recommended for stability and compatibility with modern macOS versions (Big Sur → Tahoe). - Allows additional tweaks via boot-args (e.g., -radvesa, -radpg). Thus, use WhateverGreen in almost all cases — it's stable, well-maintained, and reliable. Use manual injection via Add → Properties only if: - You fully understand framebuffer layouts, - WEG does not work properly, or you need special customization not possible with WEG. 1 Link to comment https://www.insanelymac.com/forum/topic/361372-rx6600gpu-users-perhaps-this-will-help-install/#findComment-2837778 Share on other sites More sharing options...
BALDY_MAN Posted July 24, 2025 Author Share Posted July 24, 2025 @verdazil thank you for information and the pros& cons of DP Injection and the advantages of using Whatevergreen kext.. I just tried DP injection on my two systems and it worked for me from what your saying. seems like I was lucky. if I have a problem. I will use what evergreen kext. thank again for your time explaining Link to comment https://www.insanelymac.com/forum/topic/361372-rx6600gpu-users-perhaps-this-will-help-install/#findComment-2837795 Share on other sites More sharing options...
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