Vi /System/Library/Extensions/AMDRadeonX4000.kext/Contents/ist The following instructions work for 10.14.2 No, it's a minor inconvenience to have to boot into windows first but the method works: both for 10.13 and am not familiar with the HPZ210. If the computer is put to sleep and then resumed the Cinebench 3D OpenGL benchmark drops back to 15 fps. It is not necessary to run Cinebench 3D OpenGL benchmark under Windows 10 to initialise the W4100: just booting to Windows 10 and then re-booting to High Sierra results in a high Cinebench 3D OpenGL benchmark score. In order to get the W4100 to work under High Sierra 10.13.6, I patched the Futomaki framebuffer to be consistent with the W4100, set CAIL_DisableGfxCGPowerGating to 1 - in the respective kext, and injected a graphics ID of 0圆83d1002. Does anyone have any ideas how to create the Windows initialising action under High Sierra? It is obvious that the windows 10 Cinebench 3D OpenGL benchmark is initialising the W4100. Now, if I REBOOT (with out turning off the power) into High Sierra then re-run Cinebench 3D OpenGL benchmark the result is 44 fps. If I reboot my computer into Windows 10 then run the Cinebench 3D OpenGL benchmark the result is 55 fps. There is only one problem: the Cinebench 3D OpenGL benchmark is only 15 frames per second (fps). I have an AMD FirePro W4100 2GB fully functioning (resume from sleep, HDMI audio, all ports working) under High Sierra 10.13.6
