tattar8 Posted August 17, 2015 Share Posted August 17, 2015 Hey, I have a ASRock Z97 Anniversary board and a Radeon R5 220 board, which seems to be identifying as a Radeon 5xxx chip. Because I'm using a Haswell-based Celeron, I have to use Clover to inject a fake CPU ID. I was able to enter the installation fine by injecting one of the hardware ID's in AMD5000Controller.kext; this caused the card to be recognized correctly. However, post-installation, at boot I am met with a black screen with a beach ball. If I disable the fake GPU ID, then the system boots, but with no acceleration, locked at 720p. How do I get the system to boot with the correct drivers? Link to comment https://www.insanelymac.com/forum/topic/307624-black-screen-with-cursor-after-yosemite-installation/ Share on other sites More sharing options...
Slice Posted August 18, 2015 Share Posted August 18, 2015 Did you mess FakeCPUID and FakeID for Radeon card? Link to comment https://www.insanelymac.com/forum/topic/307624-black-screen-with-cursor-after-yosemite-installation/#findComment-2161312 Share on other sites More sharing options...
tattar8 Posted August 18, 2015 Author Share Posted August 18, 2015 Figured it out. For some reason, entering a FakeID for a similar card didn't work, but editing AMD5000Controller.kext and AMDRadeonX3000.kext and to add support for the card's real ID did. Link to comment https://www.insanelymac.com/forum/topic/307624-black-screen-with-cursor-after-yosemite-installation/#findComment-2161539 Share on other sites More sharing options...
Slice Posted August 20, 2015 Share Posted August 20, 2015 FakeID may not work if DSDT is quirky. Link to comment https://www.insanelymac.com/forum/topic/307624-black-screen-with-cursor-after-yosemite-installation/#findComment-2161987 Share on other sites More sharing options...
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