Ryan Thomas Posted August 15, 2019 Share Posted August 15, 2019 Hi Guys Wonder if you can help I have a X79-UP4, 1000w PSU, 4930k, and two XFX RX580's, both cards work in all slots individually, Mojave works with 1 card perfectly and in Windows 10 works with both, Luxmark score of 29k... in windows.So both cards work, all the slots work. Hack works with 1 card , Windows works with both. BUT!! I cannot get them to work together on the hack side, kernel panics ect..., am I missing a something simple? Seems to hang around PCI Config Begin, tried all the usual boot flags npci 0x2000 & 0x3000, different System definitions, can't get it to boot. Link to comment https://www.insanelymac.com/forum/topic/339915-dual-gpus-not-booting/ Share on other sites More sharing options...
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