ruiloureiro Posted April 1, 2020 Share Posted April 1, 2020 (edited) I have installed Catalina (10.15.3) on my desktop, using this guide (made for my motherboard): https://mcdojf.wixsite.com/z68x My specs are: Motherboard: Gigabyte Z68X-UD3H-B3 CPU: Intel i5 2500k GPU: Sapphire RX 580 Nitro 8GB RAM: Corsair Vengeance 8gb DDR3 I'm unable to boot when using my dedicated gpu (sapphire RX580). After the clover menu, the screen goes black and flashes and flickers from time to time. The last log message I see is IOConsoleUsers: gIOScreenLockState 3, hs 0, bs 0, now 0, sm 0x0 Since I don't have a DP cable, I've only tried HDMI. When I disconnect the RX580 and use my igpu, it boots normally. When I try to disable CSM on the motherboard BIOS and I have the RX580 connected, the CSM goes back to enabled when I restart. Without the RX580 (using the igpu), the CSM stays disabled and I can boot fine. The RX580 was bought secondhand, but I have used it in windows without any issue for 3 months. Below I have attached my clover folder. Any help will be greatly appreciated. CLOVER.zip Edited April 1, 2020 by ruiloureiro Link to comment https://www.insanelymac.com/forum/topic/343214-blackscreen-on-clover-boot-when-using-rx580/ Share on other sites More sharing options...
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