[Solved] OC 0.5.8 Catalina Black screen for seconds - minutes after wakeup from sleep in OSx86 10.15 (Catalina) Posted June 6 · Edited June 6 by dmpcoke On 6/4/2020 at 9:15 PM, tonyx86 said: Sorry about my confusion - I was remembering HDMI from someone else's post. You may also want to read more like this post here - others have reported sleep problems when using only 2 displays. You may need to disable your 3rd unused framebuffer connector. Also see here. Thanks @tonyx86 I've tried and found a solution finally, not that perfect but it works. For anyone who may search for a possible solution here: 1. iGPU patching using Hackintool >>In Patch - Patch - General, choose DeviceProperties, check Connectors, VRAM, Graphic Device, Auto Detect Changes, Use AllData Method. >> Click on "Generate Patch" and then overwrite config using "File" - "Export" - "Bootloader config.plist" 2. Choose dp 1.1 on my monitor OSD (My monitor still runs 4K @ 60 Hz even I switch to 1.1) Now I don't get black screen anymore when it wakes up from sleep.