Arbitrary0984 Posted November 10, 2025 Share Posted November 10, 2025 Hi everyone, I’m currently trying to get macOS running smoothly on my system, but I’m running into a persistent black screen on the home/login page and occasional display flickering after boot. Hoping someone can help me sort this out. 💻 My Specs CPU: Intel Core i3-10105 (Comet Lake, 4C/8T) Motherboard: Gigabyte H410M S2 V3 dGPU: Nvidia GT 730 SMBIOS: iMac20,1 Bootloader: OpenCore (latest release) ⚙️ Problem Description System boots successfully to the Apple logo and progress bar. After that, I get a black screen or flickering display when the macOS home/login page should appear. I can hear system sounds or background processes running, so macOS seems to be loaded — just no proper display output. 🧩 What I’ve Tried Verified WhateverGreen + Lilu are both up to date. Adjusted SMBIOS to iMac20,1 for Comet Lake CPU. Tried disabling Inject Intel since I’m using a discrete GPU. Booted with -v and didn’t see any kernel panics or major errors. Tested multiple framebuffer patches and boot-args (agdpmod=pikera, etc.). Reset NVRAM and re-built OpenCore config. efi.zip Quote Link to comment https://www.insanelymac.com/forum/topic/361938-help-black-screen-and-flickering-after-boot-%E2%80%94-imac201-gt-730-opencore/ Share on other sites More sharing options...
strangeron Posted November 10, 2025 Share Posted November 10, 2025 Have you tried nv_disable=1 instead of nvda_drv_vrl=1 during installation? You can change it to nvda_drv_vrl=1 afterwards for the patch. Quote Link to comment https://www.insanelymac.com/forum/topic/361938-help-black-screen-and-flickering-after-boot-%E2%80%94-imac201-gt-730-opencore/#findComment-2843467 Share on other sites More sharing options...
Arbitrary0984 Posted November 10, 2025 Author Share Posted November 10, 2025 48 minutes ago, strangeron said: Have you tried nv_disable=1 instead of nvda_drv_vrl=1 during installation? You can change it to nvda_drv_vrl=1 afterwards for the patch. Befor patch it work working smoothy but after patch not Quote Link to comment https://www.insanelymac.com/forum/topic/361938-help-black-screen-and-flickering-after-boot-%E2%80%94-imac201-gt-730-opencore/#findComment-2843473 Share on other sites More sharing options...
strangeron Posted November 10, 2025 Share Posted November 10, 2025 Do you see that the graphics card is patched in the OCLP interface? Is the GT 730 a variant of the GK208? Quote Link to comment https://www.insanelymac.com/forum/topic/361938-help-black-screen-and-flickering-after-boot-%E2%80%94-imac201-gt-730-opencore/#findComment-2843494 Share on other sites More sharing options...
deeveedee Posted November 10, 2025 Share Posted November 10, 2025 Have you tried the iGPU since it outperforms the GT 730? 1 Quote Link to comment https://www.insanelymac.com/forum/topic/361938-help-black-screen-and-flickering-after-boot-%E2%80%94-imac201-gt-730-opencore/#findComment-2843497 Share on other sites More sharing options...
Arbitrary0984 Posted November 11, 2025 Author Share Posted November 11, 2025 10 hours ago, deeveedee said: Have you tried the iGPU since it outperforms the GT 730? My motherboard don't have HDMI, so I cannot use igpu and on HDMI patching post installation I am getting this error Quote Link to comment https://www.insanelymac.com/forum/topic/361938-help-black-screen-and-flickering-after-boot-%E2%80%94-imac201-gt-730-opencore/#findComment-2843512 Share on other sites More sharing options...
strangeron Posted November 11, 2025 Share Posted November 11, 2025 The problem has been reported. The patch for the Nvidia graphics card cannot be started because nvda_drv_vrl=1 is not added. Quote Link to comment https://www.insanelymac.com/forum/topic/361938-help-black-screen-and-flickering-after-boot-%E2%80%94-imac201-gt-730-opencore/#findComment-2843517 Share on other sites More sharing options...
Arbitrary0984 Posted November 11, 2025 Author Share Posted November 11, 2025 2 hours ago, strangeron said: The problem has been reported. The patch for the Nvidia graphics card cannot be started because nvda_drv_vrl=1 is not added. But if i add nvda_drv_vrl=1 and patch with open core legacy patcher it shows black screen after that Quote Link to comment https://www.insanelymac.com/forum/topic/361938-help-black-screen-and-flickering-after-boot-%E2%80%94-imac201-gt-730-opencore/#findComment-2843522 Share on other sites More sharing options...
deeveedee Posted November 11, 2025 Share Posted November 11, 2025 6 hours ago, Arbitrary0984 said: My motherboard don't have HDMI, so I cannot use igpu What ports are available on your motherboard? Quote Link to comment https://www.insanelymac.com/forum/topic/361938-help-black-screen-and-flickering-after-boot-%E2%80%94-imac201-gt-730-opencore/#findComment-2843536 Share on other sites More sharing options...
Arbitrary0984 Posted November 11, 2025 Author Share Posted November 11, 2025 11 minutes ago, deeveedee said: What ports are available on your motherboard? that the motherboard https://www.gigabyte.com/Motherboard/H410M-S2-V3-rev-10-12 Quote Link to comment https://www.insanelymac.com/forum/topic/361938-help-black-screen-and-flickering-after-boot-%E2%80%94-imac201-gt-730-opencore/#findComment-2843538 Share on other sites More sharing options...
deeveedee Posted November 11, 2025 Share Posted November 11, 2025 (edited) Wow - that particular version of the H410M board is definitely intended for a dGPU. Now I understand. EDIT: You may want to consider a USB -> HDMI adapter. Edited November 11, 2025 by deeveedee 1 Quote Link to comment https://www.insanelymac.com/forum/topic/361938-help-black-screen-and-flickering-after-boot-%E2%80%94-imac201-gt-730-opencore/#findComment-2843542 Share on other sites More sharing options...
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