kushwavez Posted December 24, 2018 Share Posted December 24, 2018 (edited) Hello! I had a working Sierra 10.12.6 Setup. Mobo: GIGABYTE P61-USB3-B3 (H61 Intel 6 series Chipset, Cougar point, No IGPU, only discrete, Legacy BIOS) CPU: i5-2300 2.9 GHz (Sandy Bridge) GPU: MSI Radeon RX 580 8GB 1. Yesterday I tried to install Mojave but I can't get to the installation screen, I getting black screen after booting. I have 2 HDMI monitor, they have signal, just black. - I think this problem is related to AppleGraphicsDevicePolicy, so I used iMac14,2 smbios instead of iMac12,2 -> nothing changed, same black screen. - Used several AppleGraphicsDevicePolicy patch, nothing changed. And if I understand correctly I have to change the value to "none" in Info.plist, but I can't even get to the install screen, so I can't modify the Info.plist. - Some users can get signal when using DP ports, but my monitors don't have DP connectors, just HDMI. - Tried WhateverGreen + Lilu (same happens without them) and Inect ATI = true, RadeonDeInit = true (same without deinit) - My motherboard doesn't have IGPU, so I can't enable that, i'm just on the discrete. - Some users got to the installation screen by disabling CSM and deleting "CsmVideoDxe-64.efi" : my motherboard is Legacy BIOS (with Hybrid EFI technology) I don't have CSM option - At Sierra it's good, my 2 monitor recognized correctly. So maybe if I will able to edit that Info.plist I can finally have signal, I don't know. Appreciate any help. UPDATE: Got signal on my 1st monitor with DP -> HDMI Installed Mojave without problem, booted to desktop. -> HDMI ports are not working neither DVI, just DP. Looking for a solution. 2. 2nd problem is that my SATA drive doesn't appear in Disk Utility. - At Sierra no problem - High Sierra, no drives -> fixed by restoring AppleAHCIPort.kext v328 to S/L/E - This problem maybe related to my chipset, because maybe that is not supported anymore (Intel 6 Series chipset, H61) - At Mojave I tried to modify the BaseSystem.dmg in the Mojave Installer.app to restore AppleAHCIPort.kext v328 -> My drives got recognized but not initialized, also broke the partition and I have to reformat. - Tried another AHCIInjectors, nothing changed. - AHCI-SATA: Enabled in BIOS -> Fix in #4 Post CLOVER_legacy_p61.zip Edited February 3, 2019 by rtke333 Link to comment https://www.insanelymac.com/forum/topic/336995-p61-usb3-b3-intel-6-series-rx-580-no-sata-drives-and-black-screen/ Share on other sites More sharing options...
bigben1 Posted December 24, 2018 Share Posted December 24, 2018 to install Mojave don't use Hdmi port but try DP to install , once installed then u can switchover to HDMI ports. Link to comment https://www.insanelymac.com/forum/topic/336995-p61-usb3-b3-intel-6-series-rx-580-no-sata-drives-and-black-screen/#findComment-2655434 Share on other sites More sharing options...
Gigamaxx Posted December 25, 2018 Share Posted December 25, 2018 DisplayPort to HDMI adapter? Link to comment https://www.insanelymac.com/forum/topic/336995-p61-usb3-b3-intel-6-series-rx-580-no-sata-drives-and-black-screen/#findComment-2655493 Share on other sites More sharing options...
kushwavez Posted January 8, 2019 Author Share Posted January 8, 2019 Fixed SATA problem with : new ICH patch by vit9696. AppleAHCIPort Find 40600200 Replace 00000000 You're right guys, but I didn't have a DP to HDMI adapter. Now I got one, so I tested it: Got signal on my 1st monitor with DP -> HDMI Installed Mojave without problem, booted to desktop. -> HDMI ports are not working, just DP. Looking for a solution. Link to comment https://www.insanelymac.com/forum/topic/336995-p61-usb3-b3-intel-6-series-rx-580-no-sata-drives-and-black-screen/#findComment-2657973 Share on other sites More sharing options...
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