dawidziaja Posted December 4, 2020 Share Posted December 4, 2020 Hi, I'm attempting to install Catalina on a Toshiba Portege R930-117. I've been following this guide for my opencore setup. The laptop has an Intel i7-3520M (Ivy Bridge) CPU with built-in intel HD graphics 4000 and a 1366x768 display. I have managed to get the system to boot, with the verbose boot info showing on the laptop display until it goes black, at which point, if a HDMI display is connected, it will show the installer on there, but never on the laptop's display. I have tried changing the AAPL,ig-platform-id in PciRoot(0x0)/Pci(0x2,0x0) in device properties and through boot-args in the config.plist to: 0x01660001 (01006601), 0x01660002 (02006601), 0x01660008 (08006601), 0x01660009 (09006601), 0x01660003 (03006601), 0x01660004 (04006601). Any help with what I should try next would be greatly appreciated. Quote Link to comment https://www.insanelymac.com/forum/topic/345965-no-output-on-laptop-internal-display-catalina-installer/ Share on other sites More sharing options...
dawidziaja Posted December 5, 2020 Author Share Posted December 5, 2020 I've attatched my EFI folder and my IOReg. efi.zip ioreg.zip Quote Link to comment https://www.insanelymac.com/forum/topic/345965-no-output-on-laptop-internal-display-catalina-installer/#findComment-2746297 Share on other sites More sharing options...
dawidziaja Posted December 6, 2020 Author Share Posted December 6, 2020 Changing "GFX0" to "IGPU" IN SSDT-PNLF didn't make any difference, but I managed to dump the EDID and inject it and that has fixed my issue! Thanks for your help Quote Link to comment https://www.insanelymac.com/forum/topic/345965-no-output-on-laptop-internal-display-catalina-installer/#findComment-2746341 Share on other sites More sharing options...
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