apoorv Posted January 20, 2021 Share Posted January 20, 2021 Z490 Aorus Ultra, i7 10700, iGPU only (for now) -> The mobo does not have a DisplayPort, so stuck on HDMI. OpenCore 0.6.5, trying to install Catalina 10.15.7 The USB boots successfully, but just before I expect it to go to the Apple logo - I lose all video output. Here's a screenshot of the Device Properties. I tried using 00009B3E as well (as per the OpenCore guide for Comet Lake) but no joy there either. DVMT in BIOS is set to 64MB, so I removed the framebuffer properties, but there is Lilu and WG in the Kexts folder. Some other screenshots along the way : https://imgur.com/a/Q6BSfc0 Any recommendations? Link to comment Share on other sites More sharing options...
BALDY_MAN Posted January 20, 2021 Share Posted January 20, 2021 Could you not use a cheap GPU. ie (Nvidia GT710) Link to comment Share on other sites More sharing options...
Middleman Posted June 26, 2021 Share Posted June 26, 2021 On 1/21/2021 at 1:36 AM, apoorv said: Z490 Aorus Ultra, i7 10700, iGPU only (for now) -> The mobo does not have a DisplayPort, so stuck on HDMI. OpenCore 0.6.5, trying to install Catalina 10.15.7 The USB boots successfully, but just before I expect it to go to the Apple logo - I lose all video output. Here's a screenshot of the Device Properties. I tried using 00009B3E as well (as per the OpenCore guide for Comet Lake) but no joy there either. DVMT in BIOS is set to 64MB, so I removed the framebuffer properties, but there is Lilu and WG in the Kexts folder. Some other screenshots along the way : https://imgur.com/a/Q6BSfc0 Any recommendations? Okay, to boot Catalina with the 10700 you will first need to remove any CPUID references in the Kernel section because Catalina natively supports Comet Lake. Second you need to upgrade to OC 0.6.9. which has the full CML CPU identification support within OC, making it easier to run. Third, your device properties for the IGPU needs to change to 00009BC5 for AAPL,ig-platform-id and 9BC50000 for the device-id (this is the real device ID of the 10700 IGPU). You should also add the framebuffer-patch-enable, framebuffer-stolenmem,framebuffer- unifiedmem and framebuffer-fbmem values of 01000000, 00003001, 00000080 and 00009000 respectively for the full VRAM memory fix. Lastly you'll need to add -igfxmetal=1 in the NVRAM boot-args to enable the IGPU acceleration. Link to comment Share on other sites More sharing options...
Allan Posted July 11, 2021 Share Posted July 11, 2021 Hello @apoorv Please do the following: Thanks 😉 Link to comment Share on other sites More sharing options...
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