odemolay Posted March 7, 2021 Share Posted March 7, 2021 hello, i'm trying to help a friend with a motherboard known to have some issue with HDMI, he is plug in hdmi indeed. would you help us please is config is coffelake : Asus H310M-A, LGA 1151, I3-8100 3,6GHz coffe lake, next bootpiker opencore 066, he have no more video : and this is his EFI 066 https://u.pcloud.link/publink/show?code=kZYlyfXZhG37YJ6xgEmQUhh5bATzfR9hkYL7 thank you Link to comment Share on other sites More sharing options...
miliuco Posted March 7, 2021 Share Posted March 7, 2021 2 hours ago, odemolay said: hello, i'm trying to help a friend with a motherboard known to have some issue with HDMI, he is plug in hdmi indeed. would you help us please is config is coffelake : Asus H310M-A, LGA 1151, I3-8100 3,6GHz coffe lake, next bootpiker opencore 066, he have no more video... Dear friend, I spent more than 3 weeks trying to get video output on a friend's PC with the same motherboard and CPU as you but I did not succeed, al last he bought a dGPU. I hope someone more expert than me can help you. Link to comment Share on other sites More sharing options...
odemolay Posted March 8, 2021 Author Share Posted March 8, 2021 (edited) thank you very much for your advice. we are going to change those setting. and maybe try to understand (not sure to be honest at this point) he will use only one HDMI. have a nice day Edited March 8, 2021 by odemolay Link to comment Share on other sites More sharing options...
miliuco Posted March 8, 2021 Share Posted March 8, 2021 2 hours ago, Hervé said: So your iGPU property injection should look like: AAPL,ig-platform-id 07009B3E DATA enable-hdmi20 01000000 DATA framebuffer-patch-enable 01000000 DATA framebuffer-stolenmem 00003001 DATA framebuffer-fbmem 00009000 DATA framebuffer-con0-enable 01000000 DATA framebuffer-con0-type 00080000 DATA framebuffer-con1-enable 01000000 DATA framebuffer-con1-type 00080000 DATA framebuffer-con2-enable 01000000 DATA framebuffer-con2-type 00080000 DATA Clear and detailed instructions that have left me speechless. Congratulations for this text. Link to comment Share on other sites More sharing options...
odemolay Posted March 8, 2021 Author Share Posted March 8, 2021 (edited) 2 hours ago, Hervé said: get rid of device-id property; iGPU id 3E91 of i3-8100 CPU is natively supported. what do you mean exactly at the bottom you write 2 hours ago, Hervé said: With layout 3E9B0007, you should also use SMBIOS iMac19,2 rather than iMac19,1 which is usually associated with layout 3E980003. sorry i'm certainly stupide to ask, but it's not clear for me. I just noticed that you took that line out, was that correct? device-id 9B3E0000 DATA is it what i was supposed to understand by getride device-id ? Edited March 8, 2021 by odemolay Link to comment Share on other sites More sharing options...
odemolay Posted March 8, 2021 Author Share Posted March 8, 2021 thank you for the explanation, my question was indeed badly put. I understand your answer. and the meaning behind ... what was not clear to me is the proximity of the terms: device-id property/ id 3E91 / layout 3E9B0007 /layout-id and the initial presence of device-id 9B3E0000 DATA while it was written get rid off device id. I'll look at the definitions of all that words. to learn. have a good day and thank you for your help. Link to comment Share on other sites More sharing options...
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