Dr_Itachii Posted May 29, 2021 Share Posted May 29, 2021 Hi all. I have a serious problem with my displays, ok my main internal display is broken so for the moment I am using my PC externally (HDMI). 1 - when I start my hack I press Fn+F8 (Dell PC) to transfer the video output to HDMI, it works and MacOS starts from my external monitor from Opencore's picker until it is fully loaded I use it without any worries. I'm not sure if it's a good idea to use the same software as the one I'm using on my hp laptop, but once I unplug the HDMI cable and plug it back in, there's no output signal. My internal and external displays are both black, but on my hp it's not. 2-When I boot without switching the output to HDMI, I can't see what is displayed because the internal screen is damaged, but the backlight at least works and the default boot disk is MacOS, so I know that it launches MacOS, but after long minutes of waiting I connect the HDMI cable but no signal is transmitted (on Windows after loading the graphics driver, the monitor automatically receives the signal). I can see on ioreg that the connector is set to HDMI (00080000) I don't know what to do. Dell Inspiron 5558 i5 5200U 8GB RAM Intel HD 5500/Nvidia GeForce 920MMacBook Pro12,1_ioreg.zipconfig.plist.zip Quote Link to comment Share on other sites More sharing options...
Dr_Itachii Posted May 30, 2021 Author Share Posted May 30, 2021 (edited) 3 hours ago, Hervé said: With Broadwell HD5500 graphics, I would have expected you to inject additional properties to the iGPU device @2 in order to patch the framebuffer and set: FBMem to 9MB (i.e. 0x00900000) StolenMem to 19MB (i.e. 0x01300000) By default, connectors con1 and con2 of BDW layout 0x16260006 are set to DP type (00040000). Where did you set con1 to HDMI type? I could not see that in your config. i changed the DVMT pre-allocated memory to 96MB using modGrubShell like to unblock cfg lock so i dont have to patch the framebuffer. and 00080000 is the correct display con1 i saw in ioregExplorer. i attached my ioreg with my others files. i'm using a MacBookPro12,1 SMBios Edited May 30, 2021 by Dr_Itachii Quote Link to comment Share on other sites More sharing options...
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