lamatta17 Posted August 20, 2021 Share Posted August 20, 2021 Hello Jake Lo, I have now purchased a Precision 5510. This has a UHD display. With a monitor connected to HDMI, I was able to use your EFI at: https://osxlatitude.com/forums/topic/15235-precision-5510-opencore-mojave-catalina-big-sur/?tab=comments#comment-107493 Install Big Sur. I am thrilled how well everything works. I'm going to add a DW1830. Unfortunately, I can not get the int. 4k display to run. Can you give me a tip? Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted August 20, 2021 Moderators Share Posted August 20, 2021 try patching EDID Link to comment Share on other sites More sharing options...
lamatta17 Posted August 21, 2021 Author Share Posted August 21, 2021 how? per kext in EFI? or per Vendordirectory in Library/Displays...? or per Vendordirectory in System/Library/Displays...? i found only a script for external Monitors. Link to comment Share on other sites More sharing options...
Administrators Hervé Posted August 21, 2021 Administrators Share Posted August 21, 2021 You may try and extract your screen's EDID from Windows/Linux, then inject it into macOS through properties passed through your boot loader's config. https://github.com/acidanthera/WhateverGreen/blob/master/Manual/FAQ.IntelHD.en.md Link to comment Share on other sites More sharing options...
lamatta17 Posted August 23, 2021 Author Share Posted August 23, 2021 Thanks for the tips, but I have zero idea how to do this. I installed Windows 10 and used Monifo to create the information for the internal display. How can I now with the won infos the config.plist happy? I would be grateful for any further help. Moninfo.zip Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted August 23, 2021 Moderators Share Posted August 23, 2021 Under DeviceProperties/PciRoot(0x0)/Pci(0x2,0x0), add a new value data AAPL00,override-no-connect = (data) 00FFFFFF FFFFFF00 4D103E14 00000000 28190104 A5231378 0EC391A8 5434B925 0C4D5300 00000101 01010101 01010101 01010101 01014DD0 00A0F070 3E803020 35005AC2 10000018 00000000 00000000 00000000 00000000 00000000 00FE0037 50485054 824C5131 35364431 00000000 00024103 28001200 000B010A 20200077 You might want to edit on an USB and boot from that incase it doesn't work Link to comment Share on other sites More sharing options...
Administrators Hervé Posted August 23, 2021 Administrators Share Posted August 23, 2021 Note that EDID's hexadecimal data must be entered without any spaces. They'll just automatically pop out afterwards. Link to comment Share on other sites More sharing options...
lamatta17 Posted August 24, 2021 Author Share Posted August 24, 2021 Thanks for the support. I had already tried inserting the hex string. Unfortunately without success. I made the entry and of course nvreset (several times). When I start without ext. monitor, now the int. screen stays on and shows the text outputs. After some time it darkens, but does not switch to graphics mode. If I plug in the ext. monitor, the int. screen switches off and the login screen appears on the ext. display. So it has already changed a bit. Desktop.zip Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted August 24, 2021 Moderators Share Posted August 24, 2021 Ok, it that doesn't work, you may want change DVMT to 128MB using EFI shell Link to comment Share on other sites More sharing options...
lamatta17 Posted August 24, 2021 Author Share Posted August 24, 2021 dxdiag shows 128Mb. i copied the directory /System/Library/Displays to the directory /Library/Displays. In /Library/Displays/Contents/Resources/Overrides/DisplayVendorID-4d10 I copied the attached file. Now two monitors are displayed, but the int. one remains dark. The backlight on the int. can even be controlled. Also with the keys. DisplayVendorID-4d10.zip I also tried to create an appropriate configuration with the Hackintool. Unfortunately without success is there another way to see how much RAM has been reserved for DVMT? Link to comment Share on other sites More sharing options...
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