Lametta17 Posted August 27, 2021 Share Posted August 27, 2021 I have successfully installed Big Sur. https://osxlatitude.com/forums/topic/15235-precision-5510-opencore-mojave-catalina-big-sur/?tab=comments#comment-107493 Unfortunately, the int. 4k display remains black. With an ext. monitor everything runs fine. Do you have a tip for me? config.plist.zip Moninfo.zip Link to comment https://www.insanelymac.com/forum/topic/348703-dell-precision-5510-unable-to-use-4k-built-in-screen-with-opencore/ Share on other sites More sharing options...
Lametta17 Posted August 27, 2021 Author Share Posted August 27, 2021 (edited) Based on the last config.plist, I tested in the order you specified. from point 3 I get a picture on the int. display. Yay. unfortunately the following things don't work now: the mouse is choppy. everything has become slower the PC freezes from time to time. the ext. monitor is no longer controlled. the brightness can no longer be controlled I also did point 4, but it didn't change anything. Thanks first for the great support. have already thought I have to sell him again. config.plist Edited August 27, 2021 by Lametta17 Link to comment https://www.insanelymac.com/forum/topic/348703-dell-precision-5510-unable-to-use-4k-built-in-screen-with-opencore/#findComment-2765320 Share on other sites More sharing options...
Lametta17 Posted August 28, 2021 Author Share Posted August 28, 2021 OK, I went through everything again. I have worked through your points again. I do not get it right. Only the int. display is working and the system is not running smoothly. Please again for support. config.plist Link to comment https://www.insanelymac.com/forum/topic/348703-dell-precision-5510-unable-to-use-4k-built-in-screen-with-opencore/#findComment-2765357 Share on other sites More sharing options...
Lametta17 Posted August 30, 2021 Author Share Posted August 30, 2021 OK, I went through everything again and did all steps again with the downloaded config.plist. Unfortunately with the same result. What is wrong? (by the way. how can I make a donate for your work). Link to comment https://www.insanelymac.com/forum/topic/348703-dell-precision-5510-unable-to-use-4k-built-in-screen-with-opencore/#findComment-2765410 Share on other sites More sharing options...
shl628 Posted August 31, 2021 Share Posted August 31, 2021 Add -igfxmlr boot arg to Config.plist and try rebooting. Link to comment https://www.insanelymac.com/forum/topic/348703-dell-precision-5510-unable-to-use-4k-built-in-screen-with-opencore/#findComment-2765456 Share on other sites More sharing options...
Lametta17 Posted August 31, 2021 Author Share Posted August 31, 2021 @shl628 Thanks for your help, but don't work. Link to comment https://www.insanelymac.com/forum/topic/348703-dell-precision-5510-unable-to-use-4k-built-in-screen-with-opencore/#findComment-2765514 Share on other sites More sharing options...
Lametta17 Posted September 1, 2021 Author Share Posted September 1, 2021 In the meantime I have tried all AAPL,ig-platform-id's for this CPU. With and without: AAPL00,overwrite-no-connect string. SMBIOS MBP 13,3 / MBP 13,1 framebuffer-fbmem framebuffer-stolenmem boot arg igfxonln=1 / -igfxmlr / agdpmod=pikera / gdpmod=vit9696 Is there still a chance to get the 4k monitor running? Link to comment https://www.insanelymac.com/forum/topic/348703-dell-precision-5510-unable-to-use-4k-built-in-screen-with-opencore/#findComment-2765559 Share on other sites More sharing options...
Lametta17 Posted September 8, 2021 Author Share Posted September 8, 2021 I give up. have tried (all) possibilities. i donate 50$ for the following configuration: 4k int. works HDMI ext. works Based on OC 070 or newer Maybe someone can remotely achieve this goal. Link to comment https://www.insanelymac.com/forum/topic/348703-dell-precision-5510-unable-to-use-4k-built-in-screen-with-opencore/#findComment-2765902 Share on other sites More sharing options...
Lametta17 Posted September 9, 2021 Author Share Posted September 9, 2021 I had already set DVMT to 0x4. Now it has finally worked. see attachment. Thank you very much for your active support. config.plist.zip 1 Link to comment https://www.insanelymac.com/forum/topic/348703-dell-precision-5510-unable-to-use-4k-built-in-screen-with-opencore/#findComment-2765964 Share on other sites More sharing options...
Lametta17 Posted September 13, 2021 Author Share Posted September 13, 2021 Is there still a possibility to use Thunderbolt? Link to comment https://www.insanelymac.com/forum/topic/348703-dell-precision-5510-unable-to-use-4k-built-in-screen-with-opencore/#findComment-2766293 Share on other sites More sharing options...
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