lametta17

Thunderbolt is enabled in the BIOS. Or how was the question meant?

Thanks for your answer. Here is the file. Mac 5510.ioreg.zip

Specification: BIOS 1.17.0 Intel Core i7-6820HQ Quad Core 2.70GHz, 3.60GHz Turbo, 8MB 45W 2 DIMM slots: up to 32GB DDR4 2133MHz NVIDIA Quadro M1000M with 2GB GDDR5 dedicated memory Intel® Pro Graphics 530 & P530 15.6" UltraSharpTM UHD IPS (3840x2160) Wide I have successfully installed Big Sur. 11.6 USB-C works (hotplug) i read about a Thunderbolt - "Full DSDT patches OpenCore". Is there also a solution for the 5510?

Now it has finally worked. see attachment. Thank you very much for your active support. config.plist.zip

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.

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?

Do you have a link (rehabman patch for p530)? Thanks for your support. i have paste your data in my config.plist nvram reset Only ext. Monitor works. config.plist.zip

Made a few more changes. Can anyone give me a tip? Downloads.zip

Dell Precision 5510 with 4k built-in screen Specification: BIOS 1.17.0 Intel Core i7-6820HQ Quad Core 2.70GHz, 3.60GHz Turbo, 8MB 45W 2 DIMM slots: up to 32GB DDR4 2133MHz NVIDIA Quadro M1000M with 2GB GDDR5 dedicated memory Intel® Pro Graphics 530 & P530 15.6" UltraSharpTM UHD IPS (3840x2160) Wide 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.zip