utendar Posted October 1, 2021 Share Posted October 1, 2021 Hello all, I followed the latest OpenCore guide for Skylake laptops and upon boot to install from USB, I get an error and the system stops: AppleUSBHostPort::createDevice: failed to create device (0xe00002bc); attached boot log OpenCore 0.7.3 Installing Big Sur Latitude 5480 w/ Intel Core i5-6300U Skylake HD520 Thank you. opencore-2021-10-01-132955.txt.zip Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted October 1, 2021 Moderators Share Posted October 1, 2021 Make sure you have UEFI and AHCI enabled Post EFI folder if it still fails Link to comment Share on other sites More sharing options...
utendar Posted October 1, 2021 Author Share Posted October 1, 2021 Confirmed that both UEFI and AHCI are enabled. Attached EFI folder; thanks for checking. EFI-Utendar.zip Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted October 1, 2021 Moderators Share Posted October 1, 2021 Try disable XhciPortLimit in Config file Link to comment Share on other sites More sharing options...
utendar Posted October 2, 2021 Author Share Posted October 2, 2021 Thank you both! Disabling XhciPortLimit allowed booting and installed Big Sur. Everything seemed to have installed well except trackpad (Alps l2c) and audio (Realtek ALC3246). Any tips on how to proceed? Link to comment Share on other sites More sharing options...
utendar Posted October 2, 2021 Author Share Posted October 2, 2021 Got sound working by following the Post-Install guide "Fixing Audio"; for others that have the same hardware: PciRoot(0x0)/Pci(0x1F,0x3) layout-id <15000000> Last hurdle is the Alps trackpad...I just need basic functions for now, thanks. Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted October 2, 2021 Moderators Share Posted October 2, 2021 add this ssdt SSDT-TPDX.aml.zip Link to comment Share on other sites More sharing options...
utendar Posted October 2, 2021 Author Share Posted October 2, 2021 Added SSDT-TPDX.aml to ACPI directory and to config.plist but the trackpad is still not responsive. Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted October 2, 2021 Moderators Share Posted October 2, 2021 post IORegistryExplorer file Link to comment Share on other sites More sharing options...
utendar Posted October 3, 2021 Author Share Posted October 3, 2021 Here you go, thanks Utendar-IORegExp.ioreg Link to comment Share on other sites More sharing options...
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