imjmsony

Hi Jake, All the switchable graphic options have already been disabled in BIOS before. Below is some additional information, in case it is may helpful for you. - My Big Sur is currently running from an external USB SSD. - I have another High Sierra installed on the internal NVMe SSD, which runs normally with Clover bootloader. - I have tried to build an alternative boot loader using the latest version of Clover (r5127), but it even halts from the beginning stage of the boot process (End Randomseed +++ problem). If you need any other information, please tell me. Thank you.

Hi everyone, I just have installed Big Sur success on my Dell Precision 7510 with OpenCore 0.6.3. Almost the critical components worked, except the internal screen. Symptom: - Startup the machine with no external screen connected --> macOS boot successfully, but no Apple boot logo, blank internal screen. - Connect external screen via HDMI/mDP --> image displayed only on the external screen. - Startup the machine with an external screen connected --> macOS boot successfully, no Apple logo, blank internal screen. Only the external screen is worked. - Go to Setting/Displays --> both screens have already detected. - Try to adjust brightness --> the internal screen's backlight responding correctly, but still blank screen. - I have tried all the following but no luck: + Close/open lid --> macOS still can detected and switching between single/dual screen mode, but internal screen still blank. + Sleep then Wake up --> internal screen still blank. + Inject custom EDID (using Hackintool) --> internal screen still blank. My laptop configuration: - Intel Core i7 6820HQ - 16GB of RAM - 4K IGZO screen - RX460 MXM GPU installed ( I buy it from eBay, running perfectly with High Sierra and Mojave before). - All Kexts are updated to the latest version. My current OC folder setting and the latest startup log file are attached below. I appreciate anyone helps me to overcome this issue and get back the internal screen worked again. Thank you. EFI-OC.zip OC Startup log.zip