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That's what I've to do because I tested the behaviour with previous USBPorts.kext generated with the laptop standalone. Probe USB keys are mounted but do not appear in the Hackintool list. It seems a formal issue, because USB keys file remain accessible... Three USB 2.0 ports on left side of the dock work Two USB 3.0 ports on rear side of the dock work I forgot docking station doesn't have an HDMI port but only DP. Have to test again and switch monitor connections with another PC/Hackintosh (dual boot W10/Big Sur). The very last test now remains to make a SIM card of an internet provider to be connected to the network as a modem. Do you think it is feasible?

I notice that most troubles have been solved due to precious Jake Lo support for me and AppleCross. Big results. I have to check with the multiple ports of the dock station how the laptop behaves, but I'm very satisfied of the reached status. Everything I'm interested in works now.

Before modding the BIOS I performed further tests browsing various sites. I noticed that Hackintool can generate patches concerning HDMI (Patch/Patch/Advanced) so I tried to setup also the audio configuration in OpenCore config file. So I tried a couple of new Device Properties: PciRoot(0x0)/Pci(0x1F,0x3) - Referred to audio. Initially missing PciRoot(0x0)/Pci(0x2,0x0) - referred to Video - New data and strings with respect to original version of config.plist PciRoot(0x0)/Pci(0x1b,0x0) - referred to ??? - Unuseful since has no data. I guess it can be erased. See attached picture (Config hangs.png) with details With the new scheme, boot hangs at a progress of about 50% I changed the PciRoot(0x0)/Pci(0x2,0x0) restoring the original version and now I have HD video and audio with some issues: video every now and then disappears (black out lasting 5 to 10 seconds) and audio level of the HD monitor cannot be adjusted with the slider. Many progresses have been done! See attached picture (Config ok.png) with details Thank you

HDMI works on a Samsung TV monitor 22" not HD. I can setup resolution and refresh frequency and duplicate or share desktop. Every functionality is allowed. So I think the problem is memory to allocate associated to HD features of main monitor (IPS 27") and its refresh rate (I can arrive up to 165 Hz). I found a thread named [Deprecated] Changing DVMT values in BIOS. Is this you refer to? Is it still valid? I have to boot a WINPE iso and modify directly the BIOS. Can I set up DVMT 192 MB or do I have to limit to 64 MB? If it depends on physical device I cannot set any value. I'm really doubtful...

Finally USB, BT and WiFi troubles have been fixed with the known limitations of non-Apple machines. I can also read the SD card appearing on the desktop as a normal USB key. I'm writing using an USB keyboard, much more comfortable. Some issues remain related to HDMI. I'm using three displays, but the only working are integrated and VGA. I discovered that now Big Sur considers it as a Display Port but it works. Monitor management by MacOS is very poor compared to what you can do in Windows10, but that's another discussion. For me it's ok to use VGA and HD monitor with the laptop display closed, so I'm investigating on how to increase video memory to make both work together. With Hackintool I get some info about VRAM and framebuffer I summarize in the attached pictures. I read max stolen 172 MB and stolen 58 MB. This last should comparable to DVMT I cannot modify in the BIOS. I would like to increase the parameter StolenMemorySize in order to reach the requested value of max stole (say to reach 192 MB). Is it correct if I compute 192-64=128 MB as a new size of StolenMemorySize to input in config.plist? This should correspond to framebuffer.stolenmem at the new value of 134217728 (11024x1024x128). This should replace the current value 00003001. Am I crazy? Hope my brainstorm is clear enough. Any suggestion or correction?

Hi Jake (I apologize having mislead you name), due to your suggestions things have greatly improved, so, first of all, I thank you again. Battery seems ok now and its configuration is allowed. Also statistics seem to work correctly. Monitors: I have activated 2 connections: VGA and HDMI. As I already stated, I can work with VGA monitor (1366x1024) but both integrated and HDMI monitor (4k) are black. With significant delay the desktop appears on the integrated display, optimized for the resolution of the VGA monitor. Sometimes it becomes black and it appears again. Very slow memory with 3 displays. I detached the HD monitor and now things are better but not optimal (blinking screens). I cannot extend desktop to 3 or at least 2 monitors. I see al 3 in prefs pane, but the only working option is monitor duplication. Obviously Air Play is not active. Maybe it is a limitation of GPU chipset. I don't know. Bluetooth: I discovered I could not connect any device so I installed new drivers to simulate Broadcom device (IntelBluetoothFirmware and IntelBluetoothInjector). Now my AirPods connect and work. Associated with WiFi, in any case, BT does not allow Handoff. USB: I noticed I cannot use all the ports, I wanted to setup with Hackintool creating USBmap.kext. I can discover two out the three accessible on the laptop (the SS USB port on the left in not activated). Is it an effect of your SSDT-UIAC.asl file? How can I add this port? See my current configuration. I have to perform some other tests with the docking station that allows much more USB ports to be exploited. Furthermore, can the SD card on the right be made accessible in the same way? bye

Ok Jack, herebelow the situation: WiFi I didn't install anything immediately after the first boot. I studied how to fix the issue and read somewhere to install AirportItlwm.kext and Heliport.app. The app does nothing and if I try to load the kext at the frst boot the system goes into a panic state. The attempt was made saving the kext in the relevant folder EFI/OC/kext and setting up properly the config.plist file. I'll give a try loading in the same way the suggested alternative Itlwm.kext. HDMI I see a second monitor but cannot use it (black 4k display) if I connect the cable to the port. If I boot with the display already connected, I have a lot of laptop display black out with restart from systemn login (as if I had suspended the MBP). Lastly at the end of the boot I have not enough time to type the password and the display remains black so I have to power off the MBP. As required, I send attache the ioreg with connected HDMI cable. VGA appeared on the other monitor for some moments, but this is not important, it isn't really necessary. POWER I cannot do anything by preference pane. Battery charge is declared zero%. I can only set duration for monitor standby and have no icon in the tool bar. @AppleCross I confirm I used the unmodified EFI suggested by Jack Lo in this thread. Obviously after the boot I change SMBIOS parameters and switched to OC 0.6.5 with no troubles. MBP HDMI Rommy.ioreg.zip Excuse my double posting, but it's only to give an update concerning WiFi: with the last driver itlwm.kext I'm able to connect and navigate with my wifi networks 2.4 GHz and 5GHz. This connection is named in preference pan: Ethernet2. Is this correct? A short update concerning monitors: for my last reboot I kept 3 monitors connected: on board, VGA and HDMI. All appear in pref pane. Now I'm using VGA (1024x768). Black screen on the others. I have to investigate furthermore Bye

Hello everybody, I'm a newby to Hackintosh on laptops and on this forum and I've to say I arrived in the right place and have been very lucky to read this thread. In fact, after a couple of days with a lot of troubles trying to setup OC to work with Big Sur on my Dell E5270, a miracle has happened. My Latitude E5270 has the following specifications: Chipset : 6th Generation IntelCore CPU : Intel Core i5-6300U Processor Graphics : Intel Integrated HD Graphics 520 Display : 12" HD 1366x768 RAM : 8GB 2133MHz DDR4 Storage : Crucial MX500 M.2 SSD 500 GB LAN : Ethernet Connection I219-LM Wifi : Intel Corporation Wireless 8260 Audio : Realtek ALC3235 I was not able to reach the USB installer due to a lot of errors related to DSDT and other ACPI tables, so I was thinking to give up. Too complicated enigma to solve for me. But I made a last desperate attempt with the EFI folder suggested by Jake Lo and this is the miracle: Big Sur installed and easily accessible!! Made some refining on SMBIOS and booting options, but the system now is at an acceptable starting point: What works: Ethernet Bluetooth Audio Keyboard Trackpad Monitor Camera What doesn't work Bluetooth mouse (maybe incompatible device Tecknet I used with W10) Power (Have a lot of monitor standby disconnections during usage, battery not recognized) WiFi (not configurable at all, in spite the button is on in the status bar) Video output (VGA and HDMI ports not working or bad working) In any case I wish to thank a lot Jake Lo, a real top guru. In the meantime I'll try to fix the remaining troubles, but further tips and tricks are welcome bye