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[Solved] E7270: experimenting with OpenCore


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I was starting to test OC on my e7270 but I found this thread, I haven't the touch screen so I removed all the kext for the screen and putted for the SD Card Reader the kext used by Jake Lo in the Clover confuguration..

The configuration seems stable and fully working.

After some tests I found only some difference from my clover configuration,

1. The touchpad is too fast 

2. The SD Card reader detect the card but request to format it, trying to format it, I get an error that say that it failed to write the last block of memory


(The docking station is also working)


The last thing is that with my old clover configuration I've setted a configuration that adjust on the keyboard with Voodoo ps2 the position of command key and alt key (now I inverted it form Mac Os settings). it's possible to integrate the patch of clover config in OC?

I attach my clover, my OC folder and the kext for the SD Card Reader

I'll try with my limited ability to solve these problems and I'll write here what I have done

CLOVER.zip OpenCore.zip Sinetek-rtsx.kext.zip

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You can update Sinetek-rtsx with that latest 



Where in the Clover Config file did you reverse the PS2 command and alt key?

You can reverse it in Keyboard preference / Modifier Keys or you can modified  the info.plist in VoodooPS2Controller/Contents/Plugins/VoodooPS2Keyboard

Under IOKitPersonalities/ApplePS2Keyboard/Default/Swap Command and Option to No or Yes

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Ok I made some changes, now all it's working except the sleep.

When I close the laptop after some seconds there is a kernal panic and the laptop instantly shut down.


With this command I stopped the problem but not solved (I tried to put HibernationFixup.kext but nothing).

sudo pmset standby 0


The other things now work, I attach the OpenCore Folder that I'm using


Thanks for your big job on this laptop Jake Lo


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Jake Lo:

I have just tried to downgrade to 2.2 having no results. So I don't think that is a kext that create the problem. I will investigate more on this because I'm really interested to use opencore as y bootloader, Just now I'm using it. For other updates I'll publish new news here.


Report of the panic

Sleep Wake failure in EFI

Failure code:: 0xffffffff 0x0000001f

Please IGNORE the below stackshot

Date/Time:        2020-07-25 18:33:30 +0200
OS Version:       ??? ??? (Build ???)
Architecture:     x86_64
Report Version:   29

Data Source:      Stackshots
Shared Cache:     0x4fbc000 0FFAAF0D-8DA4-344B-99E6-D02F36857932

Event:            Sleep Wake Failure
Duration:         0.00s
Steps:            1

Time Awake Since Boot: 20s

Process:          swd [283]
Architecture:     x86_64
Footprint:        388 KB
Start time:       2020-07-25 18:33:30 +0200
End time:         2020-07-25 18:33:30 +0200
Num samples:      1 (1)

  Thread 0x784    1 sample (1)    priority 4 (base 4)
  <thread QoS background (requested background), thread darwinbg, process darwinbg, IO tier 2>
  1  start + 1 (libdyld.dylib + 109769) [0x7fff6bfdccc9] 1
    1  ??? [0x104cfe454] 1
      1  ??? [0x104cfe1dd] 1
        1  __stack_snapshot_with_config + 10 (libsystem_kernel.dylib + 135862) [0x7fff6c13e2b6] 1
         *1  ??? [0xffffff80002c1206] 1
           *1  ??? [0xffffff8000984c37] 1
             *1  ??? [0xffffff800089d7c1] 1
               *1  ??? [0xffffff80002e49e7] (running) 1

  Binary Images:
        0x7fff6bfc2000 -     0x7fff6bff8fff  libdyld.dylib (750.6)               <24C41E8B-6B33-30C7-94C9-02D2BD051D66>  /usr/lib/system/libdyld.dylib
        0x7fff6c11d000 -     0x7fff6c149fff  libsystem_kernel.dylib (6153.141.1) <2B6311E6-6240-3EF7-8C87-475B66F7452C>  /usr/lib/system/libsystem_kernel.dylib
Model: CBX3263,8201, BootROM , 2 processors, 2,5 GHz, 12 GB, SMC 2.36f98
Graphics: Intel HD Graphics 520, Intel HD Graphics 520, spdisplays_builtin
Memory Module: 
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x19), Broadcom BCM43xx 1.0 ( AirPortDriverBrcmNIC-1615.1)
Bluetooth: Version 7.0.6f7, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
USB Device: USB 3.0 Bus
USB Device: DW5811e Snapdragon™ X7 LTE
USB Device: BCM20702A0
USB Device: 5880
USB Device: Integrated_Webcam_HD
USB Device: USB Receiver
Thunderbolt Bus: 


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make sure you set your internal usb devices as internal. you can create a usb kext with hackintool.


USB Device: DW5811e Snapdragon™ X7 LTE

USB Device: BCM20702A0

USB Device: 5880 (if it is an internal usb device)

USB Device: Integrated_Webcam_HD

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Ok, more about this...


First, here there are some information about my configuration:

I have a dual boot :

  1. Grub with Kubuntu 20.04 installed
  2. macOS With OpenCore

To boot macOS with Clover, I use my macOS USB installer.


The problem happens only when I try to boot macOS with OpenCore. I started to think that the problem was also in Clover, so I booted macOS with Clover, but for simplicity I've started it in this way:

OpenCore -> Clover (USB) -> macOS

Strangely booting macOS this way causes the same problem as with OpenCore


After I tried to boot directly Clover from the boot menu

Clover (USB) -> macOS

The computer then works perfectly.


So this confuses me a lot. Why booting Clover through OpenCore, I have the same issue?

Can this information be useful to solve the problem or is a normal behaviour?

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