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[Guide] Lenovo ThinkPad X240 [OpenCore 0.5.9]

Joined
Jun 20, 2010
Messages
6
Motherboard
Asus Prime Z370-A II
CPU
i7 8700K
Graphics
RX590
Mac
  1. iMac
  2. MacBook Air
  3. MacBook Pro
Mobile Phone
  1. iOS
I took a look at it and checked my BIOS, I have CSM enabled and still experiencing the issue. Tried to disable it to see if it helps, no difference. It's true though, that I have an aftermarket screen 1080p.

Edit: If I close the lid and open it again straight away, I have good image. It must be something small I'm missing.

Edit 2: I reset the BIOS and now it works, thanks jarno83 for the solution.
 
Last edited:
Joined
Sep 17, 2020
Messages
5
Motherboard
Asus Prime B365M-A
CPU
i5 9400F
Graphics
Rx 570
Mac
  1. iMac
  2. MacBook Pro
  3. Mac mini
Mobile Phone
  1. Android
I took a look at it and checked my BIOS, I have CSM enabled and still experiencing the issue. Tried to disable it to see if it helps, no difference. It's true though, that I have an aftermarket screen 1080p.

Edit: If I close the lid and open it again straight away, I have good image. It must be something small I'm missing.

Edit 2: I reset the BIOS and now it works, thanks jarno83 for the solution.
Can you explain what you mean by reset the bios, I'm also having the same issue with garbled screen. Thanks.
 
Joined
Nov 5, 2018
Messages
10
Motherboard
Asrock Deskmini 310
CPU
I7-8700
Graphics
UHD 630
Changelog (13.07.2020)
  • Added missing BrcmFirmwareData.kext to fix Bluetooth problems on DW1560 and DW1820A (tested both cards using my AirPods and they work perfect now)
  • Added new SSDT-DW1820A build from scratch which is more optimized and includes user customizable options like brcmfx-country , brcmfx-driver, pcie-aspm-default and only works under macOS without affecting other OS
  • Changed BlacklistAppleUpdate to No and replaced with run-efi-updater = No NVRAM variable (this should fix the random system variable corrupted message)
  • Added Keyboard Fn+FnLock and Caps lock into SSDT-KBD for ThinkPadAssistant to have GUI feedback for these Buttons.
  • Reverted layout-id from 15 to 28 to use the new patched AppleALC.kext with Docking Station Support and auto switch
  • Added CodecCommander.kext and ALCPlugFix to fix audio problems with static/high pitch noise
  • Fixed Low volume on Speakers compared to Windows, would like some feedback on this.
  • Added Framebuffer patches for MiniDisplayPort and VGA to fix Video Output on these ports
  • Added -rtsx_mimic-linux boot-arg to fix SD Card Detection and initialization after wake from sleep
  • Disabled ResetNVRAM boot option as there is an issue on 2-3 latest lenovo bios versions that after resetting NVRAM the laptop will get bricked and will need to flash stock bios with SPI Programmer to fix it.

Hi there, do you mind giving us your currently BIOS version?

Also your BIOS setting?

Since I've upgraded my X240 to latest official BIOS without whitelist, I couldn't boot into installer with your EFI setup.

Thank you
 
Joined
Oct 15, 2020
Messages
2
Motherboard
Lenovo ThinkPad X240
CPU
i5-4200U
Graphics
HD 4400
Mac
  1. iMac
  2. MacBook
  3. MacBook Pro
Classic Mac
  1. iMac
Mobile Phone
  1. iOS
don't forget to install HeliPort intel wifi client
When I try booting with your EFI, I get the following error:

OCB: System has no boot entries
OC: Failed to show boot menu!
Halting on critical error
 
Joined
Sep 9, 2014
Messages
2
Motherboard
MSI Z270-a
CPU
i3-6100
Graphics
Intel530
Mac
  1. iMac
Mobile Phone
  1. Android
Everything started on x240 except the camera. The second problem is that the laptop does not wake up from sleep mode. Can anyone help with the settings ... x240: i7 4600u
 
Joined
Aug 25, 2017
Messages
11
Motherboard
Lenovo ThinkPad x240 (OpenCore)
CPU
I5-4300U
Graphics
HD4400, 1366x768
Mobile Phone
  1. iOS
When I try booting with your EFI, I get the following error:

OCB: System has no boot entries
OC: Failed to show boot menu!
Halting on critical error
maybe need to reinstall system
 
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