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Lenovo ThinkPad T420 with UEFI Only

* * * * * 47 votes UEFI ThinkPad T420 Lenovo Clover

Best Answer tluck, 08 October 2013 - 02:47 PM

Lenovo T420 Clover Guide

  • Release v2017.11.05 on GitHub
    • Updated to Clover r4293
    • Revised Utility Scripts using Sleepwatcher and Clover to deal with BT in High Sierra
    • Updated config.plist files:
      - Added Hide Preboot in GUI section
      - Added AHCIPort kext patches by SunKi
      - Set (back) inject GFX by default
    • Added EFICheckDisabler.kext - To not check EFI firmware
    • Updated Lilu/AppleALC to latest rev 1.2.1 - Compiled for both Sierra and High Sierra
    • Updated AppleBacklightInjector kext - All kexts now work injected from ESP
    • Updated ACPIBatteryManager kext to latest rev
    • Updated FakeSMC kext to latest rev

 

Various Releases and Tweaks over Last 6 months

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Overview

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New Installation Steps and Details

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Part 1 - OS Installation

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Part 2 - Post OS Installation and Setup on HD

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Known Issues and Random Tips:

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Notes on Custom Kexts

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General Notes, Fixes, and Features

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Optional: Create a custom SSDT

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3864 replies to this topic

#3861
witjojo

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Wich of the kext i have to use from rehabman?

Or do I have to create it first?

Maybe you can give me your kext?



#3862
tluck

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@witjojo - you can also get the broadcom kexts from the T460 guide (see my sig)



#3863
witjojo

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Many thanks @ verleihnix and tluck. Bluetooth is working now.



#3864
iTarzan

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everything works now - including bay drive. (for 10.13.2 beta need a newer Lilu than in the T420 github - the Beta OS installed on my system last night. - i just built the latest Lilu and it works.

 

there is an option to enable mouse for the Clover GUI. just change Enabled to true in the config.plist (GUI/Mouse section)

 

Great, thank you.
Mouse works, experimented a little bit with speed values, it behaves like a brick, but I can choose OS on boot.

Enabling the external Keyboard would be perfect, but can live without.



#3865
pcace

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Hey there,

 

is there any method to controll the fan speed besides having HWmonitor running all times? The BIOS Controll seems to be pretty stupid and i wish it would be quieter on low load, and would get up to 4500rpm on high load to avoid downcycling a little bit more..

 

any idea?

 

Cheers and Thanks!!!

 

 

EDIT: +1 more question: I just tried to use the provided method (using the ACPIPoller.kext) and realized, that the fan only has 2 modes 3500rpm and 3950rpm... on heavy load its 3950rpm and even on idle its 3500rpm. I followed exactly the installation example in this thread here... so any idea where i could look for the problem? 

Cheers!!!


Edited by pcace, Today, 09:17 AM.







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