Lenovo ThinkPad T420 with UEFI Only

[ag6952563]

i wonder if there is a problem with FakeSMC. verleihnix had problem a while back and went back to Rehabmans build RehabMan-FakeSMC-2013-0706.zip

 

here is rehabman's site https://code.google.com/p/os-x-fake-smc-kozlek/downloads/list

tuck-

I tried this version of FakeSMC but get the same problems, if I use a vanilla AppleACPIPlatform (v1.7 or v1.8) I get SMC errors...

So, I am back to the custom version.

Thanks,

AJ

[tluck]

@AJ - ErmaC has provided a patch to 10.8.5 v1.8 AppleACPIPlatform.kext 

           hit download button and get AppleACPIPlatform.12F45.zip

 

 

Note: I am writing this from Safari 7 on 10.9 GM - thanks Tetonne! - everything works great. 10.9 is should be a fairly easy upgrade. I was able to patch AppleHDA (including manwe150's input fix).

[maropr]

 

Note: I am writing this from Safari 7 on 10.9 GM - thanks Tetonne! - everything works great. 10.9 is should be a fairly easy upgrade. I was able to patch AppleHDA (including manwe150's input fix).

 

Here you could put AppleHDA.kext to 10.9 Mevericks ??

 

Thanks

[ag6952563]

@AJ - ErmaC has provided a patch to 10.8.5 v1.8 AppleACPIPlatform.kext 

           hit download button and get AppleACPIPlatform.12F45.zip

 

 

Note: I am writing this from Safari 7 on 10.9 GM - thanks Tetonne! - everything works great. 10.9 is should be a fairly easy upgrade. I was able to patch AppleHDA (including manwe150's input fix).

Thanks tluck, will download and install it.

10.9! great. What process did you follow to install? Did  you upgrade your 10.8 or did a fresh install?

Using clover and the same kexts?

[tluck]

well I did an upgrade - installed over my 10.8.5 .... will post a 10.9 bundle shortly.  

 

creating the installer was the hardest part actually!

[tluck]

Lenovo T420 Clover Guide

• Release on GitHub
  • Updated to Clover r5142
  • OpenCore (0.7.6) as an alternative boot manager
     
• Recent highlights:
  • Added older versions of IntelMausiEthernet for 10.12, 10.13, 10.14, 10.15
  • Force DualLink for the 1600x900 configs
  • Update Theme (icons and boot chime option)
  • Use WhateverGreen.kext for GFX patching and properties by default
  • VoodooPS2Controller.kext  - with new SSDT option for custom key map
  • AppleALC.kext - merged properties for T420 (changed Layout 12 to 14)
  • Update T420s with SSDT for PS2K device
  • config.plist changes:
    • Revised to common config.plist for simplicity
    • Changed config.plist file to use audio layout id 14 (or 13 for dock) 
    • Update config.plist files to set slide=0 by default
    • Removed ACPI patching by Clover (except Fix_Regions) since patching is already in provided in the DSDT
    • Provide alternate config.plist files and DSDT files for testing glitchy 1600x900 LCD
      • 3 alternate configs: EDID-2e2, EDID-2e3, EDID-366  - 60 and 50 Hz modes

 

T420 Clover Guide and Steps

Overview

The zip file is a complete ESP/kext pack for the Lenovo T420 using Clover on macOS. This file set and method works for Sierra and High Sierra. 

• Full Clover ESP file set - config.plist + required custom kexts + custom ACPI files (DSDT/SSDT)
• The actual zip bundle releases are posted on GitHub.com

 

* For Mojave (10.14.x) and Catalina (10.15.x) - use dosdude1 installer method + this ESP bundle

• Apple removed support of HD 3000 Graphics 
• see the "dosdude1" method to create an installer for unsupported Macs: http://dosdude1.com/software.html
• combine the methods outlined here with dosdude1 method (add Clover to EFI)
• tested on: 10.12.6, 10.13.5, 10.14.x and 10.15.x

 

Non-maintained Mountain Lion Kext Bundles for 10.8.4 are in post #241 and 10.8.5 in post #397

Also for L420 Guide, see the one by kosakgroove
 

Why Clover vs Chameleon?

• Native UEFI boot support for macOS (and Windows) on GPT disks.
• Native Apple macOS Installers and App Store Updates.
• Supports Recovery HD for system recovery, iMessage, Find My Mac, etc.
• Dynamic DSDT and Kext patching.
   

Caveat: My system is a T420 with 1600x900 LCD and dedicated Intel HD 3000 Graphics Only. This zip contains what is working for me on this specific model. The related models - such as T420s, T420i, T520 and W520 family - may work as is or need some changes to config.plist and/or the DSDT. In the DSDT source (.dsl) file, the changes are indicated by notes and comments. If your HW is the same as mine, the included DSDT and configuration files may need to be retrofitted to work for your system.

The guide has 2 parts or phases:

1. How to create a USB installer to install macOS,
   and
2. How to complete the OS installation to run macOS
    

BIOS settings

• Recommended is BIOS v1.46 (and stay on 1.46 if you want use a modded bios - but there are later mods now)
• Recommended: reset to defaults. Most defaults settings will work - but check these settings:
• Set Config / Serial ATA (SATA) / SATA = AHCI
• Set Security / Memory Protection / Execution Prevention = Enabled
• Disable Discrete Nvidia/Optimus (use integrated HD 3000 only - unless you really know what you are doing!)
• Note: The custom DSDT is based off BIOS v1.46 (flashed with whitelist mod or original)

Terms:

• GPT = GUID Partition Table
• MBR = Master Boot Record
• ESP = ESP = EFI System Partition, the ESP is created automatically as the first (hidden) partition by the Disk Utility when the GPT option is selected for partitioning a disk.

 

Part 1 - OS Installation

These steps and procedure is for a complete new fresh installation using an USB Installer. If you are upgrading to High Sierra from an older working version of macOS (say El Capitan or Sierra is on your HD downloaded from the App Store), skip down to Part 2, Step 3 to update your ESP. You must replace or merge in the changes from the EFI/CLOVER files to your HD ESP before you perform the upgrade.

 

1.1 Overview and Downloads

• Download and expand (extract) the zip file contents from here:
  GitHub Lenovo T420 Clover Latest Release.
  • This same file set will be installed on the USB and the HD for UEFI boot.
• Download macOS from the App Store - they are freely available.
  • One can build a macOS USB installer with the standard macOS installer app downloaded from the "App Store".
• Install macOS to a GPT formatted disk using the standard Install macOS.app downloaded from the Apple Store.

 

1.2 Create a standard macOS USB installer

•  Partition an 8GB (or larger) USB formatted with GUID Partition Table (GPT)
  • use the Partition Options... menu to change from MBR to GPT
  • Name the partition - USB - the install process will rename it, but it matches the script below.
  • Use format: Mac OS Extended (Journaled) (formerly OS X Extended)
  • Note: if you have a larger USB (say 16GB) you can split into 2 8GB partitions, so you can have 10.13 and 10.12 installers on the same USB key
     
• Run this command to copy the bits to the USB key:

• sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/USB --applicationpath /Applications/Install\ macOS\ High\ Sierra.app –nointeraction

   

Note: if using an older version of macOS, replace with the corresponding app name. 

 

1.3 Put Clover installation on USB

• Install Clover on the USB

  sudo mkdir /Volumes/ESP-USB
  sudo mount -t msdos /dev/disk1s1 /Volumes/ESP-USB
  cp -a ~/Downloads/Lenovo-T420-CloverYYYY.MM.DD/EFI/ /Volumes/ESP-USB/EFI

  • Manually mount the ESP of the USB (there is script - espmount.bash - that you can use later in the Utilities folder as an option)
  • If not done already, expand the downloaded Zip to ~/Downloads/LenovoT420-Clover-YYYY.MM.DD (this file set is the Zip)
  • Copy the EFI directory to the ESP directory of the USB
    For example, assuming the USB is disk1:
    Note: run "diskutil list" on the command line to find your USB and HD disk devices

1.4 Boot Clover from USB Installer and select Install macOS

• Install the OS on your GPT disk on the macOS partition.
• Make sure the drive is formatted using:
  • Scheme: GUID Partition Map (GPT)
  • Partition Name: macOS
  • Format: APFS - use macOS Extended (Journaled) for Sierra
• Dual BOOT tip:
  • If you plan to dual boot Windows from the same HD - DO NOT make the 2nd partition NTFS or ExFAT with the Disk Utility app.
  • For now make the all partitions "APFS" or "Mac OS Extended (Journaled)"
  • Size the 2 partitions appropriately - later you will delete and reformat the 2nd unused partition space for Windows

1.5 GUI Install of macOS
Click through the install menus and wait for the installation to fully complete - on a spinning disk takes about 30-45 minutes.

• Follow these Notes and Tips:
  • When the installer screens shows: "To pair a Bluetooth keyboard, turn it on and wait for your computer to connect to it.”
  • Hit the Space Bar to get past this step.
  • When installer seems to hang at: "About a second remaining”
  • Don’t Panic, this "second" may take about 10 minutes or more to finish.
  • Just wait for the installer to reboot the computer and continue the installation.
  • The whole install process takes about 1 hour to complete.
• On the first boot from the HD when asked:
  •  "How Do You Connect?”
  • Select: “My computer does not connect to the Internet”
  • You can set up the network later after installation of the NIC driver kext - but it may already be working.
  • The stock Intel WiFi will not work. Period.  

 

Part 2 - Post OS Installation and Setup on HD/SSD

 

2.1 Boot Clover from USB 
On startup, hit F12 and select USB boot - but now in Clover select the newly installed disk/partition to start macOS.

Note: You may see 3 Volumes instead of the expected 2 on the HD - macOS + Recovery HD - make sure you pick the volume that is NOT labelled Recovery HD. See step 3 below to remove the logical volume eliminates the confusion.

2.2 Complete the installation steps - boot up and login

• Boot up macOS with Clover injecting the custom kexts from the USB. 
• Login and start a terminal session.

2.3 Install Clover on the Boot Drive ESP

• Download (or transfer) the same Zip files to the HD. (See below for details)
  • In general, the provided kexts do not require any modification.
• Backlight should work if using WhaterEvergreen kext. 
   

Details for Installing Clover Bundle on the Boot Drive ESP

1. Now make the ESP contents on the boot drive exactly like the ESP used to setup the USB installer above.
2. Manually mount the ESP of your HD on /Volumes/ESP. (See first 2 commands below.)
3. Replace the ESP installed by Clover in the previous step -- means you copy/replace these 2 directories /Volume/ESP/EFI/CLOVER and BOOT with the ones from the Zip file.
4. Just as you did for the USB, the config.plist is renamed from the one that matched your LCD.
5. Mount and install the ESP bits to your HD/SSD (disk0) by following the same procedure as for the USB.

• Note: If you previously installed Windows, be careful to not lose the EFI/Microsoft contents. 
• Note: The Clover config.plist default volume name (the volume to boot automatically) is set to "macOS" - meaning your new volume is assumed to be named "macOS". If you use a different name - like "Macintosh HD" change the volume name or edit the name in config.plist to match.

• sudo mkdir /Volumes/ESP
  sudo mount -t msdos /dev/disk0s1 /Volumes/ESP
  cp -a ~/Downloads/Lenovo-T420-Clover-YYYY.MM.DD/EFI/ /Volumes/ESP/EFI

   

2.4 For 1600x900 LCD - Recommended Option: Install (copy) the DisplayVendorID-* directories 

Many have GFX problems (glitches/lines) with 1600x900, so there are 3 configurations that inject an alternate EDID and set DualLink=1. Gfx freezes and glitches can be minimized by these alternate configs. If the default doesnt help - try the other EDID-* configs ( 2e2 or 2e3) which is the same as config.plist) first - copy one to replace the default config.plist. Then, these matching display options can help remove glitches with display speed/size options. The override files also provide a more natural color correction and gamma curves as well as more screen sizes for select Lenovo LCD models. These files are included in the Zip file and should be copied (via sudo) to /System/Library/Displays/Contents/Resources/Overrides.

NOTE: For Catalina you may need to mount / (root) as read/write. SIP should already be disabled so you can write to the destination.

 

• Note: For Yosemite or earlier versions, these files go in /System/Library/Displays/Overrides

• sudo cp -a ~/Downloads/Lenovo-T420-Clover-YYYY.MM.DD/\:System\:Library\:Displays\:Contents\:Resources\:Overrides/DisplayVendorID-* /System/Library/Displays/Contents/Resources/Overrides/

• Note: for Catalina you need to make / (root) read/write  - to do this step, issue this command before the above command:

  sudo mount -uw / 

2.5 Remove the USB and Reboot to load Clover from the HD

Notes: For this first boot, hit the spacebar on your boot selection (macOS) and use verbose mode.
See below for other tools and scripts for to help with sleep/wake issues.

 

Enjoy your Hackintosh!

 

Optional Steps (no longer required)

1) Install the all custom kexts to your OS /Library/Extensions folder

Note: These days, Clover can "Inject" all the custom kexts from the ESP - so you no longer have to copy/install them into your system OS. However, if desired install the custom kexts from the Zip kexts directory to the /Library/Extensions directory by running:

• cd ~/Downloads/Lenovo-T420-Clover-YYYY.MM.DD/EFI/CLOVER/kexts/
  sudo ./_kext-install.command

   

2) Ethernet Device Installation

If you do not already have an ethernet device created as en0 - you can check the System Preferences/Network tool - this step loads the ethernet kext and resets network device order to have ethernet as en0. Seems to help with AppStore and iMessage etc.

• Note: macOS may already have configured the ethernet, so this step may be unnecessary but it will not hurt anything either for a fresh installation. Run this set of commands:

• sudo kextload /Library/Extensions/IntelMausiEthernet.kext
  sleep 10
  sudo rm   /Library/Preferences/SystemConfiguration/NetworkInterfaces.plist

   

3) Optional: Create a customer injector.The included/pre-made AppleBackLightInjector kext may work "as is" if you have a common Lenovo LCD. This kext gives full uniform brightness range for the LCD.  You can create a custom Backlight Injector kext for your LCD Panel if needed. This script will update the kext in the ../../EFI/CLOVER/kexts/Other directory - which is the unzipped package location.  This AppleBacklightInjector kext replaces the (obsolete) IntelBacklight.kext and the kext install script will remove the old one if on 10.12.4 or later. You may manually remove that kext if present.  To create this custom kext, run this procedure script:

 

• cd ~/Downloads/Lenovo-T420-CloverYYYY.MM.DD/Utilities/Create_AppleBacklightInjector_kext/
  sudo ./createAppleBacklightInjector.command

   

 

Post Installation - Known Issues and Random Tips:
 

• GFX distortion/stretching: See Step 2.4 - sometimes DualLink is not set right for 1600x900 LCD. 
• WIFI: The stock Intel WiFi will not work. The common approach is use a modded BIOS 1.46 (or later) and replace the WiFi with a Broadcom or Atheros chip. 
• Bluetooth: Enable (turn on and leave on) Bluetooth so the green light is showing on the LCD bezel (do from Windows or Ubuntu).
  • Also make sure the side switch is set to green too!
•  

• "Black" Screen - hit "Pause" (or FN Home) key to increase LCD brightness
  • sometimes the saved value in the nvram is out of sync or zero so LCD seems to be off.
• Audio: When using external headphones or speakers, may need to plug and unplug 1 or 2 times for recognition.

• Suggested settings if you don't want or use hibernation:

• sudo pmset -a hibernatemode 0
  rm /var/vm/sleepimage

• Hibernation - Use OsxAptioFix2Drv-64.efi instead of OsxAptioFixDrv-64.efi UEFI driver for restart from hibernation. (Have not tested this in a long time). For hibernation, then set hibernate mode to 7 (mode 7 is like mode 3 but without encryption) - may need to manually edit this value into the plist file now. Note: Booting up from the hibernated image may have jumbled or blank LCD until you do a sleep/wake cycle to reset the LCD.

• sudo pmset -a hibernatemode 7

• If you still have HFS+ formatted part vs APFS, Clover may present 2 options for main OS partition if using Logical Volume vs Standard Volume. You can revert the logical volume, so Clover will not get confused and present duplicate options.
  • Just "revert" using:

  • sudo diskutil corestorage revert /

     

• Note: Bluetooth seems to have some issues in High Sierra (early version)
  • the workaround seems to be turning off BT before sleep.
  • This process can be automated by installing the Sleepwatcher tools - which handles the sleep/wake scenario.
  • Optionally one can install "Clover" scripts which turn on/off all networks during shutdown via LoginHook and LogoutHook. The are scripts to re-enable all networks up login or during boot up. Go the Utility Folder in the zip and run these command:

  ./install_tools.command
  ./install_sleepwatcher.command
  ./install_clover_scripts.command

   

• Fixed: iMessage/Messages/FaceTime may not register without overriding the Clover generated values for ROM and MLB values. Search thread for ROM to get more info. Otherwise define and inject using RtVariables -- see wiki for details - there are placeholders in the config.plistFixed: TrackPoint may not be responsive on startup (very random occurrence anymore) - a sleep/wake cycle should revive it.
• Fixed: With WhateverGreen or ACPIBacklight.kext installed, boot with lid open or LCD will be black when you open it.
• Fixed: Not needed anymore: Add boot option darkwake=0 if you would like to disable power nap - and have the lid wake the gfx instead of hitting extra key.
• OBSOLETE: After installing the kexts to /L/E, sometimes the symbolic link to the actual binary file referenced in AppleHDA_20672.kext is not right. Fix this link by running this script:
  • cd /Library/Extensions/AppleHDA_20672.kext/Contents/ MacOS
    sudo rm AppleHDAsudo ln -s /System/Library/ Extensions/AppleHDA.kext/Contents/MacOS/AppleHDA
    sudo touch /System/Library/Extensions

 

Notes on Custom Kexts

• FakeSMC.kext  
  - Core hack mechanism. Using Kozlek's version + plugins + custom FakeSMC Info.plist
  - 2 Custom SMC keys are added to Kozlec's standard FakeSMC
  - FNum (to find the Fan) and ACID (for AC power and eliminate powerd syslog messages every 30 seconds).
  - A Custom package is included in the Utilities folder so you can install HWMonitor.app - it just selects these 2 Plugins Sensors: ACPI and CPU.
   
• Lilu.kext  - by acidanthera - for use with certain kexts such as AppleALC, NightShift, WhateverGreen
• AppleALC.kext - by acidanthera - Keep original/unmodified AppleHDA.kext in /S/L/E and use this kext to add full audio support for CX20672/CX20590.
  
  There are 2 layout-id profiles:
  (1) ID 14 for normal laptop ports
  and
  (2) ID 13 which adds the audio ports on the Docking Station. Thanks to Manwe150's fix/additions for dock ports.
  
  The "dock" version adds the second channel output called "Headphones" and a second Input which shows up as either "Line In or Built-in Microphone" - these ports are physically on the Docking Station itself.
  IF you have a dock and want to use the extra ports, then set/inject Audio ID 13 in the Clover config.plist - IF you DO NOT have a dock, then use everything as is (and not be confused by the extra Input/Output options!!!)
   
• WhateverGreen.kext - by acidanthera - for Graphics and Backlight patching
   
• ACPIBatteryManager.kext - by RehabMan - show/track battery info on menu bar - Note: most Info.plist items are set to False instead of True
• Bluetooth_Injector_T420.kext - adds ProductID 8575 to make BT work better (provides on/off capability).
• IntelMausiEthernet.kext - Mieze's Intel LAN kext that supports TSO, EEE and other features. Put this kext in /Library/ Extensions and remove or disable AppleIntelE1000e.kext
• IOAHCIBlockStorageInjector.kext - configured to make just the DVD device appear internal so iDVD player works.
• USBInjectAll.kext - helps with USB properties
• VoodooPS2Controller.kext (v1.9.2) - RehabMans's PS2 Keyboard/TouchPad/TrackPoint
  • SSDT are used to modify options instead - and can be used to setup alternate FN/key maps.
  • keyboard mappings have 3 or 4 finger swipe left/right to back/forward configured for Safari browser vs space swipe

 

•       Obsolete:

• AppleBackLightInjector.kext - RehabMan's Injector method - modified for Lenovo T420 to incrementally scale brightness in 17 levels from 0 to 4882 (0x1312). Note: The template file has 2 models: T420 and T460. To create a customer Injector, run the Utilities createAppleBacklightInjector script to create a custom Panel definition specific to your LCD. It will put the new injector in the kexts/Other folder. Install it along other kexts with _kext_install.bash script. cd ~/Downloads/Lenovo-T420-Clover-YYYY.MM.DD/ Utilities/Create_AppleBacklightInjector_kext/sudo ./ createAppleBacklightInjector.command
• AppleIntelE1000e.kext (v2.4.14) - Ethernet (gigE) - can go in /System/ Library/Extensions vs Plugins so OSX re-installations or patch updates will not delete it. IntelBacklight.kext (v1.0.10) - RehabMan's kext for smoother/enhanced LCD backlight (dimming) control. In 10.12.4 (or later) this kext does communicate with Brightness keys or System Preferences Display Slider. So remove this kext unless on a version older (less) than 10.12.4
• AppleHDA_20672.kext (v999.99) Keep original/unmodified AppleHDA.kext and add this kext to /L/E for full audio support for CX20672 (same as CX20590). Note: requires matching DSDT sections for Conexant Codec and layoutID 12. and Kext Patch via Clover. Also has Manwe150's fix/additions for dock ports. Credit and thanks to vladichimescu. There are 2 files in AppleHDA_20672.kext/Contents/Resources Platforms.xml.zlib.dock and Platforms.xml.zlib.nodock The "dock" version adds the second audio output called "Headphones" and a second Input "Line In" - both of which are on the Docking Station itself. • - IF you have a dock and want to use these ports - then just replace the Platforms.xml.zlib file with Platforms.xml.zlib.dock • - IF you DO NOT have a dock, then use the new kext as is! (and not be confused by the extra Input/Output options!!!)

 

General Notes, Fixes, and Features

Installing Clover from the .pkg file:
If you would like to run the included installer package, Clover_v2.5k_rxxxx.pkg, to install the related tools and latest bits into the OS and ESP of this HD, there is an installer package in the Utilities directory.

Select (check box) at least first 2 items! This picture shows a good set of overall options:

 

After you close the pkg installer, then follow these step to replace the ESP with the zip contents (step 4 above)

• There are extra Clover configuration files (config.plist) that use the custom DSDT and WITH extra Clover patching for EDID

  • Certain config files inject an alternate EDID - rather than the default/built-in EDID for your LCD. These EDID were extracted and corrected (set to RGB only mode etc) from other LCD vendors such as LGD that seem to work better than the common/inferior standard from AUO. Historically, these fix problems such as white screen, glitches, and ring buffer hangs. 

    • config.EDID-2e2.plist
    • config.EDID-2e3.plist
    • config.EDID-366.plist

  • One should start with config.plist 

    if there are freezes or glitches, then try config.EDID-2e2 or EDID-2e3

    Note: The Model should be set to MacBookPro8,1 to get proper Graphics patching - DP/HDMI/DVI/VGA FrameBuffers

    • config.patchDSDT.plist - does some patching.
    • config.plist (default) - only fixes regions 

  • Some folks were seeing problems when Clover was asked to patch the DSDT - most of the patching was redundant with the provided DSDT. So there are 2 generic versions - (1) does a number of patches to patch the built-in DSDT (i.e. when you don't provide one) and (2) a config.plist that does almost nothing to patch the DSDT. Over the years - way before the current SSDT/hot-patch approach was devised - manual edits were made to the DSDT.

• Clover does dynamic patching
  • Patch for AppleIntelSNBGraphicsFB.kext - The included patch replaces the 4th port/buffer (DVI on dock) with VGA on left side. The 4 ports after patch are: LCD, DisplayPort on side, DisplayPort on dock, VGA on side. If you need DVI on the dock - then disable this patch! Or modify the edit scheme to change the 2nd or 3rd port (DP) to be the DVI if still want the VGA port.
  • Patch for IOAHCIBlockStorage.kext - adds SSD TRIM function for a 3rd Party SSD - one can use the "trimforce" command now
  • Patch for SATA ultra bay
  • Note: Lilu+AppleALC will patch AppleHDA.kext for audio codec Conexant 20590/20672 chipset
• The Zip includes Clover files and custom kexts with kext install script: _kextinstall.command (but this is not really needed anymore)
• Gfx parameter files in Displays/Overrides offer more natural color gamma curves and screen options
• Newer Thinkpad theme - adds macOS Icons that may not be in the standard clover installer.
• Special keys on laptop (not USB or Bluetooth keyboard) without keymap remap SSDT : 
  • FN keys
  • LCD Brightness are controlled by these 2 button pairs to change brightness up/down: Fn+Home/End or ScrLck/Pause
  • Audio Levels: The 3 buttons above F1-F3 control volume (except mic mute)
  • Insert key is the CD/DVD eject.
  • Blue ThinkVantage button - toggles fan to highest speed.
  • The Alt key is the Mac Command key and Microsoft flag key is the Mac Option key.
  • Fn+PgUp - turns on the light!
     

DSDT Notes

• Some of the DSDT tweaks (beyond manwe150's original version) are listed here.
• DSDT includes source and binary
• The "EDID" versions of DSDT.aml be use override removes infamous HD 3000 glitches and buffer hangs or so-called artifacts for 1600x.900 LCD.
• Added MaxBeepBootVolume to DSDT to rid AppleHDA assertion on startup
• Shutdown fixes in DSDT _PTS and _WAK (thanks to TimeWalker75, RehabMan and Manwe150)
• Change/fixes to reset LEDs for proper sleep/wake status
• Battery fixes to use native/current ACPIPlatform.kext with Rehabman's ACPIBatteryManager.kext - no need to rollback or patch AppleACPIPlatform.kext anymore.
• PNLF additions from RehabMan provide smoother/wider LCD backlight control with IntelBacklight.kext
• DSDT mods to KBD device - renamed to PS2K and added LENOVO OEM-ids for VoodooPS2Controller to use.
• The PS2 Keyboard is identified as id LENOVO table-id T420 which will pickup the custom VoodooPS2Controller settings.
• For El Capitan+, removed the _PRW method from some of the devices in the DSDT

DSDT for "heat-step" (DSDT.heat-step.aml) has a modified method to incrementally control the fan speed vs automatically by BIOS.

Follow the installation recipe to use this approach:

1. copy/replace the default DSDT.aml file with the DSDT.heat-step.aml file in the ESP (cp DSDT.heat-step.aml patched/DSDT.aml)
2. make sure the ACPIPoller.kext is in use (move from Misc to Other folder) to active the method - changes fan speed vs CPU temperature.
3. reboot

For Example:

mkdir /Volumes/ESP
sudo mount -t msdos /dev/disk0s1 /Volumes/ESP
cp -a /Volumes/ESP/EFI/CLOVER/ACPI/DSDT.heatstep.aml /Volumes/ESP/EFI/CLOVER/ACPI/patched/DSDT.aml
cp -a /Volumes/ESP/EFI/CLOVER/ACPI/kexts/Misc/ACPIPoller.kext /Volumes/ESP/EFI/CLOVER/kexts/Other/

 

• Scripts and tools will be put in /usr/local/bin.

• A directory ~/Library/ssdtPRGen will be created with other related data

• Script creates P and C states to match system CPU. One can hand-edit to modify values for lower power consumption.

• Copy ssdt.aml to your ESP ACPI/patched folder: /Volumes/ESP/EFI/CLOVER/ACPI/patched

Edited November 21, 2021 by tluck
Updates for Mojave/Catalina

[verleihnix]

Hi,

I had a head crash a few days before, today the replacement HD arrived. 

I like to go for clover this time. Maveriks is already installed.

It sems to boot fine, but not into graphics.

Framebuffer messages is coming up: "SNB Framebuffer did not show up, unload"

dsmos arrives. HD led is still flashing in background. Has 1600x900 LCD

 

any suggestions

[Tetonne]

feed back :

T420_UEFI_Clover-b2211_10.8.5+10.9.0 ok on 10.8.5 and 10.9  thanks

[tluck]

@verleihnix - do you have FakeSMC (and other kexts) installed  to HD  /S/L/E? there were some problems with kext injection until b2217 

 

I just reposted with Clover b2217 - this might make it easier for folks to make either a 10.8 or 10.9 USB installer as well sort out the OEM section.

The top level config.plist will inject the kexts which are good for an installer or so that a virgin installation will work. i

 

Note: currently i prefer to install custom kexts on my HD /S/L/E versus  just leave on clover ESP. 

[sot_22]

Hello tluck sorry if this is off topic ,  i'm using your patched applehda from 10.8.5 with the same dsdt edits as your laptop (mine is x220) and works great when i'm using unpatched acpiplatform 10.8.4 kext but when i'm using unpatched acpiplatform from 10.8.5 the sound works alright but after sleep/wake i lose the sound from the speakers but the headphones work! (that's weird) , the sound from the speakers comes back only if i shutdown the laptop and turn it on again, if i restart i still have no sound from speakers , ( if i use the patched files from ErmaC it works ok but i'm preparing my dsdt for Mavericks too and want to stay native ) , its weird that headphones works perfect always and only the speakers dont work 

[tluck]

@sot_22 - i did a quick test on 10.9 with unmod ACPI kext and same thing?! laptop speaker is dead but lineout/headphones still work after wake? maybe we need ErmaC to patch one for 10.9 too! good to know that his patching seems to help us (as well as others). not quite sure what his patch is all about at this time.

[sot_22]

thanks for confirming this problem, it seems apple changed something in acpi kext on 10.8.5 and onwards which broke first for them (now it seems fixed) HDMI audio after waking from sleep as stated by their supplemental update and second our speaker audio ... if ErmaC can patch the 10.9 will be great , i'm searching for a fix or the cause of disabled speakers but i didnt find any info yet

[tluck]

not to take anything away from ErmaC,  but I looked closer at his patched AppleACPIPlatform.kexts. Well it seems he is more or less just leveraging the Snowleopard v.1.3.5 binaries in his 10.8.x kexts. in other words it seems as if is the same as what we were using in earlier on when we replaced AppleACPIPlatform with 1.3.5. 

 

But I wonder why some can use the actual native AppleACPIPlatform from 10.8.5 and 10.9 and some can't. i am on Bios 1.46 with embedded controller v 1.20.

[sot_22]

(for the ones having smc errors) remove the ACPISensors plugin from fakesmc and see if the errors go away or maybe wrong ssdt or dsdt, i read that some errors are normal (like SMC reverting to old mode etc...) i have them too and they dont do anything wrong

 

another one setting to blame is if they have virtualization vt-d enable in bios (it must be disable for osx to boot) but this info is on this thread already

[ag6952563]

(for the ones having smc errors) remove the ACPISensors plugin from fakesmc and see if the errors go away or maybe wrong ssdt or dsdt, i read that some errors are normal (like SMC reverting to old mode etc...) i have them too and they dont do anything wrong

 

another one setting to blame is if they have virtualization vt-d enable in bios (it must be disable for osx to boot) but this info is on this thread already

Hi guys, I do get the errors... and I think I recently enabled the vt-d virtualization in the BIOS. I will check the computer tomorrow and try again. I think this could be the reason...

[sot_22]

if ErmaC patch is basically a rollback to v.1.3.5 binaries (i don't know if thats the case) then its better to find a way for the speakers sound to work with the native kexts now that there isn't a problem with the battery anymore , this blog : https://digitaldj.net/blog/   if you scroll a little down the posts has some info on applehda , i don't know if this helps or can help if there is some detail in applehda which needs tweaking now cause if there is something wrong in acpiplatform kext and disables the speakers after sleep why it doesn't happen on real macs too

[ag6952563]

Hi guys, just confirming that I had the vt-d virtualization enabled in the BIOS, and that was causing the SMC errors with vanilla AppleACPIPlatform from 10.8.5.

I have disabled this option in the BIOS and now all runs good with the vanilla kext.

I think somebody else had this issues as well. If so, please check your vt-d virtualization.

 

Thanks a lot tluck and sot_22 for your help.

[tluck]

@ag695263 - great news. glad the new DSDT etc is working fine for you too.

 

@sot_22 - excellent article -  I added the Max Beep thing into the DSDT and no assertion now. don't think i will get into any detailed size patching as it works fine as is. 

the speaker thing seems to be broken with 1.8 ACPIPlatform (from 10.8.5) and later. The v1.7 from 10.8.0-10.8.4 works fine - even with 10.9. Although my esata disk does not alway wake from sleep with this older version; the later versions seem to do better job here.

[vapayo]

Hey,

today I tried installing 10.8 on my T420 (4236-C32, HD+, i5, 2.5GHz) without WWAN and with SSD.

I tried all of the bundles from this thread, but non of them works for me.

With the clover bundle from the first post I was able to successfully boot into the installer and install OSX to my hard drive.

But whenit reboots it only shows "Installing" and a "progressless progressbar". (Dont know how it is called )

Waited for hours, but nothing happens.

 

Using other clover bundles I only got "waiting for AppleSMC".

 

Using the latest bundle from tluck I can boot too if I set InjectKexts to true, but it also hangs in the installer screen after rebooting.

 

Of course I tried different DSDTs/no DSDT, etc.

I have no idea what I can do.

Does anyone have another idea? :-)

 

Greetings,

Simon

 

Edit: BIOS settings are like mentioned on the first pages.

[tluck]

@vapayo -- i am not sure i understand what state you are in after you install. i use LionDisk maker to make a 10.8.5 installer and when done - you reboot.  then it there isn't any progress bar? how did you make the installer? the bundle i built is good for the installer and the HD after install.   

[vapayo]

Hey,

thanks for your answer.

I also created my usb stick using Lion Disk Maker using an Installer.dmg.

 

But I also have never seen such a result. I boot the usb stick, format my drive using the disk utility and after installing clover calls my hdd "OSX Installer".

When booting it looks like shown in this video:

 

Edit: I just redownloaded the installer app and reinstalled but nothing changed.

[tluck]

@vapayo - thats an odd thing to happen. the LionDisk Installer after boot up should put into a panel that asks what Language etc.  is this on a fresh HD? if not maybe you have some left over .IAbootfile folder in the root?

[vapayo]

Hey,

thanks for your answer.

The language dialog comes when I boot the installer usb. (I select german, the setup is german, but when rebooting the "installing"-screen is english)

 

I have 3 Partitions on my harddrive, EFI, Windows, OS X.

Before installing I always formatted the OS X partition using the disk utility, so I think there shouldnt be some left files, right?

[tluck]

well. if OSX is installed on your HD, then Clover should NOT be giving you this option: Boot OS X Install from Machintosh HD. some how you have an installer option and not the "regular OS" ... for it should be give you option: Boot Mac OS X from Machintosh HD 

[vapayo]

Hmm,

is there something I can do about that?

 

I have not done anything special except the windows partition, but I do not see why this should make my fresh installation an installer. O.o

 

Edit: And it is 100% on the harddrive, I can boot it when I remove the installer usb stick.