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Lenovo ThinkPad T420 with UEFI Only

* * * * * 12 votes UEFI ThinkPad T420 Lenovo Clover

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

23-October-2014 Update

  • Clover r2967 - or stay on r2953 - it is still fine.
  • Recompiled VoodooPS2Controller.kext v1.8.13 with added Lenovo T420 sections for Keyboard/TouchPad/TrackPoint
  • Bumped the ACPIBatteryManager.kext up to v1.53
  • Added Platforms.xml file for use with Docking Station (and No-Dock default) option in AppleHDA_20672.kext

18-October-2014 - OS X 10.8.x 10.9.x 10.10.x Update

  • Clover updated to v2953
  • New custom kexts AppleHDA_20672.kext (fixed since October 13) and BroadcomBluetooth_T420.kext are added. Huge thanks to vladichimescu for showing me this kext method.
  • All custom/extra kexts are OS version independent and go in /Systems/Library/Extensions 
  • New Clover config.plist files for on-the-fly HDA kext patching. No need to replace any kexts after updates anymore.
  • Removed EmuVariableUefi-64.efi driver to use native NVRAM (vs /nvram.plist) - see note below on how to migrate.
  • FakeSMC updated to 6.11.1328
  • Added drop table MCFG for Nvidia/Optimus (mixed gfx)
  • Added drop table DMAR so VT-d does not have to be disabled
  • ACPIBacklight.kext - v2.0.3 - with modified code to fix/workaround for LCD brightness in Yosemite.
  • Updated 10.10 kexts folder (10.10. AppleHDA and BroadcomBluetooth kexts + Hackintosh Kexts)
  • Updated 10.9  kexts folder (10.9.5 AppleHDA and BroadcomBluetooth kexts + Hackintosh Kexts)
  • Note: To make an Mavericks USB installer, just follow the Yosemite method

Lenovo T420 Clover Guide

 

Attached is a current /EFI pack for the Lenovo T420 using Clover on OS X versions:

  • 10.10  Yosemite
  • 10.9    Mavericks
  • 10.8    Mountain Lion (not tested anymore!)

Why Clover vs Chameleon?

  • Native UEFI boot support for OS X and Windows on GUID/GPT disks.
  • Native Apple OS X Installers and App Store Updaters. 
  • Supports Recovery HD for system recovery and 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 is a zip contains what is working for me on my specific model. The guide outlines the 2 phases: (1) how create a USB installer and install OSX, and (2) run OSX for your HD. If your HW is not similar as mine, the included DSDT and configuration files may need to be retrofitted to work for your system.  The models T420s, T420i as well as the T520 family may work as is or need some changes to the DSDT.

 

Highlights:

  • Clover config.plist + required kexts + custom DSDT
  • 2 versions are separated by LCD size
    • ACPI.1600x900 folder - has dsdt.aml for high-res LCD with DualLink=1 and injects a good/patched EDID
    • ACPI.1366x768 folder - has dsdt.aml for low-res  LCD with DualLink=0 and no injected EDID
    • Note: the CPU section is not needed in the config.plist anymore, as Clover computes Bus Speed ok in later revs - check it though! should be around 99676 - 99700 to keep system clock accurate.
  • A current Clover and Kext Bundle for 10.8, 10.9 and 10.10 is here in this post
  • An older non-maintained Kext Bundle for 10.8.4 is in post #241

Misc Notes:

  • VoodooPS2Controller.kext  - slightly modified Info.plist(s) to add LENOVO T420 keys. Removed HP and few other non-relevant options in various Info.plist files.
     
  • Note: TrackPad pressure FingerZ value set to 47 - up from default of 30  - change to suite your touch in VoodooPS2Controller.kext/Contents/PlugIns/VoodooPS2TrackPad.kext/Contents/Info.plist
  • DSDT mods to KBD device - renamed to PS2K and added LENOVO OEM-ids for VoodooPS2Controller to use.
     
  • Added RehabMan's ACPIBacklight.kext v2.0.2 for smoother dimming. (patched DSDT included)
  • RehabMan's DSDT mods to PNLF for ACPIBacklight.kext to function (adds wider smoother LCD brightness range)
     
  • Included is a revised Pike's  SSDT generation script (sdtPRgen-clover.command) and a local copy of iasl. running the script will end with making a copy of ssdt.aml into proper ESP location when mounted.

Custom Kexts

 

Use kext install tool to install all kexts to /S/L/E (/System/Library/Extensions).

  • FakeSMC.kext (v6.x.xxxx) - Core hack mechanism. Using Kozlek's version + plugins - Note: Follow link to download full package - so you can install HWMonitor.app etc (no need to re-install FakeSMC.kext unless there is a newer rev - so if you do install - just select these 2 Plugins Sensors: ACPI and CPU)
  • AppleIntelE1000e.kext (v2.4.14) - Ethernet (gigE) - can go in /System/Library/Extensions vs Plugins so updates will not delete it.
  • VoodooPS2Controller.kext (v1.8.13) - T420 version of RehabMans's PS2 Keyboad/TouchPad/TrackPoint -  Note: Follow link to get full package and installation instructions to install daemon and pref-panel This version has extra T420 definitions in the Info.plist files.
  • ACPIBatteryManager.kext (v1.53) - RehabMan's kext configured for v3 ACPI instructions to show/track battery info on menu bar
  • ACPIBacklight.kext (v2.0.3) - RehabMan's kext for smoother/enhanced LCD backlight (dimming) control. The fix is for a Yosemite quirk.
  • IOAHCIBlockStorageInjector.kext -  configured to make just the DVD device appear internal so iDVD player works. 
  • BroadcomBluetooth_T420.kext (v999.99) - adds ProductID 8575 to make BT work better (on/off capability). Keep original/modified BroadcomBluetooth plug-in and add this kext to /S/L/E.
  • AppleHDA_20672.kext (v999.99) Keep original/unmodified AppleHDA.kext and add this kext to /S/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 2nd audio output called "Headphones" and a 2nd Input "Line In" - both of which are on the Docking Station itself.

    IF you have a dock - 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 of the Zip

  • Clover configuration files (config.plist) 
     a ) config.plist               - (default) to use the custom DSDT and WITH extra Clover patching
     b ) config.nodsdt.plist   - this testing version - everything works except battery levels
                                           - remove/rename DSDT.aml and use built-in/BIOS DSDT with Clover patching
  • Model is to set MacBookPro8,1 explicitly in config.plist. (needed to get proper DP/HDMI/DVI/VGA FrameBuffers)
  • Zip includes extra and custom kexts plus cVad's Kext Utility v2.5.7 for easy kext installation (or you can use manual kext  _install_SLE.bash script)
    Note: VoodooPS2Controller keyboard mappings have 3 or 4 finger swipe left/right to back/forward for browsers configured.
  • removed ssdt.aml files from zip and added ssdtPRgen-clover.command script so you can create your own SSDT P/C state tables
  • High-res vs low-res config.plist (and DSDT) are very consistent - difference is EDID and DualLink settings.
  • Note: for 1600x900 the EDID is injected by Clover and is also in the 1600x900 version of the DSDT for - there are 2 sets of timings for 60 and 50 Hz options
  • Added folder for Displays/Overrides (for more natural color gamma curves and more screen size options) in this zip
  • Swapped out VBoxHFS-64.efi for HFSPlus-64.efi - supports installation bundles and Recovery HD better.
  • Clover patches string for SNBFrameBuffer kext to fix LCD brightness max level - now its the same brightness before and after sleep. Thanks to Timewalker75a (again!)
    Note: this same kext 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 you can either not do this! Or replace the 3rd port (DP) if you want the VGA.
  • Thinkpad theme (updated) to show badge (disk type) and added a Mavericks and Yosemite Icons instead of using generic apple.
  • ScrLk and Pause keys change LCD brightness. ThinkPad button toggles fan to high speed.
  • Alt key is the Command key and Microsoft flag key is the Option key.

A few DSDT tweaks:

  • DSDT includes source and binary with recent patches (some beyond Clover and manwe150's original post edits)
  • 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.

  • For 1600x900 LCDs, added an EDID that removes infamous HD 3000 glitches and buffer hangs.

  • PNLF additions from RehabMan for smoother LCD backlight control with ACPIBacklight.kext

  • PS2K (Keyboard) is identified as id LENOVO table-id T420 to use custom VoodooPS2Controller settings.

EmuVariableUefi-64.efi migration

 

1) Before updating if you are still using EmuVariable, run this command see and then save current nvram values:

nvram -p
nvram -xp > ~/nvram.plist

2) Update the ESP with new Clover version (from zip or pkg) - uncheck EmuVariableUEFI-64 driver option.

3) Rename (or remove) EmuVariable driver the ESP so it will not be loaded on next boot, if there is one still in the Clover driver folder.  

Note: manually mount ESP on /Volumes/EFI or /Volumes/ESP, if not already mounted and then run:

mv /Volumes/ESP/EFI/CLOVER/drivers64UEFI/EmuVariableUEFI-64.efi /Volumes/ESP/EFI/CLOVER/drivers64UEFI/EmuVariableUEFI-64.efi.NU

4) Reboot and restore previous nvram values and remove Clover NVRam variable. You should see some variables already in there!

nvram -p

sudo nvram -xf ~/nvram.plist
sudo nvram -d Clover.NVRamDisk

5) Reboot to boot run with final values! 

 

INSTALLATION GUIDE

 

BIOS settings:

- Recommend update to BIOS v1.46

- Recommend reset to defaults. Most defaults settings will work but validate these settings:

- SATA set AHCI mode

- Enable Execution Bit

- Disable VT-d in the Virtualization option (or keep drop DMAR table in config.plist - done by clover).

- Disable Discrete Nvidia/Optimus (use integrated HD 3000 only - unless you really know what you are doing!)

 

The custom DSDT is based off BIOS v1.46 (flashed with whitelist mod or original)

 

Part 1 - OS Installation

 

Install (or reinstall/update) OS X to a GUID/GPT formated disk from a USB using the standard Install OSX .app

You can use this zip to build a Clover-based USB installer and then install on HD for UEFI boot.

  • For Mavericks (10.9.x) and Yosemite (10.10.x) USB installer
  1. Download latest Yosemite or Mavericks from the App Store - default location is in /Applications
  2. Partition an 8GB USB as GUID (use option menu to change from MBR) - name this partition USB
    Note: if you format the USB as MBR, then you will need to install the Clover boot tools (after) - see note at the bottom.
    Note: if you have a larger USB (say 16GB) you can split into 2 8GB partitions, so you can have 10.9 and 10.10 installers on the same USB key
  3. Run this command (if Mavericks, the replace word Yosemite with Mavericks):
    sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia --volume /Volumes/USB --applicationpath /Applications/Install\ OS\ X\ Yosemite.app —nointeraction
    
  • Common steps
  1. manually mount ESP of USB and copy the entire EFI folder (from the zip) onto USB ESP
    For example, assuming the USB is disk2:

    sudo mkdir /Volumes/ESP-USB
    sudo mount -t msdos /dev/disk2s1 /Volumes/ESP-USB
    sudo cp -a ~/Downloads/T420/EFI /Volumes/ESP-USB

    Note: run "diskutil list" on the command line to find your USB disk
             if your USB is MBR format - just copy the EFI structure to the / (root) of the main partition instead!

     

  2. Setup configuration files to match your LCD resolution in /Volumes/ESP-USB/EFI/CLOVER:
    1. ​​​Rename ACPI.1600x900 to ACPI or rename ACPI.1366x768 to ACPI
    2. Rename config.1600x900.plist to config.plist or rename config.1366x768.plist to config.plist
       
  3. Boot from USB and select Install OSX
     
  4. Install on your GUID OSX partition! 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”
And set up the network later after installation the NIC driver kext.
And your Intel WiFi will not work. Period. 

 

 

TIP: Enable debug mode for Disk Utility to see all the partitions (such as hidden EFI). From the Terminal command line, run this:

defaults write com.apple.DiskUtility DUDebugMenuEnabled 1

Part 2 - Post OS Installation and Setup on HD

  1. Boot Clover from USB - but now select the new OS X partition to start OS X. 
    This will boot up OS X with Clover using the custom kexts with the "top" level config.plist.
     
  2. Install Clover on to HD 

    a ) Run the full Clover_v2k_rxxxx.pkg to install the related latest bits into the HD OS and ESP (usually partition 1) of disk0. Use the link to download the pkg from SourceForge.  You can do this step later on if you don't have way to get it before you are setup on the network. Select (check box) at least first 2 items! This picture shows a good set of overall options:
    [attachment=149386:clover-pkg-options.png] After you close the pkg installer, then follow these step:

    b ) REPLACE the ESP (EFI folders) contents with the exact CLOVER folder as your setup on USB from steps above. If not still automatically mounted by the installer pkg, manually mount the ESP of your HD on say /Volumes/ESP. Then copy and replace the folders /Volume/ESP/EFI/CLOVER and BOOT from the USB installer you just built and used.
     
  3. Install custom kexts on HD
    • Recommended: Use the folder with its config.plist with the custom dsdt.aml (as is) to start.  And install the custom kexts from the zip folder to the /System/Library/Extensions folder. 

      Install these kexts from the zip folder EFI/CLOVER/kexts/10.[8 or 9 or 10] by either method:
      - if you don't have a GUI, use the included shell script _kext-install-SLE.bash
      OR 

      - if you have a GUI, then use the Kext Utility tool (from cvad included in Utilities folder). 

      Note: If you choose to NOT install the custom kexts in the OS /S/L/E folder, then modify the config.plist to force injection of these custom kexts. Note: Injecting AppleHDA and BroadcomBluetooth kexts from the ESP may conflict unless the originals are removed from /S/L/E. 
       
  4. Install (copy) the DisplayVendorID-* folders
    These are from the zip file and should be put in /System/Library/Display/Overrides
    Note: These provide alternate color correction and gamma curves as well as more screen sizes for just a few LCD models. 
     
  5. Reboot - Boot Clover from HD vs USB.
    Hit the spacebar on your boot selection (OSX) to start up
     without kext caches to make sure it loads all the custom kexts just installed. 
     
  6. Ethernet Device Install
    Note: This step is optional but usually needed after a fresh OS install.
    This loads the ethernet kext and resets network device order to have ethernet as en0 (may help with iMessage etc)
    Run this set of commands in a terminal window:
    sudo kextload /System/Library/Extensions/AppleIntelE1000e.kext
    sleep 10
    sudo rm       /Library/Preferences/SystemConfiguration/NetworkInterfaces.plist
    
  7. Create a custom SSDT (optional)
    Creates P and C states to match system CPU. Test against Clover generated SSDT PM tables - may be the same performance lately. (Long ago Clover had some issues here.)
    Run the custom ssdtPRgen-clover.command script in Zip Utilities folder. It should ask you if you want copy ssdt.aml to your ESP ACPI/patched folder, otherwise copy/move ssdt.aml to the same location as your custom dsdt.aml 
    which is: /Volumes/ESP/EFI/CLOVER/ACPI/patched

    Note: it will copy iasl from the Utility folder to /usr/local/bin/iasl

     
  8. Reboot a final time to use the new SSDT table (and other changes from last 3 steps)

Random Tips:

  • Enable (turn 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!
  • When using external headphones or speakers, may need to plug and unplug 1 or 2 times for recognition.

 

Known Issues:

  • E1000e ethernet hang: with the 2.5.4d and 3.x version of the Intel E1000e ethernet kext, I have seen some random problems. I rolled back to v2.4.14 and have not had issues lately. The issue occurs under heavy file copy/transfers and your ethernet stops working with a lot of log messages that only a reboot fixes. 
     
  • iMessage/Facetime may not register without overriding the Clover generated values with real ROM and MLB values from a real Apple Mac.
     
  • With ACPIBacklight.kext installed, boot with lid open or LCD will be black when you open it.
     
  • Hibernation does not wake from stored image with OsxAptioFixDrv-64.efi - suggested setting:
    sudo pmset -a hibernatemode 0
    rm /var/vm/sleepimage

OR if you really need hibernation:

 

use (experimental) OsxAptioFix2Drv.efi instead of OsxAptioFixDrv-64.efi UEFI driver and set hibernate mode to 7 (like 3 with no encryption)

sudo pmset -a hibernatemode 7

 

Note: booting from hibernated image may have jumbled LCD until one sleep/wake (non-hibernated) cycle.

 

 

Old issues - no longer happening. 

These 4 problems listed below happened with earlier versions of Clover and OS X  but on 10.9.2 or later, and with the rewrite of Clover and OsxAptopFixdrv-64.efi, these UEFI/ESP issues are seem to be a thing of the past.

 
  1. putting to sleep can result in flashing/hung state

  2. built-in keyboard mute button can totally freeze system - works fine from software (i.e. apple bluetooth KB)

  3. shutdown may not go all the way to full power off (OS shuts down but at black screen with fans/lights on)

  4. built-in PS2 keyboard/trackpad may disappear after sleep/wake 

Optional: Boot with Clover on MBR USB

 

One can still boot from the HD using UEFI. But one can also create a bootable MBR formatted USB with CloverEFI. This boot method may mitigate any random UEFI issues. The exact same EFI folder can be used. To make a bootable MBR USB:

  1. Format the stick as MBR (which is usually the default) with a single FAT32 partition named USB.
  2. Optionally copy the OSX installer to USB (same command for GUID USB above) but must be done before steps below!
  3. Then with Clover_v2k_rxxxx.pkg, install to the USB for "legacy CloverEFI" boot.  That is: Uncheck the top 2 items, and in Bootloader check the 2nd option to install boot0af.
  4. After the Clover pkg installer is finished and closed, then replace the EFI/CLOVER folder just like you did on the HD. the EFI/BOOT folder is not needed. Note: the HD ESP EFI folder and USB EFI folder should be exactly the same now.
  5. Then from the BIOS, set USB-HDD as top boot option (so you don't have manually boot from USB vs the HD)
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#21
distortionmusic

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I think there is my experimental DSDT.aml in the patched folder, try replacing it with the one I'm using right now.


Working now without KP, only sound is gone. What did you modify on it? Rest works great without KP's now!

#22
Kogen Mantis

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Yes sorry... forgot about the sound is using codec ID 12 now, cause I'm testing other AppleHDA driver found in this post.
HPET is fixed by adding IRQ's 0,8,11 and 15

#23
distortionmusic

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Here's a screenshot uploaded from my T420.
Used your latest dsdt from post #21 (for anyone having same issues ;) ) working great now!

@Kogen Mantis, you're doing a great job here, thanks very much for the work you have done and what you're doing! Even sleep is working etc etc!

Posted Image

#24
distortionmusic

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After a day i use I notice that sometimes when I close the lid, it doesn't go to sleep but freezes with a black screen and a flashing sleep indicator. Do you have that as well or would that be specific to my model Thinkpad and it's DSDT now?

#25
Kogen Mantis

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After a day i use I notice that sometimes when I close the lid, it doesn't go to sleep but freezes with a black screen and a flashing sleep indicator. Do you have that as well or would that be specific to my model Thinkpad and it's DSDT now?

I'm doing so many test with different types of setup and configurations that I've didn't noticed that... I mean sleep doesn't work as expected sometimes but I was always blaming something else than the DSDT. I guess I should look closer into it.
What UEFI Bios version you are at now? And can you write down the steps to reproduce the sleep problem.
Also I have hibernatemode disabled:
sudo pmset -a hibernatemode 0
sudo rm /var/vm/sleepimage


#26
distortionmusic

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I'm doing so many test with different types of setup and configurations that I've didn't noticed that... I mean sleep doesn't work as expected sometimes but I was always blaming something else than the DSDT. I guess I should look closer into it.
What UEFI Bios version you are at now? And can you write down the steps to reproduce the sleep problem.
Also I have hibernatemode disabled:

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


I use the original 1.43 bios now.

How does your system run now then? I am running OSX only now, and I use it for school every day (Yeah it's a bit tricky but it does work much better then Windows).


EDIT: disable hibernate works really well, it goes to sleep faster (immediately) and it wakes up with the same speed as well!

Can you tell me how your testing with the other sound kext is going? I can't get it to work yet, I've read trough the tread but I'm not much wiser yet haha.

I can confirm that everything that worked before update keeps working after update to 10.8.2 btw. It runs really stable and fast, much better then with chameleon and non-efi use.

Joke is, that with the use of EFI, you really get all the "toys" you have with a real mac. Like you mentioned in your first post. Even Bootcamp seems to be working.

#27
Kogen Mantis

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I use the original 1.43 bios now.

How does your system run now then? I am running OSX only now, and I use it for school every day (Yeah it's a bit tricky but it does work much better then Windows).


EDIT: disable hibernate works really well, it goes to sleep faster (immediately) and it wakes up with the same speed as well!

In general I'm very happy about the result, but there are few little things that are still bugging me.
- brightness is lower than default (i use bottom-right corner to put display to sleep and wake it up for better brightness)
- SD card reader not working (though I use the pci-express to SD-card adapter)
- it would be nice to have a better mouse driver

#28
distortionmusic

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In general I'm very happy about the result, but there are few little things that are still bugging me.
- brightness is lower than default (i use bottom-right corner to put display to sleep and wake it up for better brightness)
- SD card reader not working (though I use the pci-express to SD-card adapter)
- it would be nice to have a better mouse driver


Yeah indeed. Brightness is not really an issue in my case, because I use mine for school. Which means, I use lower brightness anyway for longer battery life, but I put it to sleep every now and then as well.
I was searching the net for a possibility to use multitouch like the newer MacBooks have (three finger window switching etc), would be great it there just was sectretly hidden button to turn multitouch options in prefpane for touchpad...

can you tell what you have done to make sound kexts from the project you mentioned? I didn't get the way he got it to work.

#29
Kogen Mantis

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Yeah indeed. Brightness is not really an issue in my case, because I use mine for school. Which means, I use lower brightness anyway for longer battery life, but I put it to sleep every now and then as well.
I was searching the net for a possibility to use multitouch like the newer MacBooks have (three finger window switching etc), would be great it there just was sectretly hidden button to turn multitouch options in prefpane for touchpad...

can you tell what you have done to make sound kexts from the project you mentioned? I didn't get the way he got it to work.

I always install new kexts by /Extra/Extensions/ using myHack | myFix so just put the patched AppleHDA.kext in there and move the original one from /L/S/E
sudo mv /System/Library/Extensions/AppleHDA.kext /System/
and run myFix (Quick mode)

#30
Anthony C

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So I got ML installed and ran the myHack however I have no sound or network. I'm trying to learn how to generate a DSDT but haven't been successful yet. Do I need to reinstall?


machine type: 4179w1f



Thanks....

#31
Kogen Mantis

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So I got ML installed and ran the myHack however I have no sound or network. I'm trying to learn how to generate a DSDT but haven't been successful yet. Do I need to reinstall?

machine type: 4179w1f
...

No there's no point for reinstalling. Beside the HD (Low resolution) screen you have basically thesame hardware specs like I do. So again... rename the 4180A32 folder inside EFI/OEM/ to 4179W1F and use this dsdt: Attached File  dsdt-143001.zip   25.91KB   257 downloads but change the DualLink to 0:
"AAPL00,DualLink",
Buffer (0x04)
{
0x00, 0x00, 0x00, 0x00
},
place the edited dsdt file in
EFI/OEM/4179W1F/ACPI/patched/
As for sound driver read post #30

#32
seraph1024

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I am doing this on my Lenovo T420 (Type 4178-6WU) with SN R8-Y2BLZ. I have tried different DSDT files as well. I keep getting hung on ACPI_SMC_PlatformPlugin::InitFanThrottleControl - Waiting for AppleSMC
What else am i missing. I am using a FAT32 USB with CLOVER2 and your EFI update from the first post.

#33
Kogen Mantis

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I am doing this on my Lenovo T420 (Type 4178-6WU) with SN R8-Y2BLZ. I have tried different DSDT files as well. I keep getting hung on ACPI_SMC_PlatformPlugin::InitFanThrottleControl - Waiting for AppleSMC
What else am i missing. I am using a FAT32 USB with CLOVER2 and your EFI update from the first post.

Looks like FakeSMC.kext is not loading ... make sure you have it in:
EFI/kexts/10.8/ or in case you renamed my folder to your model name in OEM/41786WU/kexts/10.8/

#34
seraph1024

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Looks like FakeSMC.kext is not loading ... make sure you have it in:
EFI/kexts/10.8/ or in case you renamed my folder to your model name in OEM/41786WU/kexts/10.8/


Thanks for the quick reply. Same issue even with FakeSMC in both folders. I do have dual video cards on this verison. Could that be the issue?

#35
seraph1024

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Well, after moving things around, it is now going in a loop.

#36
Kogen Mantis

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Thanks for the quick reply. Same issue even with FakeSMC in both folders. I do have dual video cards on this verison. Could that be the issue?

The more information you give the better chance to resolve your issue.
- what OSX version you are trying to boot?

Update: Try disabling OEM table DMAR in Clover option during boot and report back

Edited by Kogen Mantis, 10 February 2013 - 04:40 PM.


#37
Tetonne

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Device Properties injected :
in terminal

ioreg -lw0 -p IODeviceTree -n efi -r -x | grep device-properties | sed 's/.*<//;s/>.*//;'


save the digit in text.app


for example :

450000000100000001000000390000000100000002010c00d041030a000000000101060000197fff0400160000006200750069006c0074002d0069006e0000000500000001...


in config.plist add (/EFI/OEM/folder name with Type of T420 : look a sticker bak to your computer)

example : type 4236-Y33xxxxxxx give you 4235Y33 )

<key>DeviceProperties</key>
<string>450000000100000001000000390000000100000002010c00d041030a000000000101060000197fff0400160000006200750069006c0074002d0069006e0000000500000001...</string>

in <key>SystemParameters</key>
use Property List Editor to edit the file

#38
Tetonne

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Today I've made a display override for my HD+ Panel (1600x900) based on MacbookPro9,1(DisplayVendorID-610/DisplayProductID-9cc7) and named it Lenovo LCD.

The display profile default is warmer using this file and I have added some extra resolution choices in scaled mode.


Just unzip it and copy entire DisplayVendorID-30e4 folder to:

/System/Library/Displays/Overrides/

spdisplays_display Fixer.app.dmg to create yours

#39
Kogen Mantis

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Device Properties injected :
in terminal

ioreg -lw0 -p IODeviceTree -n efi -r -x | grep device-properties | sed 's/.*<//;s/>.*//;'

save the digit in text.app

for example :

450000000100000001000000390000000100000002010c00d041030a000000000101060000197fff0400160000006200750069006c0074002d0069006e0000000500000001

in

config.plist add


<key>StringInjector</key>
<
string>Yes</string>
<
key>DeviceProperties</key>
<
string>450000000100000001000000390000000100000002010c00d041030a000000000101060000197fff0400160000006200750069006c0074002d0069006e0000000500000001</string>



back to clover 1050 cos with 1090 i got that :

Yes I'm using Clover r1062 cause latest builds broke cpu detection (thus I get fuzzy sound) and graphics are messed up.
BTW1: what is the DeviceProperities string injection good for?
BTW2: whats your full serial number and hows is your CPU detected in 1050? (Is it 2.6GHz or 2.59GHz)

spdisplays_display Fixer.app.dmg to create yours

Nice little app for beginners that just want to add the "Display LCD" for the unknown panel. Thanks for bringing this up.

#40
Kogen Mantis

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As pointed out in private message from Tetonne I have notice that iMessage is not working for our HacBooks and I think the key to resolve that issue is:
1. Ethernet binding to en0 (first network device)
2. Proper MLB serial number (17 digits)

I have enabled and disabled my iMessage account few times to check if its working permanently... and all just works :)





Also tagged with one or more of these keywords: UEFI, ThinkPad, T420, Lenovo, Clover


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