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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

22-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

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:

  • 10.9.x  Mavericks
  • 10.10.x Yosemite

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) - Custom version of 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. 
  • 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. Also has Manwe150's fix/additions for dock ports. Credit and thanks to: vladichimescu
  • 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.

​10.*-Chameleon - extra patched kexts for use with Chameleon 

  • AppleIntelCPUPM.kext (patched 10.8.5 and 10.9.3) - not really necessary to install/replace with clover since it does the patching. Optional Install in /S/L/E for Chameleon compatibility.

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:

- Most defaults settings will work - but make sure SATA is set to AHCI mode and disable VT-d in the Virtualization option.

- Disable Nvidia/Optimus (use 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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#281
fdandy006

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One other thing I have noticed.  If I boot up with the a monitor connected via vga cable I can run external screen fine.  If I boot up without it plugged in and plug it in later I cannot get it to come up.  Is this normal?

 

Cheers



#282
brawson36

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got better trackpad by rolling back to original voodoops2 kext. now im wondering how to run my lenovo display AND displayport to hdmi monitor as extended displays. 



#283
fdandy006

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Is there anyway to not have 'sleep'.  Ie - when I close the lid on the laptop - I just want it to stay on and not go to sleep mode.

 

I found the no sleep app, however the app install seems to fail. Its version 1.33.

I've found about 20% of the apps I try to install fail at the very end but seem to be half installed - anyone else experience this?

 

ie - no sleep installs but reports failed - fails when trying to update system extension.  when I try to launch it says 'Kernal Extension is not loaded'



#284
tluck

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@brawson36 and @fdandy006 - displays. the config.plist (or AppleSNBGraphicsFB.kext from the bundle) is configured and/or patched to provide 4 display ports

1) LCD

2) HDMI (DisplayPort)

3) DVI (on a Docking station)

4) VGA (on left side)

 

i can connect a DisplayPort cable to my HP monitor. Or I use a DisplayPort-to-HDMI adapter + HDMI cable to connect to my BluRay or HDMI TV. if i connected to a VGA monitor, i have to sleep/wake or reboot to see the device. Some VGA devices failed (like some overhead projectors) so I bought a DisplayPort to VGA adapter that is more consistent.

 

if connected with an external monitor, then closing the lid will not sleep. if nothing is connected then it sleeps on close. I dont know how to change that ...  you maybe able to remove the LID device from the DSDT? never tried the nosleep app? 

 

the latest voodooPS2 (v1.8.4 from rehabman) does seem to have have some gestures support as far as i know - i see support in the control panel for trackpad? i especially like the 2 finger glide/scroll. what is the version and where did you get the "original" VoodooPS2 that you prefer?



#285
brawson36

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@tluck

EDIT: could it be that my system definition is 8,3 instead of 8,1? If so, how would i go about changing this definition?

EDIT: changing definition from 8,3 to 8,1 in clover bootloader/options/smbios worked, but i have to change the definition every time. anyway to keep this permanent? 

 

 

As far as the track pad, I noticed that in the 1888 pack, the tracking would be sometimes inconsistent and even turn off when i accidentally hit an unsupported key on the keyboard (f1-f12). So I went on the original install I made using the first posts instructions, looked in efi/clover/kexts and took the voodoops2.kext and brought it over to my main install. put it in my extra folder ran ihack and the darn thing worked like a charm. 

 

accurate tracking

no ghost scrolling

2 finger scroll x and y

4 finger swipe for desktop, all open apps, and switch to dashboard



#286
fdandy006

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@brawson36 and @fdandy006 - displays. the config.plist (or AppleSNBGraphicsFB.kext from the bundle) is configured and/or patched to provide 4 display ports

1) LCD

2) HDMI (DisplayPort)

3) DVI (on a Docking station)

4) VGA (on left side)

 

i can connect a DisplayPort cable to my HP monitor. Or I use a DisplayPort-to-HDMI adapter + HDMI cable to connect to my BluRay or HDMI TV. if i connected to a VGA monitor, i have to sleep/wake or reboot to see the device. Some VGA devices failed (like some overhead projectors) so I bought a DisplayPort to VGA adapter that is more consistent.

 

if connected with an external monitor, then closing the lid will not sleep. if nothing is connected then it sleeps on close. I dont know how to change that ...  you maybe able to remove the LID device from the DSDT? never tried the nosleep app? 

 

the latest voodooPS2 (v1.8.4 from rehabman) does seem to have have some gestures support as far as i know - i see support in the control panel for trackpad? i especially like the 2 finger glide/scroll. what is the version and where did you get the "original" VoodooPS2 that you prefer?

Thanks tluck - so it looks like the vga port is live only if I boot with a monitor plugged in.  If I boot without the cable in, then insert it later - it doesn't find the monitor?

Is there a way to force initialisation once booted?

 

can't seem to find the reference in config.plist?



#287
fdandy006

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@tluck

EDIT: could it be that my system definition is 8,3 instead of 8,1? If so, how would i go about changing this definition?

EDIT: changing definition from 8,3 to 8,1 in clover bootloader/options/smbios worked, but i have to change the definition every time. anyway to keep this permanent? 

 

 

As far as the track pad, I noticed that in the 1888 pack, the tracking would be sometimes inconsistent and even turn off when i accidentally hit an unsupported key on the keyboard (f1-f12). So I went on the original install I made using the first posts instructions, looked in efi/clover/kexts and took the voodoops2.kext and brought it over to my main install. put it in my extra folder ran ihack and the darn thing worked like a charm. 

 

accurate tracking

no ghost scrolling

2 finger scroll x and y

4 finger swipe for desktop, all open apps, and switch to dashboard

Hey Brawson - same question as tluck.  Can you link the kext you use for 4 finger scroll.  I tried rehabmans but it seems to be the same as I already have.

 

Cheers



#288
tluck

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@brawson36

seems like the PS2 controller you are talking about came from using Kogen's Clover_v2_r1625.pkg bundle - if so then that is VoodooPS2 v1.8.2 (just an slightly older version)? ...  cool.  that one works better that's good.

 

if you can run this command line:

 

kextstat | grep -v apple 

 

and post the output -  that would be helpful.

 

thanks.



#289
tluck

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@fdandy006

 

- sleep/wake will (sometimes) bring VGA visible without reboot.
- in the OEM config.plist, i patch the kext SNBGraphicsFB to replace the 4th buffer with VGA. sometimes i could not get it to recognize the VGA device. so i bought a displayport to VGA adapter - works a lot a better.


@honeywell - looks like clover has more controls to help with speed and heat

 

found a lot more info about clover options here

 

 

PLimitDict
<key>PLimitDict</key>
<string>1</string>

Limits the maximal CPU frequency.

  • 0 - No limit.
  • 1 - Reduce frequency by one step
  • 2 - Reduce frequency by two steps

Example: A Core2Duo T8300 with 2400 MHz operates at a maximal frequency of 2000 MHz when limited by two steps. This parameter might be used to reduce heat in mobile systems.



#290
honeywell

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@fdandy006

 

- sleep/wake will (sometimes) bring VGA visible without reboot.
- in the OEM config.plist, i patch the kext SNBGraphicsFB to replace the 4th buffer with VGA. sometimes i could not get it to recognize the VGA device. so i bought a displayport to VGA adapter - works a lot a better.


@honeywell - looks like clover has more controls to help with speed and heat

 

found a lot more info about clover options here

 

 

PLimitDict
<key>PLimitDict</key>
<string>1</string>

Limits the maximal CPU frequency.

  • 0 - No limit.
  • 1 - Reduce frequency by one step
  • 2 - Reduce frequency by two steps

Example: A Core2Duo T8300 with 2400 MHz operates at a maximal frequency of 2000 MHz when limited by two steps. This parameter might be used to reduce heat in mobile systems.

Awesome! Keep up the good work with Clover. I'm back on Chameleon due to sleep and trackpad and display glitches, but I'm still interested in switching back to Clover when these issues get better!



#291
fdandy006

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Thanks Tluck - I will try a display port to vga adapter too (mainly to use on a projector - lets see how it goes).

 

I think I have most things running well now.  I'm not using sleep as yet as its a bit buggy and I've had some of the issues posted earlier on (fast blinking power, losing mouse on wake up etc) so am using 'No Sleep' app so I can close the lid and walk around without the laptop going to sleep.

 

The only other issue is 'Shut down'.  Sometimes when I click shutdown it kinda hangs and if I hit the power button briefly is somehow goes back to login screen.

Sometimes it looks like its shut down but is actually still on (fan still running and I can see bluetooth light on).

 

So sometimes I have to hold power button and do a dirty shutdown or pull battery if it is kinda stuck in this non shut down state.

 

Will do some research and see if anyone else has this issue. 

 

EDIT:  Ok looks like a fixed it with a patched dsdt.dsl.

 

I patched it with the following which has a small update to the code in the dsdt editor pack.

It now does a good shutdown albeit takes a bit of time (longer to shutdown then to startup? :)

# Change method _PTS where Arg0 is 0x05 (shutdown)
#
into method label _PTS code_regex (If\s*\(LEqual\s*\(Arg0,\s*0x05\)\)\s*\n\s*\{\s*\n)(?:[^\n\}]+\n)+(\s*\}) replace_matched
begin
%1
            Store (Zero, SLPE)\n
            Sleep (0x10)\n
%2
end;
into method label \_PTS code_regex (If\s*\(LEqual\s*\(Arg0,\s*0x05\)\)\s*\n\s*\{\s*\n)(?:[^\n\}]+\n)+(\s*\}) replace_matched
begin
%1
            Store (Zero, SLPE)\n
            Sleep (0x10)\n
%2
end;
into definitionblock code_regex . code_regex_not OperationRegion\s*\(PMRS insert
begin
OperationRegion (PMRS, SystemIO, 0x0430, One)\n
Field (PMRS, ByteAcc, NoLock, Preserve)\n
{\n
        ,   4, \n
    SLPE,   1\n
}
end


#292
tluck

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@fdandy006 - cool. yeah i was getting the same thing from time to time. shutdown would shut down OSX but not always power the system all the way down. either held down power button for 5-10 seconds or was doing the battery pull thing. 

 

so i merged the shutdown stuff above into my dsdt (and removed some extra WMI stuff while i was at it). will test a day or 2 and then repost a new clover bundle. seems to shutdown better.

 

i moved up to Clover b1914 and changed a parameter in OEM config.plist - set InjectClockID to false. things seems wake from sleep a tad faster after sleep and maybe that will help with loss of trackpad with VoodooPS2 using Clover. 



#293
fdandy006

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ok - I've played with the shutdown further and after the updated code above still noticed one time when I had the issue.  Going on a hunch and seeing the bluetooth light on when it doesn't power off, I've resumed testing shutdown with Bluetooth disabled in bios.  So far it seems to power off completely (5 of 5 so far) so will keep testing.
 
If it does happen to be the bluetooth keeping it alive - that will be the next thing to nut out...
 
ok - back to the four ports, lcd, hdmi, dvi and vga.
 
I'm pretty sure I have the right kext loaded and have the code in my config.plist:

 

<key>Comment</key>
<string>Replace 4th port with VGA</string>
<key>Debug</key>
<false/>
<key>KextsToPatch</key>
<array>
<dict>
<key>Find</key>
<data>
AQIEABAHAAAQBwAABQMAAAIAAAAwAAAAAgUAAAAEAAAH
AAAAAwQAAAAEAAAJAAAABAYAAAAEAAAJAAAA
</data>
<key>Name</key>
<string>AppleIntelSNBGraphicsFB</string>
<key>Replace</key>
<data>
AQIEABAHAAAQBwAABQMAAAIAAAAwAAAAAgUAAAAEAAAH
AAAAAwQAAAAEAAAJAAAABgIAABAAAAAJAAAA
</data>
</dict>
</array>
 
So VGA port works - but finding it hard to get DVI off the dock to work.  Any ideas?


#294
tluck

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@fdandy006 - 

interesting about bluetooth

in case you havent done this - there is a way to turn it off from OSX if you modify the vendor ID to match in Info.plist in /System/Library/Extensions/IOBluetoothFamily.kext/Contents/PlugIns/BroadcomBluetoothHCIControllerUSBTransport.kext/Contents - change 8532 to 8575.

 

DVI -  i could not connect to my monitor from the DVI on the dock. (i am pretty sure at one point this worked???).  i tried the both the patched and the original kext without the VGA patch. the Display port on the dock works. 



#295
fdandy006

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@fdandy006 - 

interesting about bluetooth

in case you havent done this - there is a way to turn it off from OSX if you modify the vendor ID to match in Info.plist in /System/Library/Extensions/IOBluetoothFamily.kext/Contents/PlugIns/BroadcomBluetoothHCIControllerUSBTransport.kext/Contents - change 8532 to 8575.

 

DVI -  i could not connect to my monitor from the DVI on the dock. (i am pretty sure at one point this worked???).  i tried the both the patched and the original kext without the VGA patch. the Display port on the dock works. 

Will try to change from 8532 to 8575.  Can you edit in place - didn't have permissions to edit?



#296
tluck

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@fdandy006

 

will not turn off bluetooth the same way windows or bios does. (light stays on)

 

yes - you can edit in place 

 

cd /System/Library/Extensions/IOBluetoothFamily.kext/Contents/PlugIns/BroadcomBluetoothHCIControllerUSBTransport.kext/Contents

sudo cp Info.plist Info-orig.plist

sudo vi Info.plist

    find 8532 on line 525 - change to 8575 

sudo touch /System/Library/Extensions



#297
fdandy006

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Update on the Shutdown.  Still getting bad shutdowns so not sure the script above has made it any better.

Sleep also is very intermittent with some devices (like mouse) not working after coming back from sleep.

 

Time for more research. :)



#298
tluck

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@fdandy006 - well i hope you can find something! i am 99% sure these are clover related issues - i just dont have any ideas. if i boot the same disk with chameleon it does not lose the keyboard/trackpad randomly. shutdown is clean too. i have a theory its related to voodoops2 but have not done extensive testing using older kexts.



#299
Tetonne

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1928 installed here

everything ok here



#300
fdandy006

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Is there a trick to upgrading to the latest clover with my settings intact?

 

I tried to install 1928 but the boot loader is a blue screen with black dots for the selection icons.

 

I then copied my oem folder across but it didn't seem to take it?







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


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