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E6440 Catalina : Freeze after wake up from sleep

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Dear all, 


I have installed Catalina on Dell E6440 with integrated intel hd4600, it works quite well except the following:-

 - Laptop freezes few second after wake up from sleep

Specs: Dell Latitude E6440, Bios A23
macOS Version: macOS 10.15 (Catalina)
Clover EFI version : v5070


Appreciate if anyone can assist or guide me on how to troubleshoot it.



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You're using SSDT-EC to create/add a dummy EC device in ACPI but, ideally, you should have just renamed ECDV to EC through Clover.


There are several things to say about your addd-on kexts:

  • USB_injector kext may not be suitable anymore. Instead, use Rehabman's USBInjectAll, after which you may run Hackintool app to generate your system-specific USBPorts kext
  • you're using latest WhateverGreen kext so AppleBacklightFixup is obsolete and should be removed
  • you're using VirtualSMC alongside ACPIBatteryManager and this may be the actual cause of your problem. I'd revert to FakeSMC and its PlugIns if I were you


Thereafter, make sure you disable hibernation and revert to plain old sleep as explained in our FAQ section.


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Dear Herve,


I made the following changes:-

1) renamed ECDV to EC through Clover and remove SSDT-EC.aml

2) remove AppleBacklightFixUp.kext

3) replaced VirtualSMC.kext with FakeSMC.kext

4) USBInjectAll.kext can't detect my USB devices even though I copied in USBPorts.kext generated by HackinTool. USB_injector.kext detects everything nicely, including webcam.


After the above changes, system still freeze as before.


Attached latest debug file.






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What's your hibernation status? please type the following in Terminal

pmset -g
ls -la /var/vm

and post results.

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Below is the result of pmset -g and ls /var/vm :-

pmset -g
System-wide power settings:
Currently in use:
 standbydelaylow      10800
 standby              1
 womp                 0
 hibernatefile        /dev/null
 powernap             0
 gpuswitch            2
 halfdim              1
 networkoversleep     0
 disksleep            0
 standbydelayhigh     86400
 sleep                0
 autopoweroffdelay    28800
 hibernatemode        0
 autopoweroff         1
 ttyskeepawake        1
 displaysleep         15
 highstandbythreshold 50
 lidwake              1
ls -la /var/vm
total 2097152
drwxr-xr-x   3 root  wheel          96 Oct 13 21:49 .
drwxr-xr-x  27 root  wheel         864 Oct 10 19:22 ..
-rw-------   1 root  wheel  1073741824 Oct 14 07:40 kernelcore



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