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Latitude 3400: USB and Trackpad problems in Big Sur


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I lately got hold of a brand new Dell Latitude 3400 so I went installing  Big Sur.

It went surprisingly easy, and I can boot (from USBstick  OC 0.63 )   into a login screen Big Sur.

 

But there are, of course,  problems:  I'm stuck in here ( see picture )  .

 

Two things (so far)  are not working: 

 

1) trackpad not working 

2) USB is not working at al , so I can't connect a USB-mouse :-(

 

So I am stuck here... ( can't do Keyboard setup Assistent) 

 

Question: 

is there anybody out there who has a working mousepad with Big Sur on Latitude 3400 ??   And if yes...  How??

 

Greetz.

 

Tanya.

 

latitude3400_bigSUR.jpg

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updated to OC 0.64  and tried a  cheapo  USB3 to HDMI ( fresco logic, ali-exprss)   beside the buildin HDMI and USB-c to HDMI Works!!  I can drive 4 screens now with the Latitude 3400 ( 3 ex

ALC3204 = ALC236 Try layoutid 3, 11, or 54 You currently have set it to 1 As for Touchpad, you need to add a satellite kext besides the VoodooI2C. Most likely you need VoodooHID. 

itlwm.kext or  Airportitlwm.kext, not both. If itlwm.kext, you need to use Heliport.app to configure settings For Bluetooth, add IntelBluetoothFirmware + IntelBluetoothInjector Did you add V

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Hello,

 

Moving on!!   USB is working,

SSDT-RHUB.aml  did the trick!!   

 

So:   

Working: 

- integrated keyboard

- accelerated Video  Inter UHD 620

- ethernet RTL8111

- built in webcam 

 

Not working: 

- audio ( is: Realtek ALC3204 ) 

- trackpad

 

 

 

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ALC3204 = ALC236

Try layoutid 3, 11, or 54

You currently have set it to 1

As for Touchpad, you need to add a satellite kext besides the VoodooI2C. Most likely you need VoodooHID. 

You should add SMCBatteryManager.kext as well for battery status and maybe Sinetek-rtsx.kext for SD Card reader if it has it.

Post IOReg file with IORegistryExplorer.app v2.1 for better understanding

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Really moving on: 

 

Sound:  internal speakers &  headphone output working:    alcID=15 did the trick .

WIFI:       itlwm.kext  &   Airportitlwm.kext   ( works with unencrypted SSID en wep SSID )

 

so working:

- integrated keyboard

- accelerated Video  Intel UHD 620

- ethernet RTL8111

- built in webcam 

-sound ALC3204 ( seems to be same as: ALC236)   

-build in microphone

-bluetooth

-WiFi  (!)  Intel AC 9560    ( itlwm.kext   with unencrypted SSID)

 

not working

- trackpad

- HDMI for external monitor 

  

latitude3400_bigSUR_2.jpg

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itlwm.kext or  Airportitlwm.kext, not both. If itlwm.kext, you need to use Heliport.app to configure settings

For Bluetooth, add IntelBluetoothFirmware + IntelBluetoothInjector

Did you add VoodooI2CHID.kext as suggested for the touchpad?

 Please post IOReg file as suggested for further assistance

For better screenshot, use Alt+Shift+3 or Alt+Shift+4 to select Window to capture

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Hallo,

I guess you 're right:   Now the serial number is displayed and I have a MacBook Pro 16,1: see picture :

Screen Shot 2020-12-02 at 21.34.59.png

 

I tried these kexts  but still no Trackpad. 

Screen Shot 2020-12-02 at 21.38.20.png

 

config.plist.zip EFI_latitude_mostWoriking_2dec.zip

 

 

Still moving on:   I used a different SMBIOS. 

from this Reddit post, it says:  "If you still can't get it to work, try a different SMBIOS. I used MacBookPro15,4 and 16,3 and it works perfectly." so I tried  15.4  and look: build in HDMI port still isn't working but  USB-c to HDMI starts working !!  

dell_3400_2_screen.jpg

 

Still not working: Trackpad + build in HDMI port. 

but working on  the post "Fix HDMI port" :  it's a bit complicated.

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