Displaylink not working after upgrade Catalina 10.15.4
 

Hi,
I have a Macbook Air that ran great with two screens using the Displaylink. After I upgraded my mac - yesterday - the external screens stopped working. I upgraded the displaylink driver to the latest BETA version, but still not working. I read through all your support docs. The install looked like it loaded cleanly, with no error messages. However, when I checked to see if the DisplayLink extension was enabled, it wasn't even there. I tried a few times to uninstall, install, reboot, etc. But it doesn't work/ and no extension. I need my two screen for website design. Any help would be appreciated. I'm not a coder, or software engineer, so be gentle. Thanks in advance.
Pete

Similar Problem
 

After upgrading to Catalina 10.15.4 (from 10.15.3) my DisplayLink monitor stopped working on my MacMini.

I read stuff here. I checked that the extension was still installed. I checked that it had permission to read the display. I rebooted. I uninstalled the Beta-version driver and reverted to the Release-version driver. I checked everything again. DisplayLink monitor remained blank.

Same monitor, same software on my MacBook: works fine.

Then I followed the directions here to report an issue. Downloaded the report tool, and ran it. Then I realized that the DisplayLink monitor was still plugged into my MacBook, so I reconnected it to the mini. It worked.

Thats right — the only thing that worked was running the reporting tool (while the DisplayLink monitor was not connected). Maybe it kicked the USB bus somehow? Very strange.

Hello PilotPete,
Could you tell us what exactly is the DisplayLink device you are working with?
Also I have to ask you to go through the steps described in https://support.displaylink.com/know...to-displaylink as we need to run additional analysis of th logfiles gathered from your PC. You can later attach the ZIP file to your post here.

Best regards,
Katarzyna

I'm using the D6000 Dell Universal Dock. I attached two zip files for you. Also, if it helps, my dock is no longer charging my laptop. When connected the top menu shows the adapter connected, but not charging. All other devices attached to the D6000 seem to be working properly: ethernet, keyboard, speakers, usb drive. Again, the day prior to me upgrading the mac OS, everything worked properly and I was able to work on my website. After I upgraded, my two external screens; Samsung and an Acer, stopped working.

Thanks,
Pete

Hi,

I'm facing the same problem! I was still running Mojave on my MacBook Pro 13 2019 when my setup with the D6000 Dell Universal Dock and two Dell P22h19h monitors worked perfectly. Yesterday I had Catalina 10.15.4 installed and nothing seems to work anymore. I have also tried installing every beta and non beta versions available. Despite all efforts, my MBP screen kept flickering non stop after each installation when connected to the dock. I have checked kernel extension and screen recording settings and they're both enabled. I would really appreciate some help!

Thanks!
Pedro

Sorry typo - After I upgraded everything stopped working!

The Fix That Worked For Me
 

So I did more research on the Apple Forum and found reseting the SMC fixed the problem. I hope this helps everyone.



Notebook computers with the T2 chip
Before resetting the SMC, try these steps:
1. Shut down your Mac.
2. Press and hold the power button for 10 seconds, then release the button.
3. Wait a few seconds, then press the power button to turn on your Mac.
If the issue persists, follow these steps to reset the SMC:
1. Shut down your Mac.
2. On your built-in keyboard, press and hold all of the following keys. Your Mac might turn on.
• Control on the left side of your keyboard
• Option (Alt) on the left side of your keyboard
• Shift on the right side of your keyboard
3. Keep holding all three keys for 7 seconds, then press and hold the power button as well. If your Mac is on, it will turn off as you hold the keys.
4. Keep holding all four keys for another 7 seconds, then release them.
5. Wait a few seconds, then press the power button to turn on your Mac.

SMC reset solved my problem as well!
 

@PilotPete, thank you so much! I tried the first steps before resetting the SMC and I managed to get one of my external monitors running. Resetting the SMC solved the problem for both!

Best regards,
Pedro

Hello,

@PilotPete and @Pedro Pessôa, other solution to your situation would be to upgrade the dock's firmware but I am glad you were both able to get your devices working!

Best regards,
Katarzyna

My fix doesn't work anymore. How do I upgrade my firmware?

Hi,

PilotPete, to upgrade the firmware you have to have Windows computer. As the files provided by the manufacturer can only be used with that operating system.
The file is available at: https://www.dell.com/support/home/uk...-d6000/drivers

1. When you do the update make sure you do not have anything plugged in to the dock.
2. Connect the dock to machine running Windows and run the file downloaded from the website.
3. Follow the wizard and once this has completed you can connect your dock to your Mac.

Also double-check if you have Supplemental Update for your macOS available, if yes then please make sure to apply it.

Best regards,
Katarzyna

I'm having the same issue - using the beta software which used to work really well and now nothing seems to help. I've uninstalled and reinstalled, then restarted etc.

display link fixed by targus
 

Hi Guys, I was having same problem, then I google and found that Targus online forum has got fix for it. Worked for me.

https://us.targus.com/blogs/discover...catalina-10-15

how to upgrade displaylink firmware with a mac
 

Hi,
Is there any instructions explaining how to upgrade the displaylink firmware using a mac?

Thanks in advance,

Pete

Hello PilotPete,

Unfortunately there is no such possibility to upgrade firmware while using the MacOS machine.

Firmware update can be only done while using the Windows machine. In order to do so, you will need to plug in your D6000 to the Windows laptop and download -> install firmware upgrade.

Please remember to have only the dock plugged in, without any monitors/usb devices plugged in to the dock.

Afterwards, you will be able to connect the D6000 to your MacOS laptop.

Kind regards,
Jakub