Same issue with 5.2.1 and 5.2 on macOS Catalina.

2016 MacBook Pro (non-touchbar) and Dell D6000 with USB-C to USB-A adapter attached to a powered hub.

The issue is fixed for me by uninstalling 5.2(.1) and reverting to 5.1.1

With the old 5.1.1 driver I have both screens available and working the same as it did in Mojave.

Tried lots of things with 5.2 and 5.2.1 to no avail.

reversed to driver 5.1.1, My 4K monitor is now working, but the resolution is off. I can't see the dock, its somewhere below my monitor.. I guess I have to wait for the updated driver..

Reversed to 5.0.1, now everything seems OK on Catalina

I am having the same issue on my Dell 2400: the system sees the monitor--the dock even moves to that window--however, the screen stays black.

Hi.

First of all. There is new macOS DisplayLink 5.2.1 beta 2 driver. Please make sure to have it installed: https://www.displaylink.com/downloads/file?id=1433

Secondly, Can you please follow that instructions? Does any of them helps you?
https://support.displaylink.com/know...ing-permission
https://support.displaylink.com/know...lay-is-working
https://support.displaylink.com/know...-functionality


If you still have issues please gather diagnostic information and attach them in the post.
Please use our support tool:
https://www.displaylink.com/downloads/file?d=66

I would be grateful for output of terminal command:
sudo kextstat | grep DisplayLink

Tried it all, kext file stays unloaded.

42 0 0xffffff7f8275a000 0xb000 0xb000 com.displaylink.driver.DisplayLinkDriver (5.1 (40)) C66FE504-BB12-337C-906A-3A123E9A64B5 <41 13 6 5 3>

Updated driver to the new beta, black screen still the same.

monitor is detected, but goes to sleep 'no input detected'.


output kextstat:
42 0 0xffffff7f8276c000 0xc000 0xc000 com.displaylink.driver.DisplayLinkDriver (5.0 (31)) 4E4C9A34-2960-3AC0-8BB7-861686561DAB <41 13 6 5 3>

ran the information tool, see attachment for details/output.
\

I think I forgot one step. https://support.displaylink.com/know...r-only-one-mon

running the kextcache command in recovery mode. Have done that now, including installing the new version. Kextstat now displays:

174 0 0xffffff7f83de0000 0xb000 0xb000 com.displaylink.driver.DisplayLinkDriver (5.2 (48)) A3EFB07A-5F72-3214-8C15-5F645B87E0CF <114 13 6 5 3>

which says version 5.2 driver. Will be testing tomorrow when I'm back at work.

Everything works fine now :-)

Same here, all fixed. You need to do the uninstall, reboot to recovery, run the kext terminal command and then reboot and install the 5.2.1 beta 2 driver... Takes a few min but worked like a charm.

Note - The d6000 still wont work for me unless I use it with the USB-A adapter, but i suspect that's a Dell firmware and power management issue. I ALWAYS have my screens flash after about 5 min from when I first plug in the D6000. If I am using the USB-A adapter, it all comes back in a second or two, if I am using USB-C, it might come back, but generally the light on the Dell D6000 turns orange and it all just stops working. Switch to USB-A. all good again.