I also tired 5.1.1 it does not working. I tried https://support.displaylink.com/know...lay-is-working and it does not working.

I have DisplayLinkUserAgent in Accessibility but don't have it in Screen Recording.
In terminal on the output I get: 'No such file or directory'
The display link extension is loaded.

DisplayLinkDriver:

Wersja: 5.2 (48)
Ostatnia modyfikacja: 09.10.2019, 17:54
Identyfikator pakietu: com.displaylink.driver.DisplayLinkDriver
Poświadczona: Tak
Wczytane: Tak
Łańcuch tekstowy informacji: DisplayLink Driver 5.2.48 - Copyright © 2003 - 2019 DisplayLink (UK) Ltd. All rights reserved.
Uzyskany od: Zidentyfikowany deweloper
Rodzaj: Intel
Architektury: x86_64
64 bity (Intel): Tak
Lokalizacja: /Library/Extensions/DisplayLinkDriver.kext
Wersja rozszerzenia: 5.2 (48)
Załadowane pod adres: 18446743521879446000
Możliwe do wczytania: Tak
Zależności: Spełnione
Podpisany przez: Developer ID Application: DisplayLink Corp (73YQY62QM3), Developer ID Certification Authority, Apple Root CA

ElKekoTopo, please run
kextcache -i "/Volumes/Macintosh HD"
You had space in volume name, hence you need it in quote.

I followed the above suggestions, but everything is still not working. I renamed my disk to MyDisk. Idk what else I can do.

ElKekoTopo, Can you confirm that after kextcache command and reboot,
the output of kextstat | grep DisplayLink is empty?

Please also attach logs using that tool.
https://www.displaylink.com/downloads/file?d=66

Did you executed that command in macOS recovery mode?
After reboot what
kextstat | grep DisplayLink says?

Try reset screen preferences:
sudo rm /Library/Preferences/com.apple.windowserver.plist
rm /Users/$USER/Library/Preferences/ByHost/com.apple.windowserver.*

If does not help, please gather logs using that tool and raise bug here:
https://support.displaylink.com/
You can gather logs using that tool:
https://www.displaylink.com/downloads/file?d=66

The second link fixed this for me. Thank you!

I was able to fix the issue this morning.

Steps that I took:

Uninstalled the displaylink driver.
Shutdown my mac and entered recovery mode.
Opened up the terminal and ran:
Note: Local is the name of my disk. Yours may vary.
The command returned a string/id/guid (not sure what it entails), but there was no error message.
After it booted back up, I opened up terminal again.
The grep returned nothing, which now I knew the driver was gone completely. Grep is a regular expression search, meaning it returning nothing is what we want here as we cleared the cache.

I installed the beta driver and it rebooted.

Afterward, success!

I tried above solution, after it booted back up, I opened up terminal again. I type kextcache | grep DisplayLink and that's what I get, idk if this is good or not (or should I type that code in recovery mode?). I attached my output logs.

EDIT: Added screenshot of kextstat | grep DisplayLink. It returned nothing so the driver was gone?

EDIT2: Added screenshot of kextstat | grep DisplayLink in recovery mode because I don't knot where I should type this. It retuned command not found.

:-) Partial Solution, :-( temporary success
 

thanks for your post steelvoltage, it gave me some progress towards a solution



this solution got output to my 2 DisplayLink driven external monitors, but required some extra work in the system preferences.
reboot broke it all again

Steps:
1. uninstalled DisplayLink driver
2. rebooted and checked the kextcache to verify it was cleared and verified DisplayLink software no longer installed
3. reinstalled DisplayLink driver v5.2(15)
4. rebooted

Results: 2 external DisplayLink monitors are recognized by the OS (cursor displays on each) but only shows black screen. app windows moved to the monitors do not display, nor does the desktop background image

5. Opened System/Preferences/Displays
Selected: Arrangement Mirror Displays
all external monitors display everything perfectly
deselecting 'mirror...' and the DL monitors go back to black, but clicking on each monitor in the arrangement display shows the thin red line indicating another monitor adjacent to the main display
Selected each of the external monitors in turn and selected "Optimize for display"
Unselected 'Mirror Displays" and all are working as expected

6. Rebooting computer - external DisplayLink monitors return to black w/ cursor state.

any other thoughts or suggestions welcome ... I'll try anything at this point. this is my work computer.

Thanks, All!

Yes I did, I re-did the command so you could see. I also entered the kextstat | grep DisplayLink command and it gave the output in the screenshot. Please see the attached screenshot in recovery mode for both commands.

Not sure what else to do.

Same here !
We still wait for a working solution Displaylink !

Please delete [Solved] from the post suject ! :mad:

Please install beta 5.2.1 driver
https://www.displaylink.com/downloads/file?id=1433

Hi swigs,
I have found other solution, however I am not sure how reliable it is.
Instructions are:
1. Uninstall displaylink driver.
2. Enter macOS Recovery mode
3. In terminal enter command:
csrutil disable
4. Boot to normal macOS and enter command in terminal:
sudo touch /Library/Extensions
and reboot
5. Boot to normal macOS. At this stage kextstat | grep DisplayLink should be empty
6. Enter command in terminal
sudo csrutil clear
This will enable system integrity protection disabled in step 2.

DL 5.2 fix after sleep/disconnect on Catalina
 

Macbook Air 2018, DisplayLink v 5.2 installed prior to upgrade to Catalina w. ThinkPad dock where Screen Recording has been allowed and working as expected after boot.

Issue: After sleep or disconnect from dock displays wither show black background w. mouse or screen(s) not waking.

Solution (Certified "works on my machine")
1) Disconnect dock
2) Start Activity Monitor, kill DisplayLinkUserAgent and DisplayLinkManager
3) Reconnect dock

That doesn´t solve the Issue, sorry

beta driver install renders external displays inaccessible
 

Per suggestion:
installed 5.2.1 Beta
RESULTS: 2 external monitors driven by DisplayLink software are no longer configurable in Display preferences, they do not show up at all, therefore unable to perform the work around steps previously listed to get output to those monitors.

System Report/Hardware/USB shows the 2 USB Display Adapters, I can't recall exactly but I think this reference used to indicate the make and model of the monitors. that info no longer part of the report.

Processes Status (Activity Monitor/CPU/info)
DisplayLinkManager and DisplayLinkUserAgent both showing large number of faults: 6,291 and 12,583 respectively.

I tried absolutely everything to solve this issue but nothing seemed to work. I didn't have the privacy setting so I couldn't do anything there. I booted into recovery and ran all the commands and pretty much every suggestion in this thread, still nothing worked.

Let's start with my experience. On initial boot, both monitors worked great. As soon as I let the monitors go to sleep, only one would recover from sleep. I finally decided as a workaround I would just set the monitors to never sleep and I would try a few other options. First, I just physically turned off the monitors. I turned them back on and everything still worked. Great. Next I tried putting the mac itself to sleep. It went to sleep and woke fine and both monitors still worked. Next I set up a hot corner to put the monitors to sleep. That also worked. OK, strange, but whatever. Next I set my monitors to sleep at 1 minute, and that tested fine as well. I finally set it back to 3 minutes which is where I originally had it and I haven't had a problem since.

I'm not sure if my experience is similar to others. For instance, when one of my monitors didn't recover from sleep, it simply wasn't listed under displays... but after reboot it was. I've seen others say theirs was still listed, so that seems to be a difference.

TL;DR - I set my my monitor to never sleep and back and that seems to have cured my woes.

Oh, and I'm running 5.2.1 beta 2.

MGI quoted [Please delete [Solved] from the post suject]

would if I could, not forum savvy :-(

Ok I tried everything you Guys post here and still my Mac OS don't give my external display permission to screen recording.

Problems here as well. I just updated to Catalina my Mac Mini (late 2012), installed the new beta drivers and provided the required screen recording authorisation. The DisplayLink screen is correctly recognised by the OS and seems to be active (windows can be moved to there), although it is completely blank (not even the mouse pointer can be seen).

I think the root cause of this problem is the same as posted here. Gives more details of what the issue is and how to work around it:

https://blog.obdev.at/how-kernel-pre...acos-catalina/

Still not working cont.
 

So I went through all the steps above, and kextstat | grep DisplayLink was indeed empty after that. However, when I went back into recovery mode after completing all the above steps to input the kextcache -I /Volumes/MyDisk command, I got a similar output as before as seen in the attached screenshot. And for whatever reason it was no longer recognizing the kextstat | grep DisplayLink command now too..

That is fine, you after exit from recovery mode, you can install DisplayLink 5.2.1beta driver.
It should work at that moment, if not, then please attach logs. (Using that tool https://www.displaylink.com/downloads/file?d=66)

Still not working cont..
 

Yea I did that yesterday and didn't have any success. Please see the attached log files and let me know if you need anything else

I had an issue where after updating to Catalina (dumb idea on first release :D) my monitor on a displaylink-powered dongle was blurry and had a weirdish res being stretched to 1920x1200. (Probably rendering at 1920x1080 and stretching).

Updated to the beta driver. Screen black. Nothing to do but just unplug it.

Today's Catalina update got applied and now the screen works perfectly again - maybe the update process rebuilds something /shrug.

But worth a go for anyone suffering Black Screen Blues.

Hi Swigs, all

In the attachment I had put dl_cache_fix_wizard.command script, that is guiding you in order to fix the problem. Since we need one manual step(going to recovery mode) it can't be fully automatic.

If all will be fine you will be prompted to install displaylink driver with such message:
"System cache integrity is correct. Please install DisplayLink driver ..."

Every time I try to download the file it takes me to the forum login screen for whatever reason and it says I don't have permission to download the attachment? Any way to upload it in another way? Not sure why I'm being restricted.

Same Issue
 

Since the update to Catalina last night, my new MacBook can see my Displaylink monitor, but it is always just a mirror of one of my other directly connected monitors. I have tried everything suggested in this forum with no luck.

I did just figure a work-around of sorts. If the Displaylink monitor is set as the primary monitor (the one with the desktop links), then it no longer mirrors another monitor. Not ideal in my setup, but I can live with it.

I can't download it either. :-(

Here is the correct link to download the script that will guide you through solving the KEXT cache issue:

https://www.displaylink.com/downloads/file?d=262

In case the script is blocked by Gatekeeper (you should see a popup message saying "“dl_cache_fix_wizard.command” can’t be opened because it is from an unidentified developer."),
please open System Preferences->Security &Privacy->General tab and click on "Open anyway" button.

Lost all displaylink use - Macbook Pro after Catalina Patch update
 

I have a 2019 Macbook Pro and am Using the D6000 hub to support dual monitors. I upgraded to Catalina last week and received the black screen issue as well.

After Catalina Update
Issue: Black Screens
Solution: Downloaded Beta 2 and updated Screen Recording Security Settings.

Catalina Patch on 10/16
Issue: Dock is not recognized at all. I am not receiving power or any recognition of signal from the dock.
Troubleshooting: I have uninstalled drivers and reinstalled up to beta3, but still no change.

Anyone have any help?

Please follow that article:
https://support.displaylink.com/know...r-only-one-mon
If problem persist try the solution ChristianP from the post above.

Also please gather logs using that tool (https://www.displaylink.com/downloads/file?d=66) and attache them here.

Fix for monitors not working when upgrading to Catalina
 

In case anyone else has my issue....

My monitors stopped working on my macbook air when I upgraded to Catalina. I followed the instructions here:

https://support.displaylink.com/know...r-only-one-mon

One last step that needed to be done after the above instructions was to go to Security and Privacy in System Preferences. In the General tab at the bottom is a new message I hadn't seen before that read "Some system software was blocked from loading" with an "Allow" button. I clicked that button and saw DisplayLink in the list. I checked the box for it and restarted and my monitors work now.

Still not working.
 

Thanks for all your help Ispintyzk! Once I downloaded the new Catalina update it apparently must have fixed the underlying issue as my DisplayLink now works appropriately as it was previously.

Tried the link. When I accepted terms and conditions this message came up:

"NoSuchKeyThe specified key does not exist.live/downloads/software/f1437_KEXT Cache Update Re-installer Script 0.1.zipFDAACA288A341DDFtD7i1V+nF+PFRnFlEqL+xEqTpD3 hAJ8q6CdxyXoAMRutUIH9stXaO9lVvX/FuZvWAbyFoSFRCAg="

Also: My problem is that the screen is black. As soon as I move my mouse to the screen I can see it. But everything else that I tried to move to the screen (e.g. a window) I can see nothing, except my mouse button. Tried everything that was described in this post, nothing worked for me so far...

Now it is working again after I did the following: I went to monitor managing and there I ticked "synchronise monitors" and the second screen worked again. After I desyncronised again, the monitor worked again as before the update...

Hey ya,

The link is not working.

I also tried everything else mentioned here (also with deinstalling the driver, restarting into boot dooing the kext command).

My screen remains black and i really have no idea what to try else :(

attached are the log files.

I've been trying to get my dual monitor setup to work with my 2018 MacBook Pro and the startech dock since installing Catalina. I've done the uninstall -> boot to recovery -> re-install process a couple times, most recently a few hours ago with Beta 3 of the software.

I'm having no luck, not even seeing the tool in the "Screen Recording" section of my settings.

I've attached the DisplayLink info output. I'd really appreciate any help with this.

Thanks.

DisplayLink not in Screen Recording
 

I am having same problem where DisplayLink is not in the screen recording window.

Yes I have done everything else suggested in the forum - uninstall, clear cache, reinstall i it is loaded etc. Just not in the screen record list....

Any ideas?