DisplayLink Forum - [Solved] New MacOS Catalina breaks DisplayLink

DisplayLink Forum (https://www.displaylink.org/forum/index.php)

- Mac Software (https://www.displaylink.org/forum/forumdisplay.php?f=30)

- - [Solved] New MacOS Catalina breaks DisplayLink (https://www.displaylink.org/forum/showthread.php?t=66641)

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

Quote:

Originally Posted by ElKekoTopo (Post 88693)

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.

Quote:

Originally Posted by ElKekoTopo (Post 88697)

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

Quote:

Originally Posted by Swigs (Post 88692)

Hi,

I followed the above suggestions, but everything is still not working. I tried uninstalling and re-installing beta driver, trying to install an older driver as suggested in some of the posts, and the kextcache command didn't seem to do anything other than below:

This is the output of the kextcache -I /Volumes/MyDisk command (I renamed my disk to MyDisk for simplicity):

Error returned: <error:0x1076e5060> {count = 1, transaction: 0, voucher = 0x0, contents = "XPCErrorDescription" => <string:0x1076e51c8> { length = 18, contents = "Connection invalid" }
}
KernelCache ID: D5B91AEB124007B9951B6D7FB9F9AEF1

Any further suggestions?

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

Quote:

Originally Posted by silverscreen (Post 88686)

I did a couple of uninstall / installs with 5.2.1 beta 2. Mirror displays is unchecked. AirPlay Display says only off in the select list. I see the Air Play icon and that also says off.

I see the two displays extended (directly connected) and the third (DisplayLink) as mirror. No option to extend the DisplayLink monitor.

I have the following setup: 1-2-3. Where 1 is the display link and 2 and 3 are connected to the Mac Mini. Playing around on the arrangement tab:

When the menubar is on 1, then all displays are extended.
When the menubar is on 2, then 1 is a mirror of 2.
When the menubar is on 3, then 1 is a mirror of 3.

I also noticed that I can move my mouse cursor around on the mirrored screen, like it's a actual extended display, but I cannot click on anything! I want the menubar on 2 because this one is directly on front of me.

Any idea?

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

Quote:

Originally Posted by lspintzyk (Post 88667)

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

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:

Code:

kextcache -i /Volumes/Local

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.

Code:

reboot

After it booted back up, I opened up terminal again.

Code:

kextcache | grep DisplayLink

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

Quote:

Originally Posted by steelvoltage (Post 88705)

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:

Code:

kextcache -i /Volumes/Local

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.

Code:

reboot

After it booted back up, I opened up terminal again.

Code:

kextcache | grep DisplayLink

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!