[Solved] New MacOS Catalina breaks DisplayLink

Swigs · 10-09-2019, 03:36 PM

Hi,

Quote:

Originally Posted by lspintzyk

Great!

You need to follow the article:
https://support.displaylink.com/know...lay-is-working

tl.dr
1. Uninstall DisplayLink driver first
2. go to recovery mode
3. invoke kextcache command as described in that article.

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?

ElKekoTopo · 10-09-2019, 04:19 PM

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

lspintzyk · 10-09-2019, 07:07 PM

Quote:

Originally Posted by ElKekoTopo

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.

ElKekoTopo · 10-09-2019, 07:31 PM

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

lspintzyk · 10-10-2019, 05:10 AM

Quote:

Originally Posted by ElKekoTopo

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

lspintzyk · 10-10-2019, 05:28 AM

Quote:

Originally Posted by Swigs

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?

Swigs · 10-10-2019, 06:28 PM

Quote:

Originally Posted by lspintzyk

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

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.

lspintzyk · 10-11-2019, 10:47 AM

Quote:

Originally Posted by Swigs

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.

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.

23resdf434634trg534t34tgr · 10-11-2019, 12:33 PM

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

gritt · 10-11-2019, 02:08 PM

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.

10-11-2019, 12:33 PM	#9
23resdf434634trg534t34tgr Junior Member Join Date: Oct 2019 Posts: 1	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

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10-11-2019, 02:08 PM	#10
gritt Junior Member Join Date: Oct 2019 Posts: 1	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.