[Solved] New MacOS Catalina breaks DisplayLink

Swigs · 10-15-2019, 02:47 PM

Quote:

Originally Posted by lspintzyk

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)

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

warlockuk · 10-16-2019, 08:59 AM

I had an issue where after updating to Catalina (dumb idea on first release

) 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.

lspintzyk · 10-16-2019, 11:34 AM

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 ..."

Swigs · 10-16-2019, 04:55 PM

Quote:

Originally Posted by lspintzyk

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.

mejasonca · 10-17-2019, 07:39 PM

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.

garage_logician · 10-17-2019, 08:39 PM

Quote:

Originally Posted by lspintzyk

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 ..."

I can't download it either. :-(

ChristianP · 10-18-2019, 01:39 PM

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.

mattd0n0van · 10-18-2019, 05:12 PM

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?

lspintzyk · 10-21-2019, 05:09 AM

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.

mhaggstrom · 10-21-2019, 11:24 AM

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.

10-17-2019, 07:39 PM	#5
mejasonca Junior Member Join Date: Oct 2019 Posts: 1	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. Last edited by mejasonca; 10-17-2019 at 07:47 PM.

10-18-2019, 01:39 PM	#7
ChristianP Senior Member Join Date: Apr 2011 Posts: 280	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. Last edited by ChristianP; 10-18-2019 at 01:45 PM.

10-18-2019, 05:12 PM	#8
mattd0n0van Junior Member Join Date: Oct 2019 Posts: 1	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?

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10-16-2019, 08:59 AM	#2
warlockuk Junior Member Join Date: Aug 2018 Posts: 27	I had an issue where after updating to Catalina (dumb idea on first release ) 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.

10-21-2019, 05:09 AM	#9
lspintzyk Member Join Date: Feb 2013 Posts: 65	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.