5.2 driver black screen on 10.15 Beta (19A526h)

Zigurd · 08-14-2019, 05:00 PM

With the latest 10.15 Beta (19A526h), I'm back to the condition where I can see a cursor, but nothing else, on the monitor attached via a DisplayLink model UGA-3000.

I tried reinstalling DiaplayLink driver 5.2, and I made sure DisplayLinkUserAgent has permission to record the screen, which is the recommended way of getting the display to not be blank (except for the cursor). I cleared PRAM, too. No luck.

Since I can see the cursor on an otherwise black screen, I suspect it has to do with a permission, as with the screen recording permission.

Any ideas?

Zigurd · 08-20-2019, 03:19 PM

Updated to 10.15 Beta (19A536g) and now I no longer see the cursor on the monitor connected via DisplayLink. Checked the permissions for screen recording. Tried adding the Accessibility permission, too. No joy.

The system thinks the monitor is there. It shows up in the Displays preferences panel in the correct location. If I unplug the Displaylink usb jack the monitor is correctly removed from the displays. However, if I plug it back in it is not added. But the monitor is completely black whether it is connected or not.

Some help or information would be appreciated.

M. Holkamp · 08-26-2019, 07:16 AM

Same issue here.
It seems that this is the same as the problems we had with Mojave last year.

tommiy · 08-26-2019, 09:55 PM

I get the same issue but on 10.14.6 with external thunderbolt monitors with the 5.2 driver. These are not even DisplayLink monitors but the kernel driver appears to take them over some how. MACOS shows the monitor as connected but there is nothing displayed. I reverted to the 5.1 drivers that worked fine. Maybe try that or otherwise its simply DisplayLink again not prepared for the next OS upgrade. Hope the wait is not as long as the previous instance....

M. Holkamp · 08-27-2019, 07:07 AM

Too bad. Just removed 5.2 and reinstalled 5.1.1 but the result is the same.
I did not tried 5.1. May later on today.

To be precise:
I have 2 external monitors.
On of them works, the other stay's black, but i can see the cursor move around this screen.

M. Holkamp · 08-27-2019, 07:31 AM

I solved this in my case:

My monitiors where both connected with a displayport cable.
A closer look at my portrep. learned me that i also have on HDMI connector.
So now i have one on DP and one on HDMI.
Both screens are now working fine.

Zigurd · 08-28-2019, 01:30 AM

Re: solved this in my case:

You said:

My monitiors where both connected with a displayport cable.
A closer look at my portrep. learned me that i also have on HDMI connector.
So now i have one on DP and one on HDMI.
Both screens are now working fine.

My configuration is a one external monitor on my mid-2012 MBP's Mini DisplayPort connector, and another on the DVI connector on a USB 3.0 DisplayLink adapter.

I tried using the 5.1 drivers. No difference in result vs the 5.2 drivers: The monitor on the DisplayLink adapter is black, except for being able to see the cursor. The system knows it's there. Permissions for Accessibility and Screen Recording appear to be set correctly. But no joy.

Any other ideas?

08-14-2019, 05:00 PM	#1
Zigurd Junior Member Join Date: Aug 2019 Posts: 5	5.2 driver black screen on 10.15 Beta (19A526h) With the latest 10.15 Beta (19A526h), I'm back to the condition where I can see a cursor, but nothing else, on the monitor attached via a DisplayLink model UGA-3000. I tried reinstalling DiaplayLink driver 5.2, and I made sure DisplayLinkUserAgent has permission to record the screen, which is the recommended way of getting the display to not be blank (except for the cursor). I cleared PRAM, too. No luck. Since I can see the cursor on an otherwise black screen, I suspect it has to do with a permission, as with the screen recording permission. Any ideas?

08-20-2019, 03:19 PM	#2
Zigurd Junior Member Join Date: Aug 2019 Posts: 5	Update: It gets a little worse Updated to 10.15 Beta (19A536g) and now I no longer see the cursor on the monitor connected via DisplayLink. Checked the permissions for screen recording. Tried adding the Accessibility permission, too. No joy. The system thinks the monitor is there. It shows up in the Displays preferences panel in the correct location. If I unplug the Displaylink usb jack the monitor is correctly removed from the displays. However, if I plug it back in it is not added. But the monitor is completely black whether it is connected or not. Some help or information would be appreciated.

08-27-2019, 07:07 AM	#5
M. Holkamp Junior Member Join Date: Jul 2017 Posts: 6	Too bad. Just removed 5.2 and reinstalled 5.1.1 but the result is the same. I did not tried 5.1. May later on today. To be precise: I have 2 external monitors. On of them works, the other stay's black, but i can see the cursor move around this screen. Last edited by M. Holkamp; 08-27-2019 at 07:11 AM.

08-28-2019, 01:30 AM	#7
Zigurd Junior Member Join Date: Aug 2019 Posts: 5	Tried 5.1 drivers Re: solved this in my case: You said: My monitiors where both connected with a displayport cable. A closer look at my portrep. learned me that i also have on HDMI connector. So now i have one on DP and one on HDMI. Both screens are now working fine. My configuration is a one external monitor on my mid-2012 MBP's Mini DisplayPort connector, and another on the DVI connector on a USB 3.0 DisplayLink adapter. I tried using the 5.1 drivers. No difference in result vs the 5.2 drivers: The monitor on the DisplayLink adapter is black, except for being able to see the cursor. The system knows it's there. Permissions for Accessibility and Screen Recording appear to be set correctly. But no joy. Any other ideas?

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

08-26-2019, 07:16 AM	#3
M. Holkamp Junior Member Join Date: Jul 2017 Posts: 6	Same issue here. It seems that this is the same as the problems we had with Mojave last year.

08-26-2019, 09:55 PM	#4
tommiy Member Join Date: Mar 2018 Posts: 92	I get the same issue but on 10.14.6 with external thunderbolt monitors with the 5.2 driver. These are not even DisplayLink monitors but the kernel driver appears to take them over some how. MACOS shows the monitor as connected but there is nothing displayed. I reverted to the 5.1 drivers that worked fine. Maybe try that or otherwise its simply DisplayLink again not prepared for the next OS upgrade. Hope the wait is not as long as the previous instance....

08-27-2019, 07:31 AM	#6
M. Holkamp Junior Member Join Date: Jul 2017 Posts: 6	I solved this in my case: My monitiors where both connected with a displayport cable. A closer look at my portrep. learned me that i also have on HDMI connector. So now i have one on DP and one on HDMI. Both screens are now working fine.