Big sur 11.1 external Monitor

milkalswe · 12-17-2020, 06:41 PM

Hi guys,

I also belong to the group of users having trouble with BigSur and DisplayLink connected screen. My Mac recognizes that there is a screen but shows it as "No monitor". It works but allows max 1600x1200 (4:3 ratio) which looks pretty bad on full-hd 1920x1080 screen. When i connect the screen directly via HDMI it behaves perfectly well.

My setup:

MacBook Pro 15'' (2018)
macOS 11.1 (20C69)
Targus Dual Video Universal Docking Station USB 3.0 Dockningsstation
DisplayLink Manager 1.2.0 (Build 55.125)
Samsung S24R650FDU
Dell S3220DGF (connected directly to Apple usb-c to usb-a/hdmi dongle due to docking station resolution limit when 2 screens are connected).

I have tried various combinations when connecting through the docking station - one screen, 2 screens, switch cables. No improvement. I have uninstall and installed the newest DisplayLink driver. No improvement.

Just before the upgrade it worked all fine.

Would anyone have an idea?

EDIT: one day, after updating Tuxera to 2020 version things suddenly started working fine - simply magic :-/

rmcig · 12-18-2020, 11:19 PM

I just went through this with a Macbook Air and a Dell D6000 Dock connected over USB 3.1. Everything else plugged into the dock worked fine except for the display. Here are two things I did to get it working:

1. Install the latest DisplayLink software and reboot.
2. In System Preferences > Privacy and Security, you need to grant Screen Recording permissions to Displaylink Manager. Once I did that, the monitor appeared.

I'm not sure if #1 was even necessary, so you might try #2 first.

helixpt · 12-20-2020, 05:53 PM

Same problem after upgrading from 11 to 11.1 on a M1 Mac, reinstalled the driver, both the 1.1 I was using previously and the 1.2, sent a uservoice request to Displaylink, still no return, and the guys from Startech that helped a lot during the first issues I've experienced with M1 Mac this time quit before the problem was fixed.

Hope displaylink uservoice gets back to me and I'll post here the solution.

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12-17-2020, 06:41 PM	#1
milkalswe Junior Member Join Date: Dec 2020 Posts: 1	Bug Sur - Display Link screen recognized as "no monitor" Hi guys, I also belong to the group of users having trouble with BigSur and DisplayLink connected screen. My Mac recognizes that there is a screen but shows it as "No monitor". It works but allows max 1600x1200 (4:3 ratio) which looks pretty bad on full-hd 1920x1080 screen. When i connect the screen directly via HDMI it behaves perfectly well. My setup: MacBook Pro 15'' (2018) macOS 11.1 (20C69) Targus Dual Video Universal Docking Station USB 3.0 Dockningsstation DisplayLink Manager 1.2.0 (Build 55.125) Samsung S24R650FDU Dell S3220DGF (connected directly to Apple usb-c to usb-a/hdmi dongle due to docking station resolution limit when 2 screens are connected). I have tried various combinations when connecting through the docking station - one screen, 2 screens, switch cables. No improvement. I have uninstall and installed the newest DisplayLink driver. No improvement. Just before the upgrade it worked all fine. Would anyone have an idea? EDIT: one day, after updating Tuxera to 2020 version things suddenly started working fine - simply magic :-/ Last edited by milkalswe; 01-09-2021 at 03:46 PM. Reason: Issue solved itself

12-18-2020, 11:19 PM	#2
rmcig Junior Member Join Date: Dec 2020 Posts: 1	Check Screen Recording permissions I just went through this with a Macbook Air and a Dell D6000 Dock connected over USB 3.1. Everything else plugged into the dock worked fine except for the display. Here are two things I did to get it working: 1. Install the latest DisplayLink software and reboot. 2. In System Preferences > Privacy and Security, you need to grant Screen Recording permissions to Displaylink Manager. Once I did that, the monitor appeared. I'm not sure if #1 was even necessary, so you might try #2 first.

12-20-2020, 05:53 PM	#3
helixpt Junior Member Join Date: Dec 2020 Posts: 11	Same problem after upgrading from 11 to 11.1 on a M1 Mac, reinstalled the driver, both the 1.1 I was using previously and the 1.2, sent a uservoice request to Displaylink, still no return, and the guys from Startech that helped a lot during the first issues I've experienced with M1 Mac this time quit before the problem was fixed. Hope displaylink uservoice gets back to me and I'll post here the solution.