Display Link Stopped working on 3 monitors with M1

zach-h · 05-26-2026, 04:49 PM

Updated to macOS 26.5 overnight, have lost my 2nd monitor. Was running DisplayLink manager 16, updated to 16.1 this morning, no change. I've done all the power cycling and cable swapping in the universe, same result of no 2nd monitor, but I did notice one interesting thing: swapping the DisplayPort cables wouldn't matter. It would always recognize and assign my middle/main monitor, never seems to detect my side/aux monitor, regardless of which dock ports the monitors were plugged into.

Has anyone had any success getting their 2nd monitor back? I'm out of things to try.

2023 mbp m3 pro 36gb memory
2 Samsung SyncMaster SA850 monitors
Wavlink WL-UG69DK1 USB-C Dual 4K Docking Station (using DisplayPort)

I have the output from the diagnostics tool (~29mb). When I try to attach the .zip to this post I get:

"Your submission could not be processed because a security token was missing."

Szymon · 05-27-2026, 07:55 AM

Hello,

Does the other monitor appear in Display Settings or under Displays tab in DisplayLink Manager?

You can follow this FAQ https://support.displaylink.com/know...to-displaylink
to send us logs and raise your problem via tech support.

Regards,
Szymon

05-26-2026, 04:49 PM	#1
zach-h Junior Member Join Date: Jun 2025 Posts: 2	Same issue: 2nd monitor dropped after macOS update to 26.5 Updated to macOS 26.5 overnight, have lost my 2nd monitor. Was running DisplayLink manager 16, updated to 16.1 this morning, no change. I've done all the power cycling and cable swapping in the universe, same result of no 2nd monitor, but I did notice one interesting thing: swapping the DisplayPort cables wouldn't matter. It would always recognize and assign my middle/main monitor, never seems to detect my side/aux monitor, regardless of which dock ports the monitors were plugged into. Has anyone had any success getting their 2nd monitor back? I'm out of things to try. 2023 mbp m3 pro 36gb memory 2 Samsung SyncMaster SA850 monitors Wavlink WL-UG69DK1 USB-C Dual 4K Docking Station (using DisplayPort) I have the output from the diagnostics tool (~29mb). When I try to attach the .zip to this post I get: "Your submission could not be processed because a security token was missing."

05-27-2026, 07:55 AM	#2
Szymon DisplayLink Tech Support Join Date: Feb 2010 Posts: 344	Hello, Does the other monitor appear in Display Settings or under Displays tab in DisplayLink Manager? You can follow this FAQ https://support.displaylink.com/know...to-displaylink to send us logs and raise your problem via tech support. Regards, Szymon