Display Link Stopped working on 3 monitors with M1

appletechieguy · 02-13-2026, 01:15 AM

My Display Link stopped showing all three displays starting this week, it had been working great. I had my M1 Mac running MacOS 26.2 connected to a LG HD QHD and my LG Ultrawide. I can get my built in display and one of the two monitors to connect correctly but not all three. I can see all three monitors but only one or the other LG will allow me to move content to the display. I updated to MacOS 26.3 with no success.

Szymon · 02-13-2026, 07:25 AM

Hi,
Do your monitors appear in the Displays tab of DisplayLink Manager app and are they enabled like in the picture?

Regards,
Szymon

appletechieguy · 02-13-2026, 04:29 PM

Yes and can see both monitors and both are selected but only one is active and visible in my list of displays.

Szymon · 02-16-2026, 07:54 AM

Thanks for the update. It's going to be difficult to assess what's going wrong without logs. Could you please follow this article to capture debug data: https://support.displaylink.com/know...to-displaylink

Regards,
Szymon

Xorcerer · 03-05-2026, 03:07 PM

I have an M4 MBP 14' with Tahoe 26.3.

It connect to
1. One monitor directly though USB Type-C.
2. One Targus Dock which connects to two monitors.

It works perfect before Tahoe.

And now, the two monitors can be both detected by DisplayLink, but only one can be detected by the OS. If I disable the one which detected by the OS, on DisplayLink, the other one screen on immediately.

I was told that it may cause by FileVault for some privacy reason, which makes no sense to me.

Szymon · 03-05-2026, 03:14 PM

Hello,

What is your Targus product? Are you on the latest available DisplayLink Manager for macOS?
https://www.synaptics.com/products/d...ownloads/macos

Regards,
Szymon

Wspence · 03-05-2026, 04:03 PM

I am also having an issue with monitors, I have 2 identical model monitor LG 49" worked fine before up with one being HDMI (still works) the other being into a Lenovo dock. the dock does not show Device detected so i grabbed my Displayport to USB C and tried plugging it in and still will not work. using Displaymanager15.1

Latest Tahoe version 26.3.1 (25D2128)

not sure how to get you logs but if you tell me what you need and how ill provide.

Szymon · 03-06-2026, 10:53 AM

What is the exact Lenovo model of the dock? Would you provide a link to web store with it?

Regards,
Szymon

Xorcerer · 03-08-2026, 12:47 PM

Quote:

Originally Posted by Szymon

Hello,

What is your Targus product? Are you on the latest available DisplayLink Manager for macOS?
https://www.synaptics.com/products/d...ownloads/macos

Regards,
Szymon

Thank you for replying.

Targus USB-C DV4K Docking Station 100W Power
Amazon Link: https://www.amazon.com/Targus-Univer.../dp/B07BPQKP8V

I did install the latest one (15.1.0 build 51).
It doesn't work on both DisplayLink 13 and 15.1.0.

nemu_chan · 03-08-2026, 01:19 PM

I am also having an issue with my two monitors. (only one screen is working)

I have two identical DELL monitors that worked fine before, up until 2 hours ago. The only thing that I did and that seems to have messed up everything is that I updated my OS to Tahoe version 26.3.1 (25D2128)

For context, my monitors are connected to a Dell Universal Dock UD22 using HDMI and DisplayPort. I have been using this setting for the past 6 months with no issues with version 14.

I tried to update to version 15, but ended up having the same issue. I still have a single monitor working.

02-13-2026, 01:15 AM	#1
appletechieguy Junior Member Join Date: Feb 2026 Posts: 2	Display Link Stopped working on 3 monitors with M1 My Display Link stopped showing all three displays starting this week, it had been working great. I had my M1 Mac running MacOS 26.2 connected to a LG HD QHD and my LG Ultrawide. I can get my built in display and one of the two monitors to connect correctly but not all three. I can see all three monitors but only one or the other LG will allow me to move content to the display. I updated to MacOS 26.3 with no success.

03-05-2026, 03:07 PM	#5
Xorcerer Junior Member Join Date: Mar 2026 Posts: 2	I have the same issue. I have an M4 MBP 14' with Tahoe 26.3. It connect to 1. One monitor directly though USB Type-C. 2. One Targus Dock which connects to two monitors. It works perfect before Tahoe. And now, the two monitors can be both detected by DisplayLink, but only one can be detected by the OS. If I disable the one which detected by the OS, on DisplayLink, the other one screen on immediately. I was told that it may cause by FileVault for some privacy reason, which makes no sense to me.

03-05-2026, 04:03 PM	#7
Wspence Junior Member Join Date: Mar 2026 Posts: 2	Same issue I am also having an issue with monitors, I have 2 identical model monitor LG 49" worked fine before up with one being HDMI (still works) the other being into a Lenovo dock. the dock does not show Device detected so i grabbed my Displayport to USB C and tried plugging it in and still will not work. using Displaymanager15.1 Latest Tahoe version 26.3.1 (25D2128) not sure how to get you logs but if you tell me what you need and how ill provide.

03-08-2026, 01:19 PM	#10
nemu_chan Junior Member Join Date: Mar 2026 Posts: 1	Same issue after Tahoe update I am also having an issue with my two monitors. (only one screen is working) I have two identical DELL monitors that worked fine before, up until 2 hours ago. The only thing that I did and that seems to have messed up everything is that I updated my OS to Tahoe version 26.3.1 (25D2128) For context, my monitors are connected to a Dell Universal Dock UD22 using HDMI and DisplayPort. I have been using this setting for the past 6 months with no issues with version 14. I tried to update to version 15, but ended up having the same issue. I still have a single monitor working.

02-13-2026, 07:25 AM	#2
Szymon DisplayLink Tech Support Join Date: Feb 2010 Posts: 260	Hi, Do your monitors appear in the Displays tab of DisplayLink Manager app and are they enabled like in the picture? Regards, Szymon

02-13-2026, 04:29 PM	#3
appletechieguy Junior Member Join Date: Feb 2026 Posts: 2	Yes and can see both monitors and both are selected but only one is active and visible in my list of displays.

02-16-2026, 07:54 AM	#4
Szymon DisplayLink Tech Support Join Date: Feb 2010 Posts: 260	Thanks for the update. It's going to be difficult to assess what's going wrong without logs. Could you please follow this article to capture debug data: https://support.displaylink.com/know...to-displaylink Regards, Szymon

03-05-2026, 03:14 PM	#6
Szymon DisplayLink Tech Support Join Date: Feb 2010 Posts: 260	Hello, What is your Targus product? Are you on the latest available DisplayLink Manager for macOS? https://www.synaptics.com/products/d...ownloads/macos Regards, Szymon

03-06-2026, 10:53 AM	#8
Szymon DisplayLink Tech Support Join Date: Feb 2010 Posts: 260	What is the exact Lenovo model of the dock? Would you provide a link to web store with it? Regards, Szymon