The 'No Monitor' issue: issue & system detail & temporary "fix"
 

I have a MacBook Pro driving 2 24" Dell monitors through a dock via DisplayPort (system detail below). When waking up from sleep, my system almost always loses one or both monitors, blanking them and popping up the screen sharing picker asking me how I want to use 'No Monitor'.

Steps I've taken to fix

• Deleted and reinstalled DisplayLink Manager latest version 1.12.3 using the official tools
• Searched for firmware updates for all involved hardware (there are none)
• Tried other MacBook Pro USB-C ports
• Swapped out USB-C cables
• Swapped out DisplayPort cables
• Swapped out dock (started with Targus, switched to Wavlink)

None of these addressed the issue.

The only "fix" currently working
With your system running and your dock connected via USB-C:

1. Power off the dock
2. Disconnect DisplayPort cables
3. Power on the dock
4. Connect DisplayPort cables

At this point your monitors should be properly recognized and working. Until the system goes to sleep again.

I'm having to do this very frequently, the monitors are dropped 95% of the time the system goes to sleep. This applies to both the Wavlink and Targus docks.

System Overview

• 16" MacBook Pro M3 November 2023 running macOS Sequoia 15.5 & DisplayLink Manager 1.12.3 Build 81
• 2x Dell U2312HM 24" monitors
• Wavlink Ultra 5K Dock model WL-UG69DK1 Rev.A
• Targus 4K Docking Station model DOCK180

I have the system profile .zip generated by the DisplayLink Support Tool, but I get an 'entity too large' error when trying to upload and attach to this post. Your file guidelines state 250mb is the limit for .zip files, this one is only 21.9mb, no idea why it's failing. Meanwhile I'm attaching some related screenshots.

I'm hoping this information leads to a quick fix! Dealing with this issue multiple times throughout the workday is a real drag, to put it mildly.

Attachment 4589

Attachment 4590

Attachment 4591

Having the same problem.
Coming out of Lock Screen one will say No Monitor.
Fix has been to unplug monitor and plug power back in and displaylink will show it correctly.

Mack book M3.

Thanks
 

I was having the same issue on my M1 mini with a CalDigit TS3 Plus Thunderbolt 3 Dock. Plugging the DisplayLink into a USB port on the mini instead of the Dock solved the problem.

Hello bhenry11 and pmontelo,

Thank you both for sharing the solutions that worked for you. We appreciate your input.

I'm having a similar issue with my M3 Macbook Pro, but with a twist (most of the time)
OS 15.5
DisplayLink 1.12.3

While sometimes i have a blank screen, other times it will detect them, but the resolution is super funky and zoomed in. Meaning, my entire monitor will display maybe the top corner of the desktop (maybe what would usually be about 5 inches across on the screen) but zoomed in and taking up the whole display. So, if my desktop has a folder that's visible, that folder will be around 4 inches wide and the quality is super low. When this happens, my only fix seems to be unplugging the DisplayPort cables from the back of my hub and plugging them back in.

Oddly, today I had the black screen issue and I couldn't get ANYTHING back on my displays no matter what I did. I even swapped out different hubs. I finally found a Dell hub that worked. Unfortunately the resolution issue persists.

Hello jro,

Thank you for reaching out.
To help you with finding a solution please contact directly our support team.
You can do it by following these steps.

Running into this exact same issue. Seems to be happening with the latest version of DisplayLink 1.12.3 Build 81. Please fix it soon! :)

Hello sxr,

Please contact our support directly and share some more data with us.
You can do it by following these steps.

Still need a fix after trying config and latest driver
 

Almost every time I come out of locked screen I lose one of the monitors where it doesn't know what type it is.
Quick resolution is to unplug the monitor and it will fix itself.
1.12.4 Displaylink version


Online displays count: 3
Display ID: 0x87 Flags: ["MAIN"]
Mode: 1920x1200@60

Display ID: 0x1 Flags: ["BUILT-IN"]
Mode: 3600x2338@1.2e+02 (PHYSICAL), 1800x1169 (VIRTUAL)

Display ID: 0x86 Flags: []
Mode: 1920x1200@60




Hardware:

Hardware Overview:

Model Name: MacBook Pro
Model Identifier: Mac15,6
Chip: Apple M3 Pro


Software:

System Software Overview:

System Version: macOS 15.5 (24F74)
Kernel Version: Darwin 24.5.0

Hello bhenry11,

Thank you for reaching out.
To help you finding a solution please contact directly our support team.
You can do it by following these steps.

Update
 

Just an update.
I downgraded the displaylink version to 1.11.0 and it appears to have solved my problem.

same problem here - battling with this for months
 

Exactly the same problem here, often Display Link will report No Monitor on one or both of the external monitors. When it does the resolution is way off and unworkable.

I've tried various workarounds, with varying levels of success and reliability throughout the DisplayLink 12 releases and no less reliably in DisplayLink 13

1) Quit and restart DisplayLink
2) unplug dock from Mac and plug in again
3) unplug monitors from power and back in again

Unplugging the monitors was most reliable until version 13, now it rarely helps.

Setup is:
- Mac Pro M3
- DisplayLink Universal Dell dock D6000
- 2x Dell U2414H monitors

Just tried going back to version 1.11.0 and it was worse not better.

Hi jk1978,

Thank you for your report, and I'm sorry to hear you're experiencing this issue.

Based on debug data provided by end users, I can confirm that a series of Dell U2xxxx monitors are affected when connected via DP port. Our engineering team is currently investigating the issue, and we aim to provide a solution in the next release.

Regards,
Szymon

Thank you, looking forward to an update soon.

I've only had problem last week or so. But driving me crazy. Trying downgrade to 1.11.0......

Only been using for 5 minutes and it already turned off my screens and gave me a message of:

"This can happen if the hard disk space is low. Please free up some space and re-enable the screens using switches in Home tab."

I know it is not a lot, since drive is fairly full. But currently I have 8 GB available. Trying to find out what the minimum is.

There is no official information how much free space is required for macOS to prevent from such instable behaviour. Based on our tests and experience, we recommend to always keep at least 18-20 GB of free space on your startup disk.

Hope that helps,
Szymon

Szymon the last update was 29th July, any news on when we can expect another update to resolve this problem?

I am having the same problem with only the zoomed in corner of the screen showing, on multiple machines. I have updated my DisplayLink software, Mac OS, and checked for updated drivers for the hardware. I have tried all of the troubleshooting steps in this and other threads, but the problem has not changed. I have contacted support, but never got a response.

It's rather difficult to work without my external monitors, and I have been unable to use them for several weeks now. It's especially frustrating seeing how many of the support responses here in the forum are to ignore the problem or insist that it isn't happening, despite all of these reports. I'm at the end of my rope here on how to handle this.

Thank you for your patience. I was hoping to share a more definitive update by now as we had a candidate fix in testing. Unfortunately, it didn’t pass all verification checks.

Given the timing, it's getting late to catch next maintenance release, so I can't confidently promise a resolution by the end of this month. If it doesn't make it the next opportunity will be the release currently scheduled for the end of September.

I understand this is frustrating and I want to assure you the development team continues to work on resolving the issue. In the meantime, if it's an option for you I recommend connecting the monitor via HDMI, as the issue is specific to the DisplayPort interface on certain Dell monitors.

Regards,
Szymon

Thank you for the HDMI tip - my dock only has one HDMI so I will try using one monitor via HMDI and one via Display Port.

Has this been released and fixed?
 

Has this issue been fixed?

No, see previous posts.

Hello,

DisplayLinkManager 14.0 is out:
https://www.synaptics.com/products/d...ownloads/macos

Please check if the 'No monitor" problem is solved. Thanks for your feedback!

Regards,
Szymon

Its not fixed.

I started another thread https://www.displaylink.org/forum/sh...ad.php?t=69719