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View Full Version : Sequoia 15.4 Beta on MBP missing 1 monitor


EMBkk
03-01-2025, 04:27 AM
Hi,

After upgrading to Sequoia 15.4 Beta (24E5206s) my Dell UD22 no longer displays all of the 3 monitors, only 2 of the 3 are showing up. Before this beta all 3 showed up fine via the dock.

I've cleaned up the Displaylink installation and re-installed the latest driver 1.11 but that didn't help. When I connect that blank (no signal) HDMI monitor directly to the MBP M4 Pro HDMI it works fine and I can see all 3 monitors as I had before I installed 15.4 Beta with 2 via the dock and the 3rd directly to the MBP. But this is not ideal.

Has anyone encountered this and was able to solve it?

Thank you.
EM.

dbienkowski
03-03-2025, 12:02 PM
Hi,
We have managed to replicate this problem. It looks like a change in macOS itself, however we will look into whether we can do anything about it.

I will share an update if anything changes.

EMBkk
03-03-2025, 03:08 PM
Appreciate the follow-up and the feedback.

I look forward to hearing if there's anything that can be done on your side.

Thank you!



Hi,
We have managed to replicate this problem. It looks like a change in macOS itself, however we will look into whether we can do anything about it.

I will share an update if anything changes.

ked
04-30-2025, 06:47 PM
Hey All, I'm seeing the same exact issue. Looking forward to an update!

Hari K
05-01-2025, 03:30 PM
I recently upgraded my mac book pro to Sequoia 15.4

When I try to connect monitors via DisplayLink, it wont recognize one of the monitors.

I see a new screen mirror icon on the Mac after the upgrade and in there -
the missing monitor's name is called "No Monitor" and I can use it to extend my desktop.
But it wont recognize the monitor by default. This probably happens only with external monitor connected via HDMI.

Theres definitely a conflict between DisplayLink and screen mirroring now.

Here is a quick article on the recent upgrade my Apple, if it helps in resolving this issue: https://www.carleton.edu/its/blog/mac-sequoia-15-2-update-and-screen-mirroring/

Thank you!

Scotters
05-01-2025, 04:02 PM
Hi - exactly the same on my MacBook Air, no issues with the monitors, if i close the MB, the two external work fine

mjaroch
05-05-2025, 11:00 AM
Hello Scotters,

Please contact our team on this case. Here (https://support.displaylink.com/knowledgebase/articles/755301) you can find a way how to do it.

EMBkk
05-30-2025, 06:46 AM
Hi, this is still unresolved, incl. in the latest release. Can you please provide an update on when we can expect this issue to be resolved? Thank you.

Linders
05-31-2025, 01:35 AM
I recently upgraded my mac book pro to Sequoia 15.4

When I try to connect monitors via DisplayLink, it wont recognize one of the monitors.

I see a new screen mirror icon on the Mac after the upgrade and in there -
the missing monitor's name is called "No Monitor" and I can use it to extend my desktop.
But it wont recognize the monitor by default. This probably happens only with external monitor connected via HDMI.

Theres definitely a conflict between DisplayLink and screen mirroring now.

Here is a quick article on the recent upgrade my Apple, if it helps in resolving this issue: https://www.carleton.edu/its/blog/mac-sequoia-15-2-update-and-screen-mirroring/geometry dash (https://geometrydashs.io/)

Thank you!


this is a great topic, i was having the same problem and now its solved

EMBkk
06-03-2025, 10:52 AM
this is a great topic, i was having the same problem and now its solved

How did you resolve it?

EMBkk
06-20-2025, 01:31 AM
This is still a problem. Why is this being ignored? Anyone from DisplayLink who can comment on this?


Hi,

After upgrading to Sequoia 15.4 Beta (24E5206s) my Dell UD22 no longer displays all of the 3 monitors, only 2 of the 3 are showing up. Before this beta all 3 showed up fine via the dock.

I've cleaned up the Displaylink installation and re-installed the latest driver 1.11 but that didn't help. When I connect that blank (no signal) HDMI monitor directly to the MBP M4 Pro HDMI it works fine and I can see all 3 monitors as I had before I installed 15.4 Beta with 2 via the dock and the 3rd directly to the MBP. But this is not ideal.

Has anyone encountered this and was able to solve it?

Thank you.
EM.