Sequoia 15.4 Beta on MBP missing 1 monitor
 

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.

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.

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!

Hey All, I'm seeing the same exact issue. Looking forward to an update!

Sequoia 15.4 Upgrade on Mac Book Pro missing 1 external monitor
 

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/ma...een-mirroring/

Thank you!

Same issue
 

Hi - exactly the same on my MacBook Air, no issues with the monitors, if i close the MB, the two external work fine

Hello Scotters,

Please contact our team on this case. Here you can find a way how to do it.

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.

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

How did you resolve it?