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.

03-01-2025, 04:27 AM	#1
EMBkk Junior Member Join Date: Mar 2025 Posts: 7	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.