HDMI Monitor Not Working After macOS 15.4 Update with Dell UD22 Dock

SadMac · 06-04-2025, 01:32 PM

After updating to Sequoia 15.5 my HDMI monitor has also stopped working.

My setup:
3 Dell P2722H
1 Dell Universal UD22 Dock
1 Apple M4 Max Sequoia 15.5

2 P2722H are connected to the dock using DisplayPort
1 P2722H is connected to the dock using HDMI

The dock is plugged into the Mac using USB-C.

I've tried the DisplayLink cleaner and re-install, reboot, etc. Currently running DisplayLinkv1.12.3

06-04-2025, 01:32 PM	#9
SadMac Junior Member Join Date: Jun 2025 Posts: 1	After updating to Sequoia 15.5 my HDMI monitor has also stopped working. My setup: 3 Dell P2722H 1 Dell Universal UD22 Dock 1 Apple M4 Max Sequoia 15.5 2 P2722H are connected to the dock using DisplayPort 1 P2722H is connected to the dock using HDMI The dock is plugged into the Mac using USB-C. I've tried the DisplayLink cleaner and re-install, reboot, etc. Currently running DisplayLinkv1.12.3