HDMI Monitor Not Working After macOS 15.4 Update with Dell UD22 Dock - Page 2

zcbtek3 · 06-02-2025, 10:01 AM

I have tried emailing DisplayLink 5 times and no response? Is there any ETA on a fix for this?

zcbtek3 · 06-02-2025, 10:07 AM

Hi there - any updates on this?

Hasan · 06-03-2025, 10:15 AM

Hi there - any updates on this?

Szymon · 06-03-2025, 01:13 PM

Thank you for your patience. I'm chasing for an update. Please note, this problem is not related to DisplayLink driver and it requires an update in Dell Dock UD22 Firmware.

Regards,
Szymon

siavoshs · 06-03-2025, 04:36 PM

I have the same issue. I ask you kindly to look into this issue, as it is affecting my productivity at work.
Thanks a lot!
S

Quote:

Originally Posted by renan

Hello everyone,

I've been using DisplayLink with the Dell UD22 dock for the past two years, connected to my MacBook Pro M3 Max. My setup includes three Dell monitors: two P2418D models (connected via DisplayPort) and one P2219H in vertical orientation (connected via HDMI). The dock itself is connected to the MacBook via USB-C.

Everything has worked flawlessly until today, when I updated my system to macOS 15.4. After the update, the third monitor (the P2219H connected via HDMI) stopped working. The other two monitors continue to function normally.

I’ve already tried several troubleshooting steps, including updating the system further to macOS Sequoia 15.5, but the issue remains.

I rely on all three monitors for my work, and this issue is seriously affecting my productivity.

Has anyone else experienced this, or does anyone know of a potential fix?

Thanks in advance for your help.

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

wiss · 06-17-2025, 11:49 AM

Quote:

Originally Posted by Szymon

Thank you for your patience. I'm chasing for an update. Please note, this problem is not related to DisplayLink driver and it requires an update in Dell Dock UD22 Firmware.

Regards,
Szymon

Does this mean that the HDMI port will work without relying on the laptops graphics?

EMBkk · 06-22-2025, 10:13 AM

I have the same issue. Looking forward to an update.

Deceiver · 06-25-2025, 12:09 AM

Thread bump.

I have been experiencing this since day 1 with my UD22 paired with my M4 Macbook Pro M4 Pro. I've managed to get by without the HDMI by using the onboard one, but it's cumbersome when using another machine with the dock.
I also found some USB-C ports did not work, as well as USB-A.

Speaking of which, I recently upgraded another machine to an M4 Macbook Air.
Last night I decided to use the Air with the dock for the first time, and to my surprise, everything that didn't work on the Macbook Pro does work on the Macbook Air.
Both are running Sequoia 15.5 and latest (June 12 2025) DisplayLink drivers.

I spoke to Dell, mentioning the previous staff replies in this thread, but they have passed the buck and claim it's an issue with macOS.

Edit: I have now opened a support case with Apple's Level 2 support. They see there is clearly an issue and will be investigating it further. I have a follow up call booked with them on July 1st 12:00 +10
Annoyingly, I did link them to this thread, but security measures mean they are unable to view it.

MariusJ · 06-25-2025, 06:23 AM

Hi guys. Just thought I'd share my findings.

I've had the same issue since upgrading to Sequoia 15.5, but every once in a while I happened to activate both screens. For the last couple of weeks I only managed to get one..

Then, a few days ago I disconected the dock and macbook for a couple of hours and also disconnected the dock from the power supply. Then when I reconnected everything I got two screens. Since then it's worked just fine. I have both screens activated whenever I connect again.

A colleague of mine experienced the same issue as the rest of us, but when I suggested to disconnect everything (including power) for a few minutes it worked.

This suggests to me that it has something to do with the HDMI handshake..

Either way, just a suggestion for you guys. It's worked for me a couple of times now,

06-02-2025, 10:01 AM	#11
zcbtek3 Junior Member Join Date: Jun 2025 Posts: 2	Still no solution I have tried emailing DisplayLink 5 times and no response? Is there any ETA on a fix for this?

06-03-2025, 10:15 AM	#13
Hasan Junior Member Join Date: Jun 2025 Posts: 1	updates? Hi there - any updates on this?

06-25-2025, 12:09 AM	#19
Deceiver Junior Member Join Date: Jun 2025 Posts: 1	Thread bump. I have been experiencing this since day 1 with my UD22 paired with my M4 Macbook Pro M4 Pro. I've managed to get by without the HDMI by using the onboard one, but it's cumbersome when using another machine with the dock. I also found some USB-C ports did not work, as well as USB-A. Speaking of which, I recently upgraded another machine to an M4 Macbook Air. Last night I decided to use the Air with the dock for the first time, and to my surprise, everything that didn't work on the Macbook Pro does work on the Macbook Air. Both are running Sequoia 15.5 and latest (June 12 2025) DisplayLink drivers. I spoke to Dell, mentioning the previous staff replies in this thread, but they have passed the buck and claim it's an issue with macOS. Edit: I have now opened a support case with Apple's Level 2 support. They see there is clearly an issue and will be investigating it further. I have a follow up call booked with them on July 1st 12:00 +10 Annoyingly, I did link them to this thread, but security measures mean they are unable to view it. Last edited by Deceiver; 06-25-2025 at 02:04 AM.

06-25-2025, 06:23 AM	#20
MariusJ Junior Member Join Date: Jun 2025 Posts: 1	Solution that works for me Hi guys. Just thought I'd share my findings. I've had the same issue since upgrading to Sequoia 15.5, but every once in a while I happened to activate both screens. For the last couple of weeks I only managed to get one.. Then, a few days ago I disconected the dock and macbook for a couple of hours and also disconnected the dock from the power supply. Then when I reconnected everything I got two screens. Since then it's worked just fine. I have both screens activated whenever I connect again. A colleague of mine experienced the same issue as the rest of us, but when I suggested to disconnect everything (including power) for a few minutes it worked. This suggests to me that it has something to do with the HDMI handshake.. Either way, just a suggestion for you guys. It's worked for me a couple of times now,

06-02-2025, 10:07 AM	#12
zcbtek3 Junior Member Join Date: Jun 2025 Posts: 2	Hi there - any updates on this?

06-03-2025, 01:13 PM	#14
Szymon DisplayLink Tech Support Join Date: Feb 2010 Posts: 193	Thank you for your patience. I'm chasing for an update. Please note, this problem is not related to DisplayLink driver and it requires an update in Dell Dock UD22 Firmware. Regards, Szymon

06-04-2025, 01:32 PM	#16
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

06-22-2025, 10:13 AM	#18
EMBkk Junior Member Join Date: Mar 2025 Posts: 7	I have the same issue. Looking forward to an update.