Display Link Suddenly Stopped Working

[ujwalm]

Hello,

I have two USB devices - one is USB to HDMI CADYCE and the Other is USB C to HDMI CADYCE. Earlier both of these devices used to work well and I could use a second monitor on my Mac. However, since last week I am unable to do so.

I have already tried removing the software and reinstalling using the removal tool provided. However, no joy yet.

Please suggest.

[ujwalm]

For some reason I am unable to attach the logs. So the link to the logs is here (https://drive.google.com/file/d/1T5Fr-Z8kHxa5BpxGTaTdJhMkXWti5ynT/view?usp=sharing).

[Paul E]

Since the overnight update of my MacBook to V. 26.3.1, Display Link stopped working.

[Szymon]

Hi ujwalm,

From the logs, I can see that one DisplayLink device was connected earlier, but it stopped appearing on Friday afternoon (2026‑03‑06). It’s also not detected by macOS anymore, as it doesn’t show up in the USB device list.

When you collected the logs, was the device connected via USB cable and powered on?

Regards,
Szymon

[Szymon]

Hi Paul,

Since the overnight update of my MacBook to V. 26.3.1, Display Link stopped working.

Original problem discussed in this thread is not related to macOS version. The device worked after the upgrade to 26.3.

Could you elaborate more about your setup, (MacBoo, DisplayLink product and monitors)? Are you on DisplayLink Manager 15.1?

Regards,
Szymon

[ujwalm]

When you collected the logs, was the device connected via USB cable and powered on?



Yes, this is CADYCE USB to HDMI. I also got a new USB C to HDMI.

Some observations:
1. System Report shows USB device connected as "Generic Billboard Device".
2. Privacy has Screen Recording Allowed.
3. Privacy has "Always Allow" set for accessories.

[Szymon]

I see Generic Billboard Device in the USB devices, but this is not a DisplayLink device. You can tell this by USB Vendor Id. All DisplayLink devices have id 0x17E9.

Regards,
Szymon

[ujwalm]

Thanks for your reply. Whenever I connect CADYCE the Generic Billboard Device is shown. When I remove it it is not shown in the USB. Please see this video. (https://photos.app.goo.gl/vJ3fXZZo3tHSgaKy7).

Also, both of these used to work earlier using DisplayLink.

I see Generic Billboard Device in the USB devices, but this is not a DisplayLink device. You can tell this by USB Vendor Id. All DisplayLink devices have id 0x17E9.

Regards,
Szymon

[Szymon]

This confirms CADYCE adapter is not a DisplayLink device. I believe it is a USB Alt-mode adapter. For further help wit this particular device I recommend contacting support of the product manufacturer.

Do you have any other device?

Regards,
Szymon

[smitty993]

hi,

monday everything worked fine but today only 2 of my 3 additional screens are working.

set-up
macbook air m4
Tahoe 26.3.1
3 external screens
3 screens are connected to with hdmi
displaylink hardware

the software is showing the 2 screens as active but no longer showing the 3rd screen at all in the software visual which would mean it is not seeing the screen at all.

[Szymon]

Hi,

What is your DisplayLink Hardware?

Regards,
Szymon