[Imran3899]

I am experiencing a repeatable display wake issue with my MacBook and Anker Prime Triple Display Dock using DisplayLink.

**Environment:**

- MacBook Pro M4
- macOS **26.4.1 (25E253)**
- Anker Prime Triple Display Dock — model appears to be **A83B3** *(I initially read the model as A8383)*
- DisplayLink Manager **17.0.24**, currently the latest version available to me
- Main Dell monitor connected through **DisplayPort**
- Second external monitor connected through **HDMI**
- This configuration was previously working normally; the problem started recently.

**Problem:**

Both external monitors work correctly when initially connected. The problem occurs after putting the Mac to sleep.

The issue is reproducible with the following sequence:

1. Both DP and HDMI monitors are working normally.
2. Put the Mac to sleep.
3. Wake the Mac.
4. The **DisplayPort Dell monitor comes back**, but the **HDMI monitor does not wake/reconnect**.
5. Disconnect the DisplayPort cable from the Anker dock.
6. Wait approximately 10 seconds.
7. Reconnect the DisplayPort cable.
8. **Both the DP and HDMI monitors immediately work again.**

This is particularly interesting because I do **not** need to disconnect/reconnect the HDMI cable. Cycling the **DisplayPort connection causes the missing HDMI display to be detected again**.

**Troubleshooting already performed:**

I have already:

- Completely powered off/power-cycled the Anker dock
- Reset the dock
- Reinstalled DisplayLink Manager
- Rebooted the Mac
- Confirmed DisplayLink Manager is current (17.0.24)
- Tested the HDMI monitor/cable
- Tested the HDMI monitor by itself with the DP monitor disconnected

When the DP monitor is disconnected, the HDMI monitor works. I can then reconnect DP and **both displays work simultaneously**, so this does not appear to be a simple bad HDMI cable, monitor, or permanently failed dock output.

The problem specifically appears to occur during **display reinitialization after macOS sleep/wake when both displays are connected**.

The fact that disconnecting/reconnecting DP causes HDMI to immediately return makes me wonder whether there is a **DisplayLink/macOS display enumeration or handshake issue during wake**, rather than a hardware failure.

Has anyone encountered this specifically with **macOS 26.4.1 / DisplayLink Manager 17.0.24**, particularly with an Anker Prime Triple Display dock?

I would also appreciate guidance from DisplayLink on whether there are any known sleep/wake issues with this macOS/DisplayLink combination, or any diagnostic logs I can collect immediately after the HDMI display fails to return.

Thanks.