Dell D6000 - DisplayPort Alternate-Mode for HDMI as 3rd Display

[AlbanRampon]

Hello,

I will summarise what the Dell D6000 does, as I can feel a trend starting.
First, DisplayLink doesn't design, manufacture or sell any end product. DisplayLink is a semiconductor company, we sell chips.

Dell has designed the Dell D6000 integrating two technologies:
- DisplayLink with the DisplayLink DL-6950 chip,
- DisplayPort Alternate-Mode (Alt-Mode).

Because DisplayLink is universal, and also works over the Type-A connector, it has priority over the alternate-mode.
The DisplayLink DL-6950 series is driving 2 displays (+ audio + Ethernet).
The DisplayPort Alt-Mode is ONLY invoked/usable for:

1. The 3rd display, AND
2. The HDMI output only, AND
3. Using the Type-C connector only, AND
4. On platforms which support DisplayPort Alternate-Mode (over Type-C). This is a hardware requirement on the laptop/desktop.

You have no issue when using ANY combination of TWO displays: DP+DP or DP+HDMI
This means you have no issue with DisplayLink technology.

You have an issue only with the 3rd display, and only on the HDMI output.
This means you have an issue with DisplayPort Alternate-Mode.

The display matrix is detailed in the Dell D6000 user guide page 4.

The platform you have may not feature DisplayPort Alternate-Mode, you may be using a display mode not supported by the dock, monitor, or graphics card.
As this has nothing to do with DisplayLink, I would recommend you contact Dell, the manufacturer/seller, for support on that third party technology used.


The Dell D3100 was designed differently. It only uses DisplayLink technology.

Kind regards,
Alban