XPS 15 9510 External Display Connection Guide

8K displays flickering

Question

When I connect two 8K displays to both Thunderbolt ports on the left side or the right side of the computer, they flicker when they run at a display rate of 60 Hz.

Cause

This may be because of interlacing or switching as the Thunderbolt controller has send only part of the data, where the other one has to send the second part of the data synchronization may be a problem.

Workaround

Connect each 8K display to a Thunderbolt port on either side of the computer, for example, one 8K display to either Ports on the left side, and the other to either Ports on the right side. After doing so, power the displays off and on again.

8K displays not displaying correctly

Question

When I connect the 8K display to the computer using a Thunderbolt docking station, it disrupts the display of my computer.

Cause

This may be because of a hardware limitation with the Thunderbolt docking station.

Workaround

Connect the 8K display directly to a Thunderbolt port on your computer. Power on the display and than turn off the power on the display.

Daisy chain two 4K monitor via WD19TB series cannot reach 4K resolution

Question

When two 4K display is connected by Daisy chain via WD19TB series docking station, it cannot reach resolution upto 4K *2 @60 Hz.

Cause

This is because currently Intel GFX driver disables Display Stream Compression (DSC) support.

Workaround

No display or Blank screen after display Multi-Stream Transport (MST) option is turned off via WD19/WD19TB/WD19DC series docking stations

Question

When the display Multi-Stream Transport (MST) is tuned OFF via WD19/WD19TB/WD19DC series docking stations, the display does not power on or has a blank screen.

Cause

Multi-Stream Transport (MST) hub do not have any specific definition for handling or deal with this kind of DisplayPort Configuration Data (DPCD) change (eg: MST/SST, DP1.4/1.2, HDR, FreeSync).

Workaround

4K display cannot reach 4K @60 Hz resolution if it is connected to a WD19TB series docking station via MFDP port.

Question

When a 4K display is connected to a WD19TB series docking station via Multi-Function DisplayPort (MFDP) USB Type-C connection, the display cannot reach 4K @60 Hz resolution.

Cause

According to DP Multi-Stream Transport (MST) DSC spec, DP stream is controlled during the blanking period and the size of those blanking period gets affected by lot of factors including DSC (display stream compression) reported monitor support (modes, timings, RB1, RB2) and, Multi-Stream Transport (MST). Due to Intel limitation in this generation, DSC is disabled and hence it causes limitation with small blanking period. If the blanking period is too small, there will be sufficient bandwidth for 4K @60 Hz resolution.

Workaround

Use Type-C to DisplayPort (DP) or HDMI dongle to output display as alternative.