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U2417H, Dual, Latitude 7490, TB16
Equipment, Cable & Settings
- Latitude 7490
- Docking Station : Thunderbolt Dock (TB16) via USB-C
- (Two) U2417H Monitors
- DisplayPort 1.2 Cable from docking station to Monitor 1 (mDP in)
- DisplayPort 1.2 cable from Monitor #1 (DP out) to Monitor #2 (mDP in)
- Monitor #1 - MST On
- Monitor #2 - MST Off
Issues & Symptoms
- Video successfully duplicates between Laptop & Monitor #1 with case open
- Video successfully extends to Monitor #1 with case open
- Laptop LCD & Monitor #1 recognized by OS and appears in Display Settings in the Intel Graphics Settings
- Monitor #2 not recognized by OS and does not appear in Display Settings in the Intel Graphics Settings
- Monitor #1 and Monitor #2 display the same
Request
I would like to Daisy Chain the two monitors using MST.
I've applied the instructions from this post but had no success in setting this up.
Any help is much appreciated.
DELL-Chris M
Community Manager
Community Manager
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November 19th, 2018 08:00
The other thread had a different laptop, different monitor, and no TB16 dock.
Click my name and send me a private message with the U2417H service tags.
The act of daisy chaining from the TB16 is hit and miss. It is totally dependent on the Laptop drivers being fully updated and functional with daisy chaining (BIOS, Thunderbolt, GPU, USB 3.0, USB GBE, USB Audio). Also, read through the TB16 User's Guide.
NOTE = PC's requiring more than 130w power input must also be connected to their own power adapter for charging and operating at full performance.
In theory, this is how you would set that up =
TB16 TB3/USB Type-C cable --> Laptop USB Type-C
TB16 DP out port --> DP to mDP cable --> #1 monitor mDP in port (MST On or DP 1.2 Enabled)
#1 monitor DP out port --> DP to mDP cable --> #2 monitor mDP in port (MST Off or DP 1.2 Disabled)
A simpler setup would be to NOT daisy chain =
TB16 TB3/USB Type-C cable --> Laptop USB Type-C
TB16 DP out port --> DP to mDP cable --> #1 monitor mDP in port (MST Off or DP 1.2 Disabled)
TB16 mDP out port --> mDP to DP cable --> #2 monitor DP in port (MST Off or DP 1.2 Disabled)