Thank you for the log files.
A monitor is detected on the port, however there is a problem when the monitor tells its identity.
The dock can't read the
EDID, so it doesn't know what the monitor is and what it can do. That's why you have a "No Monitor" instead of "DELL U2412M" in Windows.
By default, when the monitor doesn't tell what it is and what it does, the dock will send 1920*1200 @ 154.00 MHz. Your monitor may not support it.
1. I recommend you try to unplug and replug the ***monitor*** from the dock several times to try and force rediscovery. I can't know if the defect comes from the dock or your monitor. Invalid EDIDs are NOT uncommon.
Also, when we can read the EDID, you'll see a file .edid saved in the folder which is the raw data sent from the monitor.
2. Can you check that monitor on another dock/graphics card?
3. Have you tried another monitor on this dock?
Kind regards,
Alban