[NAME]  Interesting, I had a WD15 connected to dual U2415 displays and the attached system always defaulted to 1920x1080, but it was still possible to set them to 1920x1200 -- which was even listed as "Recommended", making it even more strange as to why the systems didn't default to it in the first place.  Have you tried using Intel Graphics Control Panel / Command Center to set the resolution, even if that means defining a custom resolution?
Hi, I have a Latitude 5420 (i7-1185G7) with WD19s docker, the screen resolution can only be set to 1920x1080 rather than 1920x1200 when connect with a Dell U2412M, I have updated the driver on Intel Iris graphic card and the docker firmware but still doesn't give the option to the correct resolution. Please help, thank you.
Latitude 5420 with WD19s doesn't support 1920x1200 (Dell U2412M)