05-02-2019 07:53 AM
dock type 40an with a p1 thinkpad does the same thing and it isn't a hybrid dock
40AN is Thunderbolt dock. It works fine for what you want to do. But you have to change the Boot Display Device in BIOS Setup.
05-02-2019 12:55 PM
Ok, those models are working. Thanks! Feeling a little burned that the other ones won't work. But thanks for the info
Unfortunately it's a limitation of DisplayLink, which needs a driver to load in the OS before display output will work.
Docks that don't use DisplayLink will work, such as the 40A9 USB-C dock, the Thunderbolt docks, and the mechanical side-load docks like 40AH.