My experience with the official dock has been quite negative, it would sometimes not work until the power cable is unplugged and then plugged back - that is with all the latest stable updates for everything. Other people on Steam forums run into this issue too.
I already have several others but wanted the officoal one since it has DisplayPort. Hopefully I don't run into the same issues, but I know now there are third party options with it as well.
My experience with the official dock has been quite negative, it would sometimes not work until the power cable is unplugged and then plugged back - that is with all the latest stable updates for everything. Other people on Steam forums run into this issue too.
https://steamcommunity.com/app/1675200/discussions/3/3472864793317268180/
https://www.reddit.com/r/SteamDeck/comments/y3wbad/i_have_to_unplug_dock_every_time_i_change_inputs/
https://www.reddit.com/r/SteamDeck/comments/137tiut/steam_deck_dock_requires_unpluggingreplugging/
https://www.reddit.com/r/SteamDeck/comments/y59bl9/no_signal_when_i_connect_steam_deck_to_tv_using/
I’ve noticed the issue too late for a simple refund process and their support was not cooperative at all.
I recommend looking at other docks instead, will cost you less and work better.
I already have several others but wanted the officoal one since it has DisplayPort. Hopefully I don't run into the same issues, but I know now there are third party options with it as well.