I tried some configuration changes, i tried out different distros arch, Manjaro, openSUS but no one worked. I tried to change some configurations from old outdated guides and I deleted alsa configs and regenerated them.
My ThinkPad is an t440p an ultradock (these older ones without USB C) and everything works fine on Linux i am currently using Manjaro gnome but as I said it was with arch the same. So my issue is i don’t get any sound from the Dockingstation Displayport. Probably would be interesting if the laptop itself gets audio from Displayport but i have no mini so cable. The headphone jack and the USB plugs work perfect but as i use my monitor for my Xbox too it’s not really a solution to replace the plug every time.
ah and in sound the option HDMI/DISPLAYPORT 2 is shown but if i use it it only gives me internal audio. BTW i got the same issue on other debian based distros and on arch. Would be great if someone could help me :=)