My Laptop at work is Latitude 7430 and i’d like to switch from Windows to Linux (any distro is fine). Now i have tried Ubuntu, openSUSE and Manjaro to no avail, due to the insane lag on the integrated screen. When running on the Live ISO over USB everything seems to be working fine, the screens attached to the docking station are recognized properly and the integrated screen is not lagging. As soon as i install to disk and reboot into the new system, the issues start: laggy integrated screen (it’s updating in the background but the output seems to be 2-3 seconds behind somehow) & screens attached to the docking station only become available after replugging. Now i thought maybe it’s a x11 issue and tried wayland, no difference. Same goes for switching from KDE to GNOME.

Anyone got a working Latitude 7430 + docking station + Linux setup or got some tips on trouble shooting?