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?
does the docking station happen to have a display link chip in it? they give a lot of problems in my experience. it requires a separate driver
Thanks for your input! No the WD22TB4 Dock doesn’t have a display link chip. The 2 external screens work just fine after repluggin the laptop, however the internal laptop screen is still lagging.
Which GPU and driver?
Mesa, didn’t install anything and just kept every distro i tried stock
I have a Dell dock that I use with my Framework laptop in private, and my Dell laptop for working in Homeoffice, the Framework runs Fedora, the Dell sadly windows, the dock works perfectly fine regardless.
I’m not sure on the exact models: Iirc the dock is a WD22TB4.
Thanks for your reply! I have the same dock, do you have to replug your framework after boot for it to detect the screens at all?
You might be missing a driver that’s in the ISO. Dell offers driver downloads for Ubuntu 20.04 LTS near the bottom of the product page.
