I'm running XFCE on a Lenovo T460 and a docking station. I have the laptop screen, one monitor connected via VGA, and another connected via DVI.
On the DVI screen, when I open a window on my desktop and try to move it, the window multiplies itself and the screen looks corrupted. This only happens on the DVI screen.
If I deactivate and reactivate the monitor output, it fixes the problem temporarily. However, as soon as I open a new window and try to move it, the same thing happens again. Rebooting my Debian system does not fix this.
My setup:
Laptop: ThinkPad T460s
Docking Station: ThinkPad Pro Dock 40A1
Monitor: HP 27vx
OS: Debian Bookworm
Desktop Environment: XFCE
Display Manager: LightDM
Display Server: X11
How can I fix this? Is the docking station the problem?