I accidentally updated my NVIDIA drivers with apt. After reinstalling the old version (410) I end up in a command line login. Here is everything fine and nvidia-smi says that driver and cuda are installed properly.
When I startx I get my desktop, but mouse and keyboard don't work. Means my keyboard works in tty but not in X.
Has anyone an idea, how I could get my desktop back?
OS: Kubuntu 18.04
GPU: NVIDIA RTX 2080 Ti