DisplayLink used to work on my machine with neon, not without some issues. But after recent upgrade of packages, connecting monitor shows KDE splash screen or a tty or someties it's login screen for a few seconds and after that it turns to blank screen and I can't do anything with the system, even switch to tty (Ctrl+Alt+F1) to try to diagnose it.
The only thing that still works is Power button. Pressing it displays normal KDE splash screen for turning off and computer turns off in a few seconds.
If a monitor is connected during system boot, this happens in a few seconds after the login screen showing.
I was able to capture logs (attached) running
Code:
sleep 30 && ./DLSupportTool
from a tty session and then connecting the monitor and switching back to X (Ctrl+Alt+F7). Looks like the current KDE session is killed at this point because I tried doing the same from KDE and got no logs.