I uninstalled as you said, I still have some left overs:
Code:
/lib/systemd/system/displaylink.service
/var/tmp/kdecache-sanderson/favicons/displaylink.org.png
/var/tmp/kdecache-sanderson/favicons/support.displaylink.com.png
/var/tmp/kdecache-sanderson/favicons/www.displaylink.com.png
/var/tmp/kdecache-sanderson/favicons/www.displaylink.org.png
Should I manually delete them?