In answer to comment#10 (looking at the installed Tumbleweed): 1. No, "View Only" is not set. 2. There is no Xvnc running in the Tumbleweed guest. localhost:~ # ps wuaxf | grep [X]vnc localhost:~ # localhost:~ # ps wuaxf | grep [X]org root 1204 2.4 0.8 908728 147092 tty2 Ssl+ 09:57 0:10 \_ /usr/bin/Xorg.bin -nolisten tcp -background none -seat seat0 vt2 -auth /run/sddm/xauth_YbMLnG -noreset -displayfd 16 3. In the "Settings -> Advanced" menu on noVNC, there is a choice of logging levels, but I've no idea how to access any logs. 4. For this I'll try starting and install again and see what happens.