This works anytime but may be useful to use your KVM antlets until they resolve the GUI bug.
ssh -L 8888:localhost:5900 root@myantsle.local
5900 is the first KVM and 5901 would be the second.. and so on.
8888 is the local port you would access
example: xtightvncviewer 127.0.0.1:8888
localhost is the laptop I am using.
not sure it matters what VNC app you are using.