I have the same issue. It's because I can't prevent Guacamole from scaling the display. I even asked about it here: http://apache-guacamole-general-user-mailing-list.2363388.n4.nabble.com/Prevent-VNC-display-from-stretching-td2783.html
Haven't been able to figure it out yet. -- Sent from: http://apache-guacamole-general-user-mailing-list.2363388.n4.nabble.com/
