I'm using Ubuntu 13.04 with XFCE 4.10 from Ubuntu's sources, installed manually (i.e. not xubuntu-desktop) on my laptop that has an external screen attached. The big external monitor also has a vertical panel. My external screen is on the right side of my laptop.
When I maximize windows on my external monitor, the panel overlaps those. However, when I maximize windows on my smaller laptop monitor, there seems to be the panel's width reserved in space (which is just empty)
How can I make it reserve space on the right monitor?
My setup looks like this (generated with arandr and modified (right-of and primary are by me, trying to solve the problem):
#!/bin/sh xrandr --output HDMI1 --primary --right-of LVDS1 --mode 1920x1080 --pos 1440x0 --rotate normal \ --output LVDS1 --mode 1440x900 --pos 0x368 --rotate normal \ --output TV1 --off --output VGA1 --off