It could be a overscan problem. In Raspbian there is a config.txt file in boot.
#overscan_left=24
#overscan_right=24
#overscan_top=16
#overscan_bottom=16
disable_overscan=1
Try "disable_overscan=0" or change the border values to what gives you a full screen without going over.
Ingo
i am experiencing a strange problem with a freshly apt-get installed PD on a new Raspberry PI.
whenever i am opening a new patch, the window appears with its menubar above the vertical 0 position, meaning i can't touch the window and drag it to a usable position. the only (extremely annoying) workaround is to right-click the window and "move" the window to a central position every time i open a new patch.
i never experinced this beheaviour before, did anybody here ? I get the same on Debian Wheezy amd64 running LXDE but not on Ubuntu or WIndows, so I think it has to do with the window manager. Martin