Comment 2 for bug 176174

Does not pick up virtual display changes with --panning. Example is
xrandr --fb 1024x768 --output LVDS --mode 1024x600 --panning 0x768
which makes a 1024x768 panning display on a netbook that is 1024x600 in hardware. It works in that you can put windows in that space and it pans, but the panel does not notice and cannot be moved below the 600 line.