Ubuntu – How to force GNOME panels et. al. to display on a different monitor without mirroring

Well , I had script for resetting the gnome panel . I am not sure if this script will work on notebook version , i used it in desktop version ,and its very helpful .

save this script to PanelRestore.sh to the desktop for example and chmod +x PanelRestore.sh and then run it by terminal ./PanelRestore.sh , a new window will pop up , just click restore default setting and you would be good to go

#!/bin/sh
#
# GNOME Panel Save / Restore
# Writen by PhrankDaChicken
#
# http://ubuntu.online02.com
#
#
# Updated to add restore defaults by jimjimovich
# http://www.starryhope.com
#
#


DIR=$(pwd)
TITLE="PanelRestore"

Main () {
    CHOICE=$(zenity --list --title "$TITLE" --hide-column 1 --text "What do you want to do?" --column "" --column "" \
"0" "Save Panel Settings" \
"1" "Restore Panel Settings" \
"2" "Restore Default Panel Settings")
    if [ $CHOICE = 0 ]; then
        Panel_Save
    fi
    if [ $CHOICE = 1 ]; then
        Panel_Restore
    fi
    if [ $CHOICE = 2 ]; then
        Panel_Defaults
    fi  
}

Panel_Restore () {
    FILE=$(zenity --title "$TITLE: Open File" --file-selection --file-filter "*.xml" )
    if [ -n "$FILE" ]; then 
        gconftool-2 --load "$FILE"
        killall gnome-panel
    fi
    Main
}

Panel_Save () {
    FILE=$(zenity --title "$TITLE: Save File" --file-selection --save --confirm-overwrite --filename "Gnome_Panel.xml" --file-filter "*.xml" )
    if [ -n "$FILE" ]; then 
        EXT=$(echo "$FILE" | grep "xml")
        if [ "$EXT" = "" ]; then
            FILE="$FILE.xml"
        fi
        gconftool-2 --dump /apps/panel > $FILE
        zenity --info --title "$TITLE: File Saved" --text "File saved as: \n $FILE"
    fi
    Main
}

Panel_Defaults () {
    zenity --question --text="Are you sure you want to restore the default top and bottom panels?"
    gconftool-2 --recursive-unset /apps/panel
    rm -rf ~/.gconf/apps/panel
    pkill gnome-panel
    exit
}

Main

# END OF Script

I've had a similar problem and I've found if you lower the resolution in the display settings and apply it before making any further changes you don't get black screens. You can then turn mirroring off and rearrange the monitors in the display settings. Once this is done you can reset the original resolution. I suspect the problem is somehow related to making multiple settings at once. This may not work for you but it's worth a try. :¬}