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change default login background gnome rhel 6

solution:
copy your file to /usr/share/backgrounds/default.png
then update /usr/share/backgrounds/default.xml

# cp /usr/share/backgrounds/default.png /usr/share/backgrounds/default.png.orig
# cp ~/Pictures/redhat.png /usr/share/backgrounds/default.png

# cp  /usr/share/backgrounds/default.xml  /usr/share/backgrounds/default.xml.orig
# vi /usr/share/backgrounds/default.xml
<background>
    <starttime>
            <year>2010</year>
            <month>03</month>
            <day>01</day>
            <hour>07</hour>
            <minute>00</minute>
            <second>00</second>
    </starttime>
    <static>
        <duration>86400.0</duration>
        <file>
            <size width="1920" height="1200">/usr/share/backgrounds/default.png</size>
        </file>
    </static>
</background>

Issue: This was not necessarily an issue.  I just wanted a different graphic to be displayed when I logged in to my workstation and I don't have much use for a desktop that changes based on where the sun is in the sky?






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