Q: How can I change the lockscreen in Fedora 17 using Gnome 3 to match my desktop wallpaper?
A: I was able to find two way to accomplish this.
1) Get your wallpaper and convert it to a png (if it is not already). I used GIMP to open the image, then selected export. Then I selected png from the file extension drop down and clicked export. I chose the defaults on the export screen.
Then move the new png image to the location that Gnome stores the default wallpaper like this.
(Note: this command should all be on one line)
mv /home/savona/Pictures/hacker_sym.png /usr/share/backgrounds/beefy-miracle/default/wide/beefy-miracle.png
Select yes to overwrite the original.
There are three different defaults, normalish, standard, and wide. Make sure you select one for the correct aspect of your wallpaper. I selected wide because my wallpaper was 1920×1080.
2. A more elegant way to do it is to edit the xml file that gnome uses as it’s default theme. Edit the /usr/share/backgrounds/beefy-miracle/default/beefy-miracle.xml file and change the paths in the code (see below) to point to your image.
<!-- Wide 16:10 -->
<size width="1920" height="1200">/usr/share/backgrounds/beefy-miracle/default/wide/beefy-miracle.png</size>
<!-- Standard 4:3 -->
<size width="2048" height="1536">/usr/share/backgrounds/beefy-miracle/default/standard/beefy-miracle.png</size>
<!-- Normalish 5:4 -->
<size width="1280" height="1024">/usr/share/backgrounds/beefy-miracle/default/normalish/beefy-miracle.png</size>
I think this answers your question. Thanks for writing!
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