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I've seen many stuff here about it but all I want to do is delete this big 2 MB image which loads everytime my Ubuntu boots. As the general law says these things slows down the system. On boot it flashes and then get changed to my current desktop wallpaper. I don't want it anymore. May be I want to add this light weight image instead of it. Or can't I just get rid of it completely and only my desktop wallpaper is used in the login screen background?

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I'm using Ubuntu 13.04 – rainlover Jun 14 '13 at 12:22
A 2 MB PNG image isn't a very heavy load for a modern computer. If I were trying to optimize startup, I'd look elsewhere, such as eliminating unnecessary services. The fade-in for this image is going to be a fixed delay anyway. – hexafraction Jun 14 '13 at 12:40
up vote 1 down vote accepted

This file's full path is /usr/share/backgrounds/warty-final-ubuntu.png. It is part of ubuntu-wallpapers package. I don't recommend uninstalling that package because you'll end up with unmet dependencies problems, but you could just remove the file:

sudo rm /usr/share/backgrounds/warty-final-ubuntu.png

or replace it with your black background:

sudo wget -O /usr/share/backgrounds/warty-final-ubuntu.png

Keep in mind that if ubuntu-wallpapers package gets updated the original file will be restored, then you'll have replace (or remove) it again.

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Okay I removed it. Now I'll see what will happen when computer comes to login screen after boot. – rainlover Jun 14 '13 at 14:26
Thank you very much. I got rid of what I wanted to. Ha Ha. – rainlover Jun 15 '13 at 1:41

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