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Thread: Unity greeter wallpaper

  1. #1
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    Unity greeter wallpaper

    Hello I was wondering if i could get some help with unity greeter. From what i know you should be able to have your own unique wallpaper for the login. So far i have only changed my desktop wallpaper, i thought that would do the trick. So how do i do it? Still a newbie.....

  2. #2
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    Re: Unity greeter wallpaper

    Hi linforlife.

    Check this article. It is for 11.10, but it should work on 12.04 too (both use lightdm).

    Hope that helps, and tell us how it goes.
    Regards.

  3. #3
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    Re: Unity greeter wallpaper

    If you're using 12.04 it should display desktop wallpaper at the log-in. Is the image stored somewhere other than in your 'pictures' folder?

  4. #4
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    Re: Unity greeter wallpaper

    Quote Originally Posted by papibe View Post
    Hi linforlife.

    Check this article. It is for 11.10, but it should work on 12.04 too (both use lightdm).

    Hope that helps, and tell us how it goes.
    Regards.
    Hello I read the article and it didnt help. When I type in the command I get the text editor blank with nothing.

  5. #5
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    Re: Unity greeter wallpaper

    Quote Originally Posted by Hylas de Niall View Post
    If you're using 12.04 it should display desktop wallpaper at the log-in. Is the image stored somewhere other than in your 'pictures' folder?
    my picture is store as follows home/pictures/wallpaper/one.jpg

  6. #6
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    Re: Unity greeter wallpaper

    Quote Originally Posted by linforlife View Post
    my picture is store as follows home/pictures/wallpaper/one.jpg
    You could try using one from directly in the pictures folder and see if that works?

  7. #7
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    Re: Unity greeter wallpaper

    Quote Originally Posted by linforlife View Post
    my picture is store as follows home/pictures/wallpaper/one.jpg
    Hi, I have been having this problem as well, and I think I figured out what they problem is and how to fix it. I bet you chose to encrypt your home folder didn't you? That is what I did, and I read that LightDM login screen can't access any picture from home/pictures before you log-in because it is still encrypted! After reading this I poked around a bit. I noticed that using the default wallpapers (the ones you see if you chose "Wallpapers" from the "Change Desktop Background" right-click dialog) meant that they would show up on the log-in screen. This is because those default wallpapers are stored in /usr/share/backgrounds/ and aren't encrypted. So that solves the problem why your home pictures folder backgrounds won't show on the log-in screen. Now the fix.

    To fix this we need to put any picture that we want to be able to appear as a login background somewhere outside of the home folder (encrypted, remember). I put them in /usr/share/backgrounds along with the default ones. Your changed background should now be on the login screen as well.

    If you look in /usr/share/gnome-background-properties you will see a file called 'precise-wallpapers.xml'. What I did is backup this file first ("sudo cp precise-wallpaper.xml /usr/share/gnome-background-properties/precise-wallpaper-backup.xml") and then "sudo nano precise-wallpaper.xml" to edit it. The file is a simple XML format that points to where backgrounds are stored. Copying the format you could add something like the following (before the </wallpapers> closing tag):

    Code:
     <wallpaper>
        <name>Beach 4</name>
        <filename>/usr/share/backgrounds/beach4.jpg</filename>
        <options>zoom</options>
        <pcolor>#000000</pcolor>
        <scolor>#000000</scolor>
        <shade_type>solid</shade_type>
      </wallpaper>
    I added five new ones. The point of doing this is that now when you right-click on the desktop and choose "Change Desktop Background" and "Wallpapers" is selected from the dropdown, you will see the new wallpapers you just added. Alternatively, you could simply just keep copying your home/pictures background to usr/share/backgrounds

    Take care

  8. #8
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    Re: Unity greeter wallpaper

    This worked for me too.
    Last edited by deadprotocol; June 2nd, 2012 at 04:22 AM.

  9. #9
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    Re: Unity greeter wallpaper

    For me,the separate wallpaper for login window just flashes and then again displays the desktop wallpaper at login.
    I changed the login background after installing ubuntu tweak and selecting one of the default wallpapers(different from desktop wallpaper) for login window.
    The new wallpaper for login works,but it just flashes for a second at login window and then switches to desktop wallpaper.
    Any ideas how to resolve it?
    Last edited by satish_j; June 2nd, 2012 at 06:13 AM.

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  10. #10
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    Re: Unity greeter wallpaper

    Quote Originally Posted by satish_j View Post
    For me,the separate wallpaper for login window just flashes and then again displays the desktop wallpaper at login.
    I changed the login background after installing ubuntu tweak and selecting one of the default wallpapers(different from desktop wallpaper) for login window.
    The new wallpaper for login works,but it just flashes for a second at login window and then switches to desktop wallpaper.
    Any ideas how to resolve it?
    Hmm, not sure about the whole separate login/desktop wallpapers (having 2 different ones). You could try modifying (at your own peril of course) the default value for the login background. Try modifying the values in /etc/lightdm/unity-greeter.conf :

    Code:
    [greeter]
    background=/usr/share/backgrounds/warty-final-ubuntu.png
    logo=/usr/share/unity-greeter/logo.png
    theme-name=Ambiance
    icon-theme-name=ubuntu-mono-dark
    font-name=Ubuntu 11
    xft-antialias=true
    xft-dpi=96
    xft-hintstyle=hintslight
    xft-rgba=rgb
    Just replace background property with the path to the background you want to display. In order to get your desktop background not to overrule the default value in unity-greeter.conf, you will want to have your desktop background stored somewhere where lightdm can't access before login (there may be a simpler solution...anyone?). For me, because lightdm login can't access my home folder before login (encrypted), I could just set my desktop background from my ~/Pictures folder, and the login will always use the default image (warty-final-ubuntu.png from unity-greeter.conf, unless you replace that line). There could be a simpler way, but that should work for you, if you have an encrypted home folder, anyway.
    "Basically what Ubuntu says is that we don’t make sense alone as human beings...we are only fully human and only fully able to live, to flourish, to function, all of those things, in a community. I am what I am because we are."

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