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I use pcmanfm to display wallpapers on my desktop. The location of the conf file for pcmanfm is ~/.config/pcmanfm/lubuntu. In this file the wallpaper is simply set in this form:

wallpaper=/PATH/TO/IMAGE/FILE/image.jpg

How would I go about getting that information to the configuration file of the lightdm greeter? /etc/xdg/lubuntu/lightdm/lightdm-gtk-greeter.conf

The background in the configuration file of the greeter is set like this:

background=/PATH/TO/IMAGE/FILE/image.jpg

Is there any way that I could link it, or something else with the desired result?

zaruvi
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  • Does this help? http://askubuntu.com/questions/142766/changing-wallpaper-on-12-04-login-screen/142771#142771 – Mitch Aug 29 '14 at 16:11
  • I'm afraid not, since I use pcmanfm for my desktop wallpaper. As noted above it will only change that one line in the pcmanfm.conf file. It will have no impact on the login screen. – zaruvi Aug 29 '14 at 16:19

1 Answers1

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LightDM use AccountsService to get user's wallpaper.

I do not use pcmanfm, but at first look it seems that pcmanfm do not interact with AccountsService to update information about wallpaper.

There are 2 options:

  1. Wait for needed pcmanfm functionality (or just search for related bugs - maybe it's already reported but not implemented).

  2. You can edit "/var/lib/AccountsService/users/$USER" file. Add following line to change your wallpaper at login screen for specified user:

    background=path/to/image
user297453
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  • Yes, pcmanfm does not interact with AccountsService as far as I know. I must admit I'm not too familiar with the workings of AccountsService (much less lightdm's or pcmanfm's interaction with it), but if I understand correctly using it just moves the problem. My intention is to have the background path automatically change as the background changes through pcmanfm. Whether I use the lightdm-gtk-greeter configuration file or the AccountsService you mentioned doesn't matter too much, both would probably work. The question still remains, is there a way to accomplish any one of these scenarios? – zaruvi Aug 30 '14 at 14:34
  • Another workaround (workaround, it is not the solution) - using some script to update AccountsService file each time pcmanfm configuration changed. http://superuser.com/questions/181517/how-to-execute-a-command-whenever-a-file-changes

    Or you can use script that run desktop settings app and update wallpaper after it terminates.

     – user297453 Aug 30 '14 at 14:47
  • Hey, I guess I'll accept your answer for option 1. I will have to write a script for it myself that I'll run at startup or something. – zaruvi Aug 30 '14 at 21:43