[Bug 1795145] Re: Turn on background plugin by default (Ubuntu 18.10)

[Jeremy Bicha]

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** Changed in: ubuntu-settings (Ubuntu)
       Status: Confirmed => Fix Committed

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https://bugs.launchpad.net/bugs/1795145

Title:
  Turn on background plugin by default (Ubuntu 18.10)

Status in ubuntu-settings package in Ubuntu:
  Fix Committed

Bug description:
  In https://git.launchpad.net/~ubuntu-desktop/ubuntu/+source/ubuntu-
  settings/tree/debian/ubuntu-settings.gsettings-override#n139

  we have,

  [org.gnome.settings-daemon.plugins.background:ubuntu]
  active = false

  which disables the plugin. Gnome-settings-daemon doesn't use that key
  anymore (They are auto started by desktop files), But unity-settings-
  daemon now requires it to be enabled by default due to recent changes
  in lightdm and u-s-d

  Lightdm now use AccountsService extension system for extended greeter
  information (like wallpaper) used by unity-greeter
  (https://github.com/CanonicalLtd/lightdm/commit/6015bce25f241e7580c03594d846769f8236232f)

  And unity-settings-daemon now depends on new AccountsService method of
  setting background file for unity greeter.
  (https://bazaar.launchpad.net/~unity-settings-daemon-team/unity-
  settings-daemon/trunk/revision/4179)

  How-to-reproduce:
  ------------------

  1) First disable the background plugin if it is already enabled.

      gsettings set org.gnome.settings-daemon.plugins.sharing active
  false

  2) Change the wallpaper from unity-control-center.

  3) Log out. 
   
      Unity-greeter should reflect the change of wallpaper.
      
      But it doesn't.

  4) Re-enable the background plugin.

      gsettings set org.gnome.settings-daemon.plugins.sharing active
  true

  5) Change the wallpaper again and then log out.

      Unity-greeter now reflects the change in wallpaper properly.

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