I messed up permissions and no user wallpaper on login screen

Asked by kenn

Hi,
I am on Ubuntu 14.04.03 32 bit platform.
The day before while installing udev from source it messed up permissions in my system. I fixed some of the permissions and I managed to login. I noticed that user wallpaper is not set in login screen. I reinstalled lightdm and lightdm-gtk-greeter but it doesn't work. in ` /etc/lightdm/lightdm-gtk-greeter.conf` if I set `background=` path manually it shows wallpaper but when I change user wallpaper it doesn't sync walpaper in login screen.

How can I fix it?

Regards.
Kenn.

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LightDM GTK Greeter Edit question
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Launchpad Janitor (janitor) said :
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This question was expired because it remained in the 'Open' state without activity for the last 15 days.