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Ubuntu 16.04. After upgrade I restarted and my locked to launcher icons disapperead. Now every time I restart I have a clean launcher with standard icons. If I try to open applications and lock to launcher them, after restart they will disappear. Any help?

  • update. It seems all the settings are not recorded. As an example I set "natural scrolling" in All settings -> mouse and touchpad settings. but the settings it is not recorded. :-(. any help? –  Aug 09 '16 at 18:29

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Problem solved! The issue origin was because some days ago I installed gnome glib-2.0 for c development purpose. I don't know why only after the update the problem arose. To discover the problem: from command line after doing:

$ unity-control-center

I can see the error:

GLib-Gio-Message: Using the 'memory' GSettings backend.  Your settings will not be saved or shared with other applications.

The problem is that in the search path the installed glib (under usr/local) is searched before the library referenced by unity.

To solve the problem I ran sudo make uninstall from the directory where I downloaded gnome glib. After reboot every icon and setting was restored automatically.

Eventually it would be possible to change the search path of dynamic libraries defined in /etc/ld.so.conf.d/.

See also My dconf/gsettings installation is broken. How can I fix it without Ubuntu reinstall?