Are you using gnome or Kde as your desktop Gui if gnome
run the following from terminal
Reset Icon Pack
Code:
gsettings set org.gnome.desktop.interface icon-theme ''
Reset Theme
Code:
gsettings set org.gnome.desktop.interface gtk-theme ''
gsettings set org.gnome.desktop.wm.preferences theme ''
gconftool-2 --set --type string /apps/metacity/general/theme ''
Reset Launcher
Code:
gsettings reset com.canonical.Unity.Launcher favorites
Reset Panel
Code:
gsettings set com.canonical.Unity.Panel systray-whitelist "['all']"
Hope it works.
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