Maybe, it works but I don't test it. For "Unable to find a source package for xserver-xorg-input-synaptics" problem, you have to add a source repository.
Take a look at "https://help.ubuntu.com/community/Repositories/Ubuntu" for adding source. Open ubuntu software center or synaptic and modify the sources.list. OR just type this command : gksudo software-properties-gtk.
Maybe, it works but I don't test it. For "Unable to find a source package for xserver- xorg-input- synaptics" problem, you have to add a source repository.
Take a look at "https:/ /help.ubuntu. com/community/ Repositories/ Ubuntu" for adding source. Open ubuntu software center or synaptic and modify the sources.list. OR just type this command : gksudo software- properties- gtk.