Did some investigations. It seems that the bug with FN keys is kernel bug. Here is related bug on kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=9147
It is strange, but I faced out with this bug only after several weeks using ubuntu 12.04. Btw, this bug is present in ubuntu 13.10 too.
Did some investigations. It seems that the bug with FN keys is kernel bug. Here is related bug on kernel.org https:/ /bugzilla. kernel. org/show_ bug.cgi? id=9147
It is strange, but I faced out with this bug only after several weeks using ubuntu 12.04. Btw, this bug is present in ubuntu 13.10 too.