This bug was fixed in the package gnome-control-center - 1:3.4.2-0ubuntu0.13.2
--------------- gnome-control-center (1:3.4.2-0ubuntu0.13.2) precise; urgency=medium
* Disable the input/output bar when no input/output devices (LP: #1291862) -- Bin Li <email address hidden> Wed, 02 Apr 2014 10:52:39 +0200
This bug was fixed in the package gnome-control- center - 1:3.4.2- 0ubuntu0. 13.2
--------------- center (1:3.4. 2-0ubuntu0. 13.2) precise; urgency=medium
gnome-control-
* Disable the input/output bar when no input/output devices (LP: #1291862)
-- Bin Li <email address hidden> Wed, 02 Apr 2014 10:52:39 +0200