If your Logitech bluetooth keyboard/mouse is not working in graphical interface then there is a simple way to fix this.

     gksudo gedit /lib/udev/rules.d/62-bluezhid2hci.rules

 

then change :

 

# Logitech devices
KERNEL=="hiddev*"

 

 

to:

 

# Logitech devices
KERNEL=="hidraw*"

 

 

after that restart PC and your logitech devises will work perfectly.