I haven't used my diNovo much lately, but the question I get the most (besides the one about the LCD-display on the Mediapad) is about authentication and encryption.

Since I haven't configured it myself, these are the notes I got from Benjamin Eikel (gmane), (based on the ones from Janis Münch):

1. Enable authentication and encryption in /etc/bluetooth/hcid.conf
   
   
   device {
      auth enable;
      encrypt enable;
   }
   
   
   
2. Restart the Bluetooth subsystem
   
   
   /etc/init.d/bluetooth restart
   
   
   
3. Initiate authentication
   
   Hit a button on the keyboard to make it try to connect, then enter your PIN on the keyboard.
   
   
4. Complete the handshake
   
   Either use a script as pin_helper that echoes a static PIN and remote the computer via SSH or connect a second (cabled ;) keyboard to enter the pin in your pin_helper of choice.
   
   
5. Repeat procedure with Mediapad
   
   
6. Repeat procedure with mouse
   
   For PIN, use 0000 on the computer.
   
   If it doesn't work the first time, press the "Connect"-button under the mouse and issue "hidd --connect <bdaddr of mouse>" from the computer.

Also, if the keyboard/mouse is used with another device, you have to "hidd --connect <bdaddr>" to regain the connection.