Bluetooth

Since the update from bluez to 4.40 bluetooth configuration has changed a lot and is now even worse - but not broken as you can read in some threads.
This page will explain how to do it the right way (and expects you have bluez >= 4.40-2)
You have to adjust your bluetooth device in all examples if it is not !hci0 (get the name with hcitool dev).

1) Get the bluetooth address of your remote device

Make sure your remote device is recoverable and run:

Example:

Bluetooth address here is 00:07:61:A7:56:4B

2) Pair with your remote device

You have to enter the correct pin here and remember the path thats printed.

Example:

Path here is /org/bluez/3070/!hci0/dev_00_07_61_A7_56_4B

To remove a pairing just run the following command:

If your device is already paired you get the device path with the following command:

3) Make the remote device trusted

Example:

The command above should return nothing, you can check the status with the following command:

1 means true, 0 false.

4) Connect the remote device

This is different for every device family, the following command connects an input device (eg mouse):

For a audio device the command would be:

but test-audio is needed to pair correctly which is not available in Debian right now (June 09).


Example:

Now your device should work.

Summery

After a reboot your device should work automatically or you just have to run step 4) above.
Things will get easier as soon as frontends and GUIs are ready to use this new API, till then its a bit console hacking ;)
Good information (API, scripts) can be found here: /usr/share/doc/bluez/

Please edit this article if you managed to get another device family working then input devices (or if you found an error of course ;-) )
/hathe