Bluetooth functionality was broken after upgrading my old Dell Inspiron 8600 to Ubuntu 11.04. The Bluetooth icon was greyed out and I could not get the service running. After Googling around a bit, I saw this:
sudo killall bluetoothdThat worked. But I had to type this in manually every time I rebooted. Google found a better suggestion. Edit the rc.local file:
sudo bluetoothd
sudo vim /etc/rc.localby adding the following line before "exit 0":
sudo service bluetooth restartMake it executable:
sudo chmod 755 /etc/rc.localTested with a restart and the Bluetooth mouse came back online with no fuss :-). Great!