Not work bluetooth

I have Dell Inspiron N5050-0194 with Ubuntu 10.10 pre-installed by the manufacturer.
Now I tried to install Ubuntu 12.04 LTS 64-bit from http://www.ubuntu.com/certification/hardware/201105-8079/ after formating my hard-drive.
But I can not set up bluetooth (mouse Dell Pu705 and others). While Wi-Fi is working correctly.
In Ubuntu 10.10 all were normally.
Need help.