I am using a Dell Optiplex 9020 SFF. I installed a CSR 4.0 Bluetooth adapter for PC. It's working just fine under Windows 7. After installing Ubuntu 16.10, the Bluetooth device is connecting, and playing audio as usual from any device, but I can neither receive a file from any device nor send a file from my PC.
I've already run
rfkill list, which shows no blockage at all, and the Bluetooth application is correctly installed. Now what should I do in order to send or receive files? There is no driver for Ubuntu in the adapter's installation CD.