I use blueman and bluez, sometimes no sound, sometimes the headset is sizzle...
Can anybody help me?
The computer may not be choosing the right hardware to play.
Open the Sound settings (open your Dash and type sound). Go to the Output tab. You should see more than one option.
Click the one that references your Bluetooth headphones. (You may have to double-click it.) Adjust the sounds as required. You can also use the Test Sound button.