After very painful update to 16.04 I have a problem with wireless headset Sony DR-BTN200. It doesn't produce any sound, and the media freezes.
For example, I open some video on youtube. It plays on laptop's speakers, I can hear the sound. Once I connect headset, the sound stops and video just pauses (however, pause button of youtube player is not pressed). The same thing is when I try to play some mp3 or watch any movie. The only exception is Spotify - it shows visually that track is playing, but there's no sound and also Spotify displays a notification that track cannot be played.
Once I disconnect headset, the video or audio continues playing from the place it paused. If I try to first connect headset and then open a video, it doesn't start (but is loading), and starts right after I disconnect headset.
I tried to press buttons on my headset. I can tell that youtube reacts on play button - it shows buttons, just like if I moved the mouse or pressed any button. But there's no any reaction, video still stays paused.
Headphones are connected as headset, profile is Hihg fidelity playback (A2DP sink). The problem appeared right after update to 16.04, it worked perfectly with 14.10.