I've recently reinstalled Ubuntu 16.04.3 LTS on my system. I usually use a Bluetooth headset with a microphone. It worked perfectly before I reinstalled, but now when I go into the sound settings and select my headphones:
It still plays sound through the speakers as if I never selected the headphones.
Solutions that didn't Work
- Selecting the sound card through PulseAudio Volume Control
- Selecting the sound card through Alsamixer
- Reducing the Master volume and increasing the Headphone volume in Alsamixer