Been running Ubuntu 17.10 since beta 2. Suddenly today, every time firefox closes an audio stream, the application volume in Pulse is set to zero. This happens, for example, when switching from one youtube video to another.
I've tried many things. Here's what I remember:
- checked no such problem in chrome or other audio applications
- setting firefox's media:default_volume
- verified pulse's flat_volumes is no
rm -rf .config/pulse; pulseaudio -k
- firefox "safe mode"
- firefox reset