When I change the Spotify volume, the sound indicator (on the panel) stops working and doesn’t change the system volume when I slide the indicator or click to open ‘sound settings’. I’m on 16.04.3.
PS: When I kill the process indicator-sound-service it works again, but as soon as I change the volume on Spotify again it crashes.
I have the same problem too - it seems that however Spotify is "integrating" with the indicator just causes it to crash.
Spotfy for Linux is actually unmaintained, so it may be a very long time till it gets fixed:
In particular:
Spotify’s rep also says the company do ‘want to fix’ some minor issues, like incorrect MPRIS data being passed to sound applets in GNOME, Unity, Cinnamon, etc, but when this may happen is as-yet unknown.
Thank you for the response… Guess we’ll just have to wait for a fix