Comment 12 for bug 1478075

Per spec, if an app/game is playing sounds but not music, that is the "alert" output role. As long as an alarm is not sounding, a phone call is not in progress, and you're not playing music some other way, all volume controls should adjust the volume of that app's sounds. <https://wiki.ubuntu.com/Sound#primary-output>

In other words, if apps "obey the media volume setting" for things that aren't music/video, that's probably a bug.

I just realized that when I added output roles to the spec, I updated the design for the System Settings slider and the volume buttons, but I neglected to update the design for the indicator slider to match. Spec updated. <https://wiki.ubuntu.com/Sound?action=diff&rev2=148&rev1=147> But that doesn't seem to be related to this bug report, and I still have no reason to think that this bug report is valid.