Comment 1 for bug 539797

This bug is related to (but not a duplicate of) bug #538757 and bug #538761 . Ubuntu's modifications to upstream components have resulted in the volume change sounds not being triggered. (The one place that still does, at the moment, is the Sound Preferences dialog).

The other side to the issue, which this bug report conveniently fills, is that Ubuntu's sound theme is dated and doesn't contain sounds like "audio-volume-change". The FreeDesktop sound theme has that and more -- it could be all right to have Ubuntu's sound theme inherit from that, if space permits.

Desktop sound theme specification (with a list of standard sound names within): http://www.freedesktop.org/wiki/Specifications/sound-theme-spec

Freedesktop sound theme:
http://cgit.freedesktop.org/sound-theme-freedesktop/