I installed the KDE plasma desktop yesterday on my Ubuntu 14.04 system. The environment has been working quite well up until now.
However, I just noticed that there was no Sound notification icon in the panel.
Although the sound seems to be working, it's very faint. Even after adjusting the volume from System Settings->Notifications->Player Settings and increasing it to 100% the sound remains faint.
How do I restore the notification area sound indicator and fix the volume problem?
P.S. This problem is only on the KDE environment. Sound is working just fine on GNOME.