I noticed that the volume control when I use xubuntu is not really working properly.
I can see, that xubuntu is recognizing that it should do something and displays a small image indicating volume up/down or mute. But, it is not affecting the sound I hear for instance while using youtube.
When I open my PulseAudio I see in Output Devices Tab two devices: Built in Audio Digital Stereo and Built-in Analog Stereo. The indication for sound volume for the first device actually does react when I press the media keys for volume up/down. But this should be the second device that should be controlled by my media keys. So the question is, how do I change the device controlled by media keys?
Also, I noticed, that under Ubuntu the media keys work fine, and it is possible to control volume with them..