I recently got myself a nice HP NC2400 Subnotebook. I installed The KDE-CE on it just for checking out KDE (usually I prefer XFCE). And it worked mostly flawless. The neat touch-sensitive controls for volume and WIFI worked. But as I was fed up with KDE for several reasons (I rather like it slick and fast than flashy and luxurious) and wanted to switch back to XFCE, those controls didn't work anymore at all. Neither in live-CD-mode, nor after the installation. But as I installed KDE-CE again and got XFCE over APT, they worked again, but now I didn't had the neat preconf with wich XFCE-CE comes usually.
So the problem is: why do the controls work in KDE-CE, and not in XFCE-CE? And how can I get them to work in the latter as well?