> The main volume control (e.g. the applet in the system tray or the buttons > on your keyboard/laptop) will control whatever device is marked as "default" > or "fallback". If you tweak this, it will work with the appropriate device. I'm not sure what you mean by "fallback device". Can you set that on the Output tab in gnome-sound-properties? All I know is, changing my Output device from "Internal Audio" to "USB Audio" means volume control has no effect anymore. Sorry to sound so clueless.