I'm running xubuntu 12.10 (xfce 4.10) (on a lenovo thinkpad X121e) and the function (fn) + volume control do not change the actual output volume. they do something and a volume change is displayed, but It seems to be changing the "HDMI / DisplayPort" (digital stereo, whatever that means...?) but all music seems to be output to "analogue stereo" (whatever that means...?). So what probably want is to remap fn+f1/f2 (the volume control keys) to the audio output (but any other ideas are very welcome too).
how on earth do I do that?
Several users seem to be facing a similar problem, but I have so far not found a sufficient solution, since they all seem to be referring to gnome and most of them address something like "system settings -> sound preferences" which doesn't exist in (my) xfce.
the closest answer I could find I think could be this: No volume control in Nexuiz fullscreen mode does that mean I need to enable or install or whatever acpid and if yes, where and under what name do I save that script? nowhere can I find any such lines. help very welcome, thanks.